(2104) REMOVING TRAFFIC CONTROL SIGNAL SYSTEMS · Web view2021. 7. 20. · This Work consists of removing and salvaging, or disposing of miscellaneous structures, equipment and

SP XXXX-XXInsert Date

DIVISION SS

DELETE WHEN DONE: Statements in red are guidelines or instructional for the designer and special provisions writer and not part of the contract. Remove the red instructions before completion of the special provision for the project. Red instruction is referencing the specification language directly after.

All Red text must be removed from the special provisions prior to the special provisions being submitted for project letting.

I hereby certify that the Special Provisions for traffic control signal construction (Division SS) contained in this proposal were prepared by me or under my direct supervision and that I am a duly licensed Professional Engineer under the laws of the State of Minnesota.

________________________________________Engineer Name

Lic. No XXXXX Date MM/DD/YYYY

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Table of ContentsSS-1 (2104) REMOVING TRAFFIC CONTROL SIGNAL SYSTEMS 3

SS-1.1 DESCRIPTION 3

SS-1.2 MATERIALS 4

SS-1.3 CONSTRUCITON REQUIREMENTS 4

A Salvage Traffic Control Signal Cabinet and Equipment 4

B Salvage Battery Backup Service (SSB) Cabinet and Equipment 4

C Salvage Non-Intrusive Detection Equipment 5

D Removal Operations 5

SS-1.4 METHOD OF MEASUREMENT 7

A Removing Traffic Control Signal System 7

SS-1.5 BASIS OF PAYMENT 7

A Traffic Control Signal System 7

B Haul Salvaged Material 7

SS-2 (2565) TRAFFIC CONTROL SIGNALS 7


SS-2.2 MATERIALS 8

A Department Provided Materials 8

B PA Traffic Signal Mast Arm and Transformer Base Bolting Hardware 9

C Contractor Provided Equipment for Traffic Control Signal Cabinets 9

D Buy America 9

E Low Profile Hydraulic Torque Wrench 10

F Signal Head Pedestal Pole Foundations 10

G Signal Head Pedestal Pole 11

H Backplates 11

I CCTV Pole Cabinet 11

J SSB Cabinet Circuit Breaker Addition 11

K Painting Traffic Control Signal Pedestals, Shafts & Poles and Mast Arms 12

L Cluster Head Adaptor 12

M Bi Modal Green and Yellow Arrow Signal Indications 12

N Accessible Pedestrian Signals (APS) 12

O Signal Service Cabinet, Type SSB (with Battery Back-up Equipment) 19

P Signal Service Cabinet, Type SSB (without Battery Back-up Equipment) 19

Q Advance Warning Flashers (AWF) 19

SS-2.3 CONSTRUCTION REQUIREMENTS 20

A Storing Materials 20

B Splicing Conductors 20

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C Installation of Department Provided Materials 20

D Pick Up Department Provided Materials 20

E Video Detection and Video Monitoring 21

F CCTV Pole Cabinet Installation 22

G Signal Head Pedestal Pole Installation 22

H Maintenance of Existing Electrical Systems 22

I Traffic Signal Mast Arm Pole Installation 26

J Traffic Signal Mast Arm Pole Anchor Rod Tightening 26

K Single Nut Connection Anchor Rod Tightening 29

L Wiring for Future Emergency Vehicle Preemption 30

M Compliance with NEC Article 110. 24 30

N Sign Panel Warning Stickers 32

SS-2.4 AS BUILT DRAWINGS BASIS OF PAYMENT 32

A As Built Drawings and GPS Coordinates 32

SS-3 (2565) EMERGENCY VEHICLE PREEMPTION (EVP) SYSTEMS 32


SS-3.2 MATERIALS 32

A Contractor Provided Equipment 32


A EVP Equipment 33

SS-4 (2565) TRAFFIC CONTROL INTERCONNECT 33


SS-4.2 MATERIALS 33

A Department Provided Equipment 33

B Interconnect Cable 34


A Interconnect Cable Installation 34

SS-1 (2104) REMOVING TRAFFIC CONTROL SIGNAL SYSTEMS

SS-1.1 DESCRIPTION

Use the following language if one existing traffic control signal system will be removed on the project.


This Work consists of removing and salvaging, or disposing of miscellaneous structures, equipment and materials in accordance with 2104, “Removing Pavement and Miscellaneous Structures” and as shown on the Plans, from the existing traffic control signal system at the intersection of ______ (______) and ______ in ________, _______ County and backfilling trenches, holes and depressions.

Use the following language if two or more existing traffic control signal systems will be removed on the project. Fill in the blank the number of existing traffic control signal systems to be removed on the project

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This Work consists of backfilling trenches, holes, depressions, and removing and salvaging, or disposing of miscellaneous structures, equipment and materials as shown on the Plans, from _____ existing traffic control signal systems as follows:

SYSTEM "A" - at the intersection of ______ (______) and ______ in ________, _______ County,

and

SYSTEM "B" - at the intersection of ______ (______) and ______ in ________, _______ County,

SS-1.2 MATERIALS

Use materials in accordance with 2104, “Removing Miscellaneous Structures” and these Special Provisions.

SS-1.3 CONSTRUCITON REQUIREMENTS

A Salvage Traffic Control Signal Cabinet and Equipment

To ensure proper care and prevent damage during removal, handling and shipping of control signal cabinets and equipment, provide in order the following:

(1) De-energize the traffic control cabinet and equipment (2) Disconnect the power conductors (3) Unplug and remove removable control equipment including the controller unit, detector

amplifier units, conflict monitor, and load switches from the cabinet (4) Package and secure the removed control equipment in a method and manner that

prevents damage to the equipment during handling and shipping(5) Coil together the connecting harnesses of the removed equipment (6) Fasten and secure the harnesses to a cabinet shelf in a method and manner that

prevents the harnesses from being damaged when closing the cabinet door and from falling through the bottom of the cabinet during removal, handling, and shipping

(7) Secure the cabinet in an upright position when removing, handling, and shipping(8) Return the salvaged traffic control signal cabinet to MnDOT’s Electrical Services Section.

6000 Minnehaha Ave, St Paul Minnesota, 55111-4059 (9) Ensure the Department issues a comprehensive receipt for items salvaged.

Change the address above if you want the salvaged materials delivered to some place other than ESS change the note above.


B Salvage Battery Backup Service (SSB) Cabinet and Equipment

To ensure proper care and prevent damage during removal, handling, and shipping of SSB cabinets and equipment, provide in order the following:

(1) De-energize the SSB cabinet and equipment (2) Disconnect the power conductors (3) Remove the batteries and uninterrupted power supply (UPS) from the cabinet(4) Package and secure the removed batteries and UPS in method and manner that

prevents damage to the equipment during handling and shipping (5) Coil together the harnesses (6) Fasten and secure the harnesses to a cabinet shelf in a method and manner that

prevents the harnesses from being damaged

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(7) Secure the cabinet in an upright position when removing, handling, and shipping(8) Return the salvaged SSB cabinet to MnDOT’s Electrical Services Section. 6000

Minnehaha Ave, St Paul Minnesota, 55111-4059(9) Ensure the Department issues a comprehensive receipt for items salvaged.

C Salvage Non-Intrusive Detection Equipment

To ensure proper care and prevent damage during removal, handling, and shipping of Non-Intrusive detection equipment, provide in order the following:

(1) De-energize the equipment (2) Remove the power and interface conductors(3) Package the equipment to prevent damage during shipment.

D Removal Operations

Remove in place Materials as specified on the Plans.

Remove in-place conduit systems, cables and conductors as shown on the Plans except under roadway surfaces and within two feet of the Roadbed.

Except under roadway surfaces and within two feet of the Roadbed, remove in-place conduit systems, cables, and conductors no longer in service that are not shown on the Plans for removal. This Work will be paid for as Extra Work in accordance with 1402.5 “Extra Work”.

Do not Abandon the in-place conduit systems, cables and conductors unless it has been determined by the Engineer, ESS, and the district traffic office that removal operations would have a direct negative impact on a structure, facility, or vegetation listed in 2572.3A “Protecting and Preserving”.

Backfill trenches, holes, and depressions caused by removal operations in accordance with 2104.3E “Backfilling Depressions”.

Destroy removed structures not containing lead by rendering them unusable to the satisfaction of the Engineer before disposing.

Dispose of Materials in accordance with 2104.3D “Disposal of Materials and Debris”.

Submit to the Engineer a receipt from the facility where Materials were delivered and disposed of or recycled.

The Office of Environmental Stewardship sets the policy and procedures for regulated materials management.

Follow the links below to obtain the current work order form and the list of approved waste contractors.

http://www.dot.state.mn.us/environment/regulatedmaterials/wastemgmt.html

Hazardous Waste Work Order Form (Word)

MnDOT approved list of waste contractors (Word)

Include the following section when materials being removed have peeling or flaking lead based paint. It is the district traffic office’s responsibility to know if the peeling or flaking paint is lead based before including this section in the Special Provision. This is to ensure contractors bid this work accordingly for the project.

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https://edocs-public.dot.state.mn.us/edocs_public/DMResultSet/download?docId=1437927

http://www.dot.state.mn.us/environment/regulatedmaterials/pdf/ho-wo-form.docx



BEFORE INCLUDING THE FOLLOWING SECTION, first determine if the materials being removed on the project have peeling or flaking paint. If unsure the peeling or flaking paint is lead based then contact OES (Environmental Modeling and Testing Unit, Fort Snelling) to perform testing by completing and submitting a “Work request form” found at: http://ihub/environmental-modeling/index.html


D.1 Materials with Lead Based Paint

Handle, transport, and dispose of lead-based painted Materials as follows:

(1) Read, certify understanding, and agree to abide to the requirements in OSHA 29 CFR 1926.62 and Minnesota Rules Chapter 5206, 7025, 7035, 7045 relating to the removal and disposal of lead based painted Materials as regulated waste at a MnDOT approved waste contractor. See regulated waste contractors list at:


(2) Handle, transport, and dispose of Materials with peeling or flaking lead-based paint as hazardous waste in accordance with Occupational Safety & Health Administration (OSHA) and the Minnesota Pollution Control Agency (MPCA) regulations. Peeling or flaking lead based paint chips are required to be collected onsite and disposed of by a MnDOT approved hazardous waste contractor.

(3) Submit to the Engineer a completed “Transfer of Ownership” found at:http://www.dot.state.mn.us/environment/regulatedmaterials/ownership.html

Follow the links below to obtain the current work order form and the list of approved waste contractors.


Hazardous Waste Work Order Form (Word)

MnDOT approved list of waste contractors (Word)

The form below is provided as an example. The actual form must be downloaded by the contractor. Keep the form on the next two pages in the document.


SS-1.4 METHOD OF MEASUREMENT

A Removing Traffic Control Signal System

Removing and salvaging, or disposing of miscellaneous structures, equipment and materials from the existing traffic control signal system at the intersection of __________ and ___________in ____________, ________ County, and backfilling trenches, holes, and depressions will be measured as an integral unit.

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http://www.dot.state.mn.us/environment/regulatedmaterials/pdf/ho-wo-form.docx



SS-1.5 BASIS OF PAYMENT

A Traffic Control Signal System

Removing and salvaging, or disposing of miscellaneous structures, equipment and materials from the existing traffic control signal system at the intersection of __________ and ___________in ____________, ________ County, and backfilling trenches, holes, and depressions will be paid for as specified for Item No. 2565.516 (TRAFFIC CONTROL SIGNAL SYSTEM).

Only use the following paragraph when the District is requiring materials to be salvaged from a project.


B Haul Salvaged Material

Delivery of salvaged materials to the Department at the location specified is paid for under Item No. 2104.601 (HAUL SALVAGED MATERIAL) at the contract LUMP SUM price and is considered payment in full for costs relative to hauling the materials to, and depositing the materials, at the location specified.

SS-2 (2565) TRAFFIC CONTROL SIGNALS

SS-2.1 DESCRIPTION

Use the following language if one new traffic control signal system is being constructed for the project


This Work consists of providing and installing materials and electrical equipment, and installing Department provided materials as specified, for a complete operating new hardwire interconnected coordinated full-traffic-actuated traffic control signal system at the intersection of ______ (______) and ______ in ________, _______ County, in accordance with 2565 “Traffic Control Signals,” the Plans, and the following.

Use the following language if two or more new traffic control signal systems are being constructed for the project. Fill in the blank the number of new traffic control systems for the project.


This Work consists of providing and installing materials, structures and electrical equipment; and installing Department provided materials as specified to complete ______ operating new hardwire interconnected coordinated full-traffic-actuated traffic control signal systems in accordance with the 2565 “Traffic Control Signals,” the Plans and these Special Provisions. Provide traffic control signal systems as follows.

SYSTEM "A" - at the intersection of ______ (______) and ______ in ________, _______ County

SYSTEM "B" - at the intersection of ______ (______) and ______ in ________, _______ County

SS-2.2 MATERIALS

Ensure Division S Special Provisions “As-Builts” are included in the Division S Special Provisions.This would include the pay item 2011.601.After the July 2015 Project letting date the As-Builts verbiage should automatically be included in Division S Special Provisions by MnDOT’s Project Management & Technical Support Office.Note required verbiage below in the measurement and payment section of these special provisions.


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A Department Provided Materials

The Department provides at no cost to the Contractor, the following materials and electrical equipment for the Contractor to install:

(1) One traffic control signal cabinet each complete with an actuated controller unit and signal control equipment

(2) Riser adaptor(3) Four sets of anchor rods, nuts, and washers per cabinet (one set includes one anchor,

one nut, and one washer)(4) Rubber gasket per cabinet installed between the bottom of the cabinet and the concrete

equipment pad

(The following language is to be used for required warning stickers on the backside of sign panels being installed on the signal system project. See additional verbiage under construction requirements. The Specification Writer must include the appropriate contact person and phone number to the following paragraph).


(5) Department Provided Warning Stickers on New Sign Panels

The Department provides at no cost to the Contractor, warning stickers to be applied to new sign panels. Coordinate quantity required for the project with the Engineer.

Add the section below if video or radar detection is going to be used.Include companion verbiage in the construction requirements to the following section. The video detection system should be state supplied. The detection systems are on State Contract. The traffic signal control public interest finding (PIF) covers this type of detection so State supplying it should not be a problem.

Auto Scope Vision uses 4 conductor 18 AWG microwave and sonic detector cable 3815.2 C.14Gridsmart uses an Ethernet cable with power over Ethernet. Ethernet Cable (Outside Plant) 3815.2 C.6.dIteris Vantage Next uses an Ethernet cable with power over Ethernet. Ethernet Cable (Outside Plant) 3815.2 C.6. d.Miovision uses an Ethernet cable with power over Ethernet. Ethernet Cable (Outside Plant) 3815.2 C.6. d.

The naming convention on the plan for the Cat 5e cable is as follows:1-CAT 5E XXXXXXXXXX where XXXXXXXXXX describes the purpose of the cable.

The video detection system to be installed and used at the intersection should be decided at the signal design phase so the correct cable can be called for and shown on the plan. Either Cat 5 E or 4/C 18 AWG

Use the language when appropriate based on the plan and as directed in RED text.

All RED text must be removed from the special provisions prior to the special provisions being submitted for project letting.

(6) Video detection(7) Radar detection(8) Non-Intrusive detection processors

B PA Traffic Signal Mast Arm and Transformer Base Bolting Hardware

Provide heavy hex heads bolts with nuts in accordance with Standard Plate No. 8121 and Standard Plate No. 8123, except do not provide and install lock washers.

Provide one F436 structural washer per heavy hex head bolt.

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C Contractor Provided Equipment for Traffic Control Signal Cabinets

Contractor provided equipment for traffic control cabinets when specified includes EVP phase selectors and APS central control units.

Deliver equipment for integration into the Department provided traffic control signal cabinet at least 30 Business Days in advance of needing the traffic control signal cabinet on the Project to the following address:

MnDOT Electrical Services Section (ESS)6000 Minnehaha AvenueSt. Paul, MN. 55111- 4014

To ensure integration into the correct signal cabinet, before delivery to ESS, label the equipment packaging with the following:

Assigned Traffic Engineering (TE) Number________________State Project Number_____________Contractor name_______________________Contact name and phone number_____________________

Notify ESS at least 3 Business Days in advance before delivering the equipment. Have the TE Number on hand before calling. Contact the following in the order listed until notification has been received:

Electronic Maintenance Supervisor 651-366-5759Stockroom 651-366-5720Transportation Program Supervisor 651-366-5734

D Buy America

Use domestically manufactured products that are composed predominately of steel, iron, or both for the permanent installation of MnDOT electrical systems in accordance with 23 CFR 635.410 Buy American requirements.

During the product quotation stage, inform the manufacturer that steel, and iron product must meet the Buy America requirements in accordance with 23 CFR 635.410 for either State funded or federal aid Projects. MnDOT electrical systems products required to meet Buy America include the following:

(1) Anchor Rods, Anchor Rod Templates, and Hardware(2) Stainless Steel and Steel Light Poles(3) Traffic Signal Mast Arm Poles and Bases(4) Steel Screw-in Light Foundations(5) PVC Coated RSC and Steel Fittings(6) PVC Coated Junction Boxes(7) PVC Coated Cast Steel Expansion and Deflection Fittings (23 CFR 635 Notice of

nationwide waiver of Buy America for Pig Iron)(8) Pole Mounting Adapter(9) Navigation Light Swing Arm(10) Steel Vertical Mount Tenon Adapters (11) Teflon Coated F436 Structural Washers

Exceptions to the Buy America requirements are existing materials salvaged and installed within the Project Site, and materials required for maintenance or temporary installations on the Project.

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D.1 Verifying Compliance with Buy America

For verifying compliance with Buy America requirements, obtain from the manufacturer two out of the three following documents:

(1) Mill Test Report (MTR) issued and signed by the fabricator stating that the materials subject to Buy America were melted and manufactured in the United States, written certifications from factory

(2) Written certification on company letterhead and signed by an authorized representative from manufacturers providing additional treatment to the fabricated material (blasting, coating) stating the treatment process occurred in the United States

(3) Written certification on company letterhead and signed by an authorized manufacturer representative, declaring the supplied materials subject to Buy America requirements fully meet.

Submit documentation to the Engineer.

E Low Profile Hydraulic Torque Wrench

Use an approved low profile hydraulic torque wrench listed on MnDOT’s APL for Lighting “Low profile hydraulic torque wrench” on the top nuts to tighten PA and BA traffic signal mast arm pole anchor rods to the required torque values specified in the MnDOT Anchor Rod Tightening Handbook. Use a working handheld digital pendant or, digital or analog gauge with the low-profile hydraulic torque wrench to ensure specified torque values have been met and can be verified in foot pounds by the installer and inspector during the tightening process.

If the gauge display is in pounds per square inch (PSI), convert PSI to foot pounds and ensure the calculations are correct. Submit the PSI to foot pounds converted values to the Engineer before installing the poles. The submittal and Engineer’s review does not relieve responsibility for tightening anchor rods to the required torque values.

Obtain Engineer’s approval of the wrench and provide proof of calibration done in the last 12 months from an accredited calibration service before installing the poles.

F Signal Head Pedestal Pole FoundationsFor Signal Head Pedestal Poles listed on MnDOT’s APL under Signals, furnish and install signal

head pedestal pole foundations in accordance with Light Foundation Design E Cast In-Place Standard Plate No. 8127, 2565.3F “Concrete Foundations and Equipment Pads”, and the following.

Furnish and install foundations meeting the following;

(1) One conduit(2) Conduit size as specified on the Plan(3) 10 foot ground rod electrode(4) 3 ½ inch minimum to a 3 ¾ inch maximum anchor rod projection(5) Top of foundation flush to no more than a ¼ of an inch above finish grade or

concrete sidewalk

G Signal Head Pedestal Pole

Provide a signal head pedestal pole and base listed on MnDOT’s APL for Signals instead of a Pedestal and Pedestal Base Standard Plate 8122.

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Modify the paragraph to require either non-reflectorized or reflectorized backplates. Delete either line 1 or line 2 below but not both


H Backplates

Provide backplates as required in 3834.2A.3 and as follows:

(1) Provide non-reflectorized backplates.(2) Provide reflectorized backplates

Add the text below if a junction box is needed on a signal pole to eliminate line loss issues for powering devices on the signal pole. These devices could include video cameras, radar detection, SPat messaging roadside units (RSU’s), or any eventual required ITS device. Data signal degradation may also be an issue. This cabinet can have fiber optic pigtails pulled in and terminated which eliminates any degradation issues.The SSB cabinet needs to be modified to have a 15 amp circuit breaker added to power this cabinet.The plan can have a 6 single mode fiber optic pigtail with LC connectors pulled from the signal cabinet to the CCTV pole cabinet. This allows any equipment to be installed in the cabinet without data transmission issues.There should be companion verbiage in the construction section above below. Use the language when appropriate based on the plan and as directed in RED text.


I CCTV Pole Cabinet

Provide approved CCTV Pole Cabinets list on MnDOT’s APL for Traffic management systems/ITS at the locations shown on the Plan.

Replace the stainless steel mounting hardware included with the cabinet with galvanized steel hardware in accordance with 3392 “Galvanized Hardware” of the same size and quantity.

Include the following paragraph only if the pole mounted junction box is going to require 120 VAC power. The plan must show a 3 conductor 14 AWG signal control cable being installed from the SSB cabinet to the pole having the cabinet installed.


J SSB Cabinet Circuit Breaker Addition

Provide as SSB cabinet listed on MnDOT’s APL for signals with the following addition.

(3) Single pole 15 amp circuit breaker.(4) Labeled “CCTV Pole Cabinet”

Include the paragraphs below only if the signal system is going to be painted. Add required paint color


K Painting Traffic Control Signal Pedestals, Shafts & Poles and Mast Arms

Paint metal structures and metal component parts at the factory in accordance with MnDOT 2478 and 3532.

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Provide painted signal head pedestal poles and painted pedestal bases at the locations shown on the Plans and the following:

Add paint color here.


Provide painted traffic control signal poles and mast arms at the locations shown on the Plans and the following:

Add paint color here.


The following language needs to be included if you are designing a signal system with flashing yellow arrow (FYA) with a combined thru and left turn lane. An additional application would be HAWK Pedestrian type ped crossing.


L Cluster Head Adaptor

Provide Cluster head adaptors at locations shown on the Plan.

Use MnDOT approved cluster head adaptors listed on MnDOT’s APL for Signals:

http://www.dot.state.mn.us/products/index.htmlThe following language needs to be included if you are designing a signal system with flashing yellow arrow (FYA) with a combined thru and left turn lane. The Bi modal indication is only intended to be used in this application.


M Bi Modal Green and Yellow Arrow Signal Indications

Provide green and yellow bi-modal signal indications at locations shown on the Plan.

Use MnDOT approved bi-modal signal indications listed on MnDOT’s APL for Signals:

http://www.dot.state.mn.us/products/index.html

N Accessible Pedestrian Signals (APS)

Provide Accessible Pedestrian Signals in accordance with MnDOT 3833 “Accessible Pedestrian Signal Push Buttons and Mounting Hardware” and as follows:

Present the order form in this section to the APS manufacturer to ensure the braille message is added to the pedestrian information sign and the correct voice messages are programmed in the pedestrian push buttons.

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The following order form must be filled out by the special provision’s writer before inclusion in the final set of special provisions. The order form should be left as separate pages so they can be removed.

All RED text must be removed from the special provisions prior to the Special Provisions being submitted for project letting.

Accessible Pedestrian Signal (APS)ORDER FORM

(Fill out one form per intersection)Intersection:

System I.D. ___________ T.E. No. ___________ Total Number of Pedestrian Push Buttons _____ Field Wiring Interface Board: One needed for each intersection Qty: 1

CCU (Central Control Unit): One needed for each intersection Qty: 1

Push Button and Sign Braille InformationButton Arrow Direction R/L Street Name

(Street Being Crossed)

PB2-1 PB2-1PB2-2 PB2-2PB2-3 PB2-3PB2-4 PB2-4PB4-1 PB4-1PB4-2 PB4-2PB4-3 PB4-3PB4-4 PB4-4PB6-1 PB6-1PB6-2 PB6-2PB6-3 PB6-3PB6-4 PB6-4PB8-1 PB8-1PB8-2 PB8-2PB8-3 PB8-3PB8-4 PB8-4

Custom Voice Message Details

Voice on Location and Walk Message(s) Please give phonetic pronunciation on difficult street names so that the message will be recorded correctly. *Note that unless Street, Drive, Avenue etc.…are necessary for intersection identification, it is recommended to not include them in the verbal message.

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PB2-1Wait Message: Wait to Cross at

(Street Being Crossed) (Intersecting Street)Walk Message: Walk sign

is on to cross

(Street Being Crossed) (Street Being Crossed)



is on to cross




is on to cross




is on to cross



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is on to cross




is on to cross




is on to cross




is on to cross



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is on to cross




is on to cross




is on to cross




is on to cross



Walk Interval MessagesModel message for the walk interval, applicable to most intersections.“Howard. Walk sign is on to cross Howard.”

Pushbutton Informational MessagesModel message for pushbutton intersection identification information.

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is on to cross




is on to cross




is on to cross




is on to cross



“Wait to cross Howard at Grand.”


O Signal Service Cabinet, Type SSB (with Battery Back-up Equipment)

Use this paragraph if the District wants a complete SSB cabinet with a battery backup system. The spec writer needs to use this or the other paragraph for an SSB Service cabinet.


Provide a signal service cabinet in accordance with MnDOT 3837.2A.7 and as follows:

Type SSB with battery back-up equipment that includes an inverter, batteries, bypass switch, and external strobe.

P Signal Service Cabinet, Type SSB (without Battery Back-up Equipment)

Use this paragraph if the District wants a SSB cabinet without batteries, inverter, and bypass switch. The SSB service cabinet will not have any back up capabilities. The backup system can be added later to the standard SSB cabinet that would be provided using this paragraph. The spec writer needs to use this or the other paragraph for an SSB Service cabinet.


Provide a signal service cabinet in accordance with MnDOT 3837.2A.7 except the following:

(1) Battery Backup Equipment(2) Inverter(3) Bypass Switch(4) External Strobe

Q Advance Warning Flashers (AWF)

Provide materials and equipment to complete four operating advance warning flashers (Signal Base No.'s __, __, __, and __) at the locations shown on the Plans, in accordance with the "ADVANCE WARNING FLASHER DETAILS" on the Plans and with the following:

(1) Signal Head Pedestal Poles and Base listed on MnDOT’s APL for signals.(2) Flashing Beacon Assemblies as follows:

(a) 12 inch, polycarbonate vehicle signal heads for flashing beacon assemblies in accordance with 3834.

(b) 12 inch "Yellow" signal indications in accordance with MnDOT 3834 and as follows:

(c) Affix to the back of each "yellow" flasher indication a permanent label showing the date of installation in accordance with 2565.3L.6 and to the satisfaction of the Engineer.

(d) Each flashing beacon assembly must include a cut away visor and background shield as indicated on the detail in the Plan.

(e) Attach flasher beacons as detailed in the Plans to the satisfaction of the Engineer.

(3) Flashing Beacon Assembly Bracketing

(a) Provide aluminum flashing beacon assembly bracketing with anodic coating as per MIL-A-8625C for Type II, Class I Coating.

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(4) Wiring at Each Advance Warning Flasher:(5) Provide a 4/c 14 AWG signal control cable in accordance MnDOT 3815.2 between the

terminal block or pole base connector in the pedestal base and each flashing beacon atop the advance warning flasher assembly.

(6) Advance Warning Flasher Signs:

(a) Provide and install W3-X4 (PREPARE TO STOP WHEN FLASHING) signs in accordance with 2564.

(b) Mount each sign as detailed in the Plan to the satisfaction of the Engineer.

SS-2.3 CONSTRUCTION REQUIREMENTS

A Storing Materials

Store and handle materials in accordance with 1606 “Storage of Materials”, 1607 “Handling Materials” and the manufacturer’s requirements.

B Splicing Conductors

Splicing of traffic signal control cable and other cables used in the traffic control signal system is not permitted. Install signal cables from the termination points in the signal control cabinet to the field devices with no splices in the cable.

Loop detector lead in cable may be spliced to the roadway loop wire in the adjacent handhole only.

C Installation of Department Provided Materials

Install the Department provided traffic control signal cabinet and riser adaptor complete with actuated controller unit and the required traffic control signal equipment.

Provide and install additional materials and equipment for a complete operating traffic control signal cabinet installation, including:

(1) A cabinet concrete foundation as part of the equipment pad concrete foundation using Department provided anchor rods, nuts, and washers

(2) Bonding and grounding materials and connections(3) Place a bead of 100% clear silicone between the top of the riser adaptor and the bottom

of the traffic signal control cabinet prior to assembly.(4) Terminating field conductor connections in each traffic control signal cabinet as directed

by the Engineer to make each traffic control signal system fully operational

Modify the following paragraph for the contractor to return the MnDOT pallet to a specific location.


Protect the Department provided cabinet pallet from damage and return the pallet to MnDOT Central Electrical Inventory Center or the District Headquarters.

D Pick Up Department Provided Materials

Pick up materials and equipment described at MnDOT’s Electrical Services Section, 6000 Minnehaha Avenue, St. Paul, MN. 55111- 4014. Follow these requirements:

(1) Request from MnDOT’s Electrical Services Section the materials and electrical equipment

(2) Direct the Electrical Services Section to the T.E. Request No. ______

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(3) Request Department provided materials at least 30 Business Days in advance of needing the material on the Project

(4) Notify MnDOT’s Electrical Services Section at least 3 Business Days in advance of intention to pick up materials and electrical equipment. Contact the following:


(5) Pick up the Department provided materials and electrical equipment at the specified location and transport them to the job site

(6) Secure each cabinet in an upright position when transporting to the job site. Ensure that each cabinet being transported will not tip and be damaged

Notify the Engineer in advance of contacting MnDOT’s Electrical Services Section.

Add the text below if the signal system has video detection.There should be companion verbiage in the materials section above also. Use the language when appropriate based on the plan and as directed in RED text. All RED text must be removed from the special provisions prior to the special provisions being submitted for project letting.

E Video Detection and Video Monitoring

Install traffic signal high definition video detection systems or video monitoring systems at the locations shown on the Plan and the following:

E.1 Cat5e Cable Testing

(1) Test the terminated cable to ensure network traffic performance requirements in accordance with the most current edition of the IEEE802.3ab standard.

(2) Use Ideal Networks SignalTEK NT (R156005) or MnDOT approved equal for cable testing and qualification.

(3) Repair or replace failing cable.

E.2 Video Detection Camera Installation

(1) Aim each camera for optimal field of view and detector placement at each specific approach

(2) Install continuous unspliced Cat 5 E cable, or radar detector cable(3) Zoom and focus the cameras to provide proper imaging of the approaches(4) Program video image detection zones as shown on the Plan(5) Verify with MnDOT’s district traffic office:

(a) Aim each camera for optimal field of view and detector placement at each specific approach

(b) Ensure detection zones are working correctly(c) Live video images show the detection zones properly overlaid and

operating

(6) Ensure Video detection is fully configured and operational at signal turn on.

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E.3 Video Monitoring Camera Installation

(1) Ensure the pan/tilt/zoom camera is fully operational at signal turn on.

Add the following text if a cabinet is needed on a signal pole to eliminate line loss issues for powering devices on the signal pole. These may be devices like video cameras, radar detection, SPaT messaging roadside units (RSUs), or any eventual required ITS. Data signal degradation may also be an issue. This cabinet can have fiber optic pigtails pulled in and terminated which eliminates any degradation issues.There should be companion verbiage in the Materials Section of these Special Provisions. Use the language when appropriate based on the plan and as directed in RED text.


F CCTV Pole Cabinet Installation

Install CCTV pole cabinets as shown on the Plan onto the designated pole cabinet mounting plates provided by the pole manufacturer.

Ensure the opening in the back of the cabinet aligns with the 3 inch x 5 inch access opening on the pole between the two designated pole cabinet mounts provided by the pole manufacturer. Use the gaskets included with the cabinet and install galvanized steel hardware to attach the cabinet to the designated mounting brackets welded on the pole.

G Signal Head Pedestal Pole Installation

Install signal pedestal poles on “Signal Head Pedestal Pole Foundations” included elsewhere in these Special Provisions. Ensure foundations anchor rod projections are 3 ½ inch minimum to a 3 ¾ inch maximum and the top of the foundations are installed flush to no more than a ¼ of an inch above finish grade or concrete sidewalk.

Install the pole base using the hold down washers provided with the base and in accordance with the base manufacturer’s installation instructions and the following.

Apply an approved anti-seize lubricant found on MnDOT’s APL to the upper half of anchor rods, the threads of the heavy hex nut, and the face of the heavy hex nut that turns into the ½ inch thick hold down washer.

Using a calibrated torque wrench, tighten the anchor rods in a cross- tightening pattern in three passes of 30 foot pounds, 90 foot pounds, and 150 foot pounds. After tightening anchor rods to 150 foot pounds, allow the anchor rods to relax for 10 minutes and then retighten in a cross-tightening pattern to 150 foot pounds.

The following Section should only be included in projects when the contractor is going to be required to do excavation work.


H Maintenance of Existing Electrical Systems

Maintain and keep in operation new and existing electrical systems in accordance with 2565.3B and as follows:

Locate underground facilities of existing traffic control signal systems including temporary, and newly constructed signal systems within the limits of the construction project, for the duration of the

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construction project in accordance with the applicable provisions of MnDOT 1514 and in accordance with Minnesota State Statute 216D.

Responsibility for locating underground traffic control signal system facilities is transferred from the Department to the Contractor on the Project start date as shown on the Proposal.

Request at the start of the Project for MnDOT’s locating group to provide an initial locate of the underground traffic control signal system facilities within the project limits. Submit initial locate requests to MnDOT’s Locating Office a minimum of 4 business days before the Project start date.

Locate requests that are within the construction Project limits will continue to be received by MnDOT’s Locating Office. These locate tickets will be forwarded to the Contractor’s representative responsible for coordinating locate requests within the project limits. The locate tickets will be forwarded via email or fax. Confirm receipt of the locate ticket by notifying MnDOT’s locating office within two hours of MnDOT sending the locate request.

Repair traffic control signal system facilities damaged as the result of improperly located or unmarked underground traffic control signal system facilities within the project limits.

Repair the damaged underground traffic control signal system facilities in accordance with 2545.3A, 2565.3B and RTMC design and construction requirements.

Before an authorized Work suspension begins, ensure existing, temporary, and new electrical systems are in full working order in accordance with the Contract. Maintenance and operations of electrical systems will not be suspended until the following requirements have been met:

(1) Remedy electrical Work deemed unsafe by the Engineer(2) Notify ESS, MnDOT Locating Office, and the district traffic office of Work suspension

start and stop dates(3) Schedule and provide a walk through with ESS and the district traffic office(4) Locate the underground system with paint, stakes, and flags upon request(5) Provide and install marker ball locators in handholes and underground enclosures(6) Submit to the Engineer a current As-Built redlined drawing of the electrical systems

(existing, temporary, and new)(7) Cover and clearly mark above ground splices not protected by a structure(8) Electrical components and devices are in working order

Due to the nature of electrical systems, Partial Acceptance will not be granted because of an authorized Work suspension unless the new electrical system Work has been completed and inspected in accordance with the Contract and the new system is fully operational.

During periods of authorized Work suspension, the Department will perform routine maintenance and GSOC locate requests on the Project in accordance with 1514 “Maintenance During Construction”.

When resuming Work after authorized Work suspension, remove temporary construction or Materials that the Department used to maintain the electrical system during the suspension. This Work is included in the Unit Prices of the Pay Items that are part of the Traffic Control Signal System.

Submit to the Engineer a completed Locating Responsibility Form included in this section, with contact information including the names and telephone numbers for 24 hours a day, 7 days a week maintenance as defined in this section.

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Until final written acceptance of the Project by the Engineer (MnDOT 1716), locate underground traffic control signal facilities as required in this section. This Work is included in the Pay Item Traffic Control Signal System.

Notify MnDOT’s Locating Office to provide contact information and establish assumed responsibility for locating MnDOT’s underground traffic control signal system facilities within the Project. Fill out the form in this section and submit to the Engineer at the pre-construction meeting. Send a copy of the completed form to:

Electrical Services Dispatch Phone: (651)366-5750Fax: (651)366-5742E mail: [email protected] Minnehaha Ave. St. Paul, MN 55111-4014andLocating Supervisor Phone: (651)755-9061Fax: (651)366-5742E mail: [email protected] Minnehaha Ave. St. Paul, MN 55111-4014

(The following Section should be filled out by the specification writer to direct the contractor and project engineer to the correct person in the District.All Red text must be removed from the special provisions prior to the special provisions being submitted for project letting.

MnDOT District Signal Operations Name: _______________Phone: _______________Fax: _________________E mail: _______________Address: ______________Until final written acceptance of the project by the Engineer (MnDOT 1716) locate underground

traffic control signal facilities as required above.

(The following Section should be left on its own page so the contractor can remove it and use the blank page)All Red text must be removed from the special provisions prior to the special provisions being submitted for project letting.

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Locating Responsibility FormJob S.P. Number __________________________________

Job Type __________________________________

Start Date __________________________________

End Date __________________________________

T.H. __________________________________

Location __________________________________

Lighting/ Signal Inspector __________________________________

Contractor __________________________________

Contractor (24 Hour Contact) __________________________________

Project Manager __________________________________

Phone Number __________________________________

Fax Number __________________________________

Email __________________________________

Electrician __________________________________

Phone Number __________________________________

Locator Area __________________________________

Project Engineer __________________________________

Phone Number __________________________________

Chief Inspector __________________________________

Phone Number __________________________________

Weekly Meeting __________________________________


I Traffic Signal Mast Arm Pole Installation

Install traffic signal mast arm poles in accordance with 2565.3O “Traffic Signal Mast Arm Pole Installation”, and the following.

If equipment downtime is a concern for meeting completion of the pole installation process in accordance with 2545.3H “Pole Installation”, then provide at least two crews; one crew to stand the pole and the other crew to complete the anchor rod tightening procedure in accordance with the Contract Documents on the same day of standing the pole.

Erect structural steel members in a manner that will provide safety to workers, Inspectors, the public, and without damaging the steel members.

I.1 Traffic Signal Mast Arm Pole Structural Bolting

Use high strength bolts with F436 structural hardened washers placed under the bolt head and nut being turned during tightening for bolting mast arms and transformer bases to the poles. Do not use lock washers in the bolted connections.

Before structural bolt tightening of mast arms, luminaire extensions (plate to plate connections), and pole bases to the poles, ensure the slope of surfaces and bolted parts in contact with the bolt head and nut is no greater than 1:20 with respect to a plane normal to the bolt axis. Ensure the joint surfaces including bolt heads, nuts and washers are free of scale, dirt, loose scale, burrs, foreign material, and other defects that would prevent solid seating of parts.

Before assembling bolted connections, ensure bolt and nut threads, and the face of the nuts and underside of the bolt heads being turned into the washers are lubricated with an approved anti-seize lubricant in accordance with 3842.

Place a calibrated torque wrench on the nuts to tighten the bolts to the required torque values shown on Table SS-2.3-1. Tighten bolts in steps of 20%, 60% and 100% of the required torque value respectively and use a cross tightening pattern for each step. Allow the bolts to relax for 10 minutes and retighten to 100% of the required torque value.

Table SS-2.3-1ASTM A325 and ASTM A354 Bolts

Bolt Diameterinches

20% 60% 100%Required Torque for Tightening Lubricated Bolts in Foot Pounds

1/2 10 30 553/4 40 120 2007/8 60 190 3201 ½ 300 900 15001 ¾ 550 1650 2800

J Traffic Signal Mast Arm Pole Anchor Rod Tightening

Tighten traffic signal mast arm pole anchor rods in accordance with the MnDOT Anchor Rod Tightening Handbook “New Installation Procedures” and the MnDOT Anchor Rod Tightening Form.

Use a required low- profile hydraulic torque wrench listed on MnDOT’s APL Lighting “Lighting products” on the top nuts to tighten anchor rods to the required torque values specified in the MnDOT

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Anchor Rod Tightening Handbook. Obtain Engineer’s approval of the wrench and provide proof of calibration performed within the last 12 months from an accredited calibration service before installing traffic signal mast arm poles.

Complete a MnDOT Anchor Rod Tightening Form for each traffic signal mast arm pole. Submit completed forms to the Engineer. Keep the form on the next page on a separate page so the contractor can remove it from the special provisions and use it in the field.


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The following are hyperlinks for the MnDOT Anchor Rod Tightening Handbook and the Anchor Rod Tightening Form for Traffic Signal Mast Arm and Light Poles.

MnDOT Anchor Rod Tightening Handbook (pdf)

MnDOT Anchor Rod Tightening Form – For Traffic Signal and Light Poles (pdf)

K Single Nut Connection Anchor Rod Tightening

Tighten traffic signal structures that use single nut connection anchor rods in accordance with the manufacturer’s installation requirements and the following.

Structure bases requiring single-nut anchor rod connections are set directly on the foundation without leveling nuts. One hex nut for each ancho rod is used to fasten the base to the foundation anchor rods. Use washers in the connections in accordance with the manufacturer’s installation instructions.

Use leveling shims in accordance with Standard Plate 8129 when required to level the structure base on the foundation.

MnDOT traffic signal structures that require single nut connection installation includes the following:

(1) Pedestal and Pedestal Base Standard Plate No. 8122(2) APS Push Button Station (3) Tapered Traffic Signal Pedestal Pole

Apply an approved anti-seize lubricant in accordance with 3842 to the top threads of the anchor rods, to the threads of the nuts, and to the face of the nuts that turn into the washers.

Using a calibrated torque wrench, tighten the anchor rods in three passes of 20%, 60% and 100% of the required torque values respectively and in a cross- tightening pattern for each pass. After tightening to 100% torque, let the anchor rods relax for 10 minutes then re-tighten in a cross- tightening pattern to 100% of the torque value. Tighten anchor rods for single nut connections to the required torque values shown in Table SS-2.3-2.

Table SS-2.3-2Single Nut Connection Anchor Rods-Traffic Signal Structures

Structure Type

20% 60% 100%

Required Torque Tightening Values-ft. Lbs

APS Push Button Station

12 36 60

Pedestal and Pedestal Base Standard Plate

No. 8122

18 54 90

Tapered Traffic Signal Pedestal Pole

30 90 150

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Include the following language if the traffic control signal will not have an Emergency Vehicle Preemption system installed. State law requires all traffic control signals to be prewired for EVP.

https://www.revisor.mn.gov/statutes/?id=169.06

The plan should include the 3/C 14 AWG Signal Control Cable and the 3/C20 AWG EVP Detector Cable on the wiring diagram. These conductors should be pulled from the signal cabinet to the EVP round outlet box


L Wiring for Future Emergency Vehicle Preemption

Provide Signal Control Cable (3/C14 AWG) and Emergency Vehicle Pre-emption (EVP) Detector Cable (3/C 20 AWG) in accordance with 2565.3J and as detailed in the Plans.

Provide an EVP Round Outlet Box in accordance with 3814.2D.

Install signal control cable and EVP detector cable from the traffic control signal cabinet to the EVP round outlet box mounted on the mast arm.

M Compliance with NEC Article 110. 24

Provide fault current calculations in accordance with 2565.3Z and as follows:

Fill out the following electric service information form shown below for traffic control signal systems.

Provide to the Engineer, before final acceptance of the project, four copies of the electric service information form for traffic control signal systems and the Engineer will distribute the copies as follows:

MnDOT Electrical Services SectionMnDOT Traffic Electrical Systems EngineerMnDOT District Traffic EngineerCity of _________ or County of________

The Contractor provided "electrical service information form for traffic control signal systems" and available fault current calculations and labeling are included in the Unit Prices of the Pay Items that are part of the Traffic Control Signal System.

(The following form should be left on its own page so it can be removed from the special provisions and used by the contractor) See the next page of this document


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https://www.revisor.mn.gov/statutes/?id=169.06


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(The following language is to be used for required warning stickers on the backside of sign panels being installed on the signal system project. The Specification Writer must include the appropriate District contact person and phone number to the following paragraph).


N Sign Panel Warning Stickers

Install Department provided warning stickers on new sign panels in accordance with MnDOT 2564.3Q.

Give 30 Business Days advance notice to___________________ at ___-___-____ before picking up the Department provided warning stickers.

SS-2.4 AS BUILT DRAWINGS BASIS OF PAYMENT

Ensure Division S Special Provisions “As-Builts” are included in the Division S Special Provisions.This would include the pay item 2011.601.

2011.601/01000 AS BUILT AS BUILT LS LUMP SUM 2018

The District needs to include the verbiage below to trigger installation of Divisions S Special Provisions.Add the pay item as shown above to your pay item list. This should be included in every signal and lighting project.


A As Built Drawings and GPS Coordinates

As Built drawings and GPS coordinates in accordance with Division S Special Provisions “As-Builts” including Pay Item No. 2011.601 (AS BUILT).

Use the following language if the project has emergency vehicle preemption. Include the pay item for EVP. If the project does not have EVP, you still must install the 3 conductor 14 AWG and 3 conductor 20 AWG conductors. See “Wiring for Future Emergency Vehicle Preemption” above.

2565.501/00040 EMERGENCY VEHICLE PREEMPTION SYSTEM EMERGENCY VEHICLE PREEMPTION SYSTEM LS LUMP SUM 18


SS-3 (2565) EMERGENCY VEHICLE PREEMPTION (EVP) SYSTEMS

SS-3.1 DESCRIPTION

This Work consists of providing and installing emergency vehicle preemption (EVP) system at the intersection of _________ (_________) and _________ in ___________, __________ County in accordance with 2565 “Traffic Control Signals”, the Plans, and the following.

SS-3.2 MATERIALS

A Contractor Provided Equipment

Provide Emergency Vehicle Preemption (EVP) equipment in accordance with 3814 “Emergency Vehicle Pre-emption (EVP) Equipment”. Phase selectors (or other EVP equipment to be installed in the traffic control signal cabinet) will be installed in the Department provided cabinet by MnDOT personnel.

Deliver Contractor provided equipment for integration into the Department provided traffic control signal cabinet on the project to the following address:

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MnDOT Electrical Services Section (ESS)6000 Minnehaha AvenueSt. Paul, MN. 55111- 4014

Contractor provided equipment when specified includes EVP phase selectors, APS central control units, and Video image processors.

To ensure integration into the correct signal cabinet, before delivery to ESS label the Contractor provided equipment packaging with the following:

Assigned Traffic Engineering (TE) Number_____________________State Project No.__________________Contractor name__________________________Contact name and phone number_________________________

Notify ESS at least 3 Business Days in advance before delivering Contractor provided equipment. Have the TE Number on hand before calling. Contact the following in the order listed until notification has been received.



A EVP Equipment

Install EVP equipment in accordance with 2565 “Traffic Control Signals” and as shown on the Plans.

SS-4 (2565) TRAFFIC CONTROL INTERCONNECT

SS-4.1 DESCRIPTION

This Work consists of providing and installing conduit, handholes, interconnect cable for traffic control interconnect on T.H. ___, at the locations shown on the Plans, in accordance with MnDOT 2565, the Plans, and the following.

SS-4.2 MATERIALS

A Department Provided Equipment

Use the following language if a department provided master controller unit and equipment will be needed for the traffic control signal cabinet on the project.


As part of the traffic control interconnect, the Department will provide the master controller unit when required and required master control equipment as part of the traffic control signal cabinet at ___________ to operate the interconnected coordinated traffic control signal systems on T.H. ____ between ____ Street and ____ Street.

Use the following language if the in-place master controller unit and equipment will be used on the project.


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The master controller unit and required master control equipment to operate the interconnected coordinated traffic control signal systems on T.H. ___ is in place and located at the intersection of T.H. ___ and ________.

6 Pair is the standard conductor count in 2021.


B Interconnect Cable

Provide interconnect cable (___ PAIR 19 AWG shown on the Plans) in accordance with MnDOT 3815.2C.6b.


A Interconnect Cable Installation

Place interconnect cable in accordance with MnDOT 2565.3

The Department will make interconnect cable connections in each intersection traffic control signal cabinet to make the interconnected coordinated portion of the traffic control signal system operational.

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