Integrating EMME/2TM into the GIS World

“TerraLogic GIS “RoadLink”

Interoperability

Customized Solution

RoadLink

Contributors

Public Works, Lewis County, Washington Mark Cook – Director, Project Manager Matt Hyatt & Stearns Wood – GIS

Consultants Michael Booth, Perteet Inc. - Project Manager Robert Tung, PhD, RST International – Modeler Jin Ren, Consultant – Modeler Bin Lee, Perteet Inc. – Model Support Chris Hansen, TerraLogic GIS – Application Development Manager Richard Chase, TerraLogic GIS – Senior Application Developer

GIS Objectives

Interoperability of Road Networks

GIS

EMME/2

Maintenance/Mgmt

Street Assets

GIS Method Highlights

Route#

275

Arterial Name

Dubuque Rd.FTRP

37564

Intersect Name

131st Ave. SE

Measure

38901 135st Ave. SE

3.5

7.75

Relational Database

Measure 3.5

Event Theme

DatabaseConnect

Dubuque Rd131st Ave. SE

135st Ave. SE

Measure 7.75

Project Scope - Client Lewis County Public Works Department in

Washington State, USA

Lewis County, WA

Project Scope - Need Integrated system to view transportation

modeling results from EMME/2 in a GIS ArcMap environment

Lewis County, WA

Project Scope – The Challenge

Data

Conceptual

Converting Model data to Map data

Data Representation

Typical Link representation of road network

Link data vs. Road data

EMME/2 Link

EMME/2 Link

Road Data

EMME/2 data concerns Non-Ideal Situation

Ideal if nodes all placed precisely on existing road polylines

1033

EMME/2 Link

EMME/2 data concerns Non-Ideal Situation

Ideal if intersection nodes at exact intersection locations they represent

1055

EMME/2 data concerns Non-Ideal Situation

Ideal if each link falls neatly onto a single route.

1088

1087

EMME/2 data concerns Non-Ideal Situation

Ideal if more nodes are used Work-around to place node at half way point

Move Node to here

Node Data Concerns Node Placement

Nodes not placed close enough to actual road Nodes not placed accurately at intersections Sometimes one node used for two intersections

Solution Pre-conditioning of Nodes is required For 1000 nodes this can be done manually

Road data concerns

State Road Data

County Road Data

City Road Data

• Lack of unified road route system

Route systems & Linear Referencing Creating Routes allows events to be mapped to a

subsection of the route using linear referencing Point events happen at single point location Linear events occur along a linear section

Road data concerns

County Routes + EMME2 Links, missing are state roads and city roads

•Roads change names as direction changes•Roads change names as they enter cities•Road sections shared by more than one route

Complexity Level – High

Solution:

Create new unified route system

New Unified Route System County can continue using existing route system for all current administrative needs New Route system for correlating EMME2 data with county/state/city roads only Challenges include

Accurate Node Placement Creating Sufficient Route system Improving Efficiency

Automate the Process1. Automate as much as possible!

1. Route Creation using ArcMap tools

2. Place nodes on Routes using ArcMap tools

3. Correlate link records with node route data using TerraLogic GIS “RoadLink” admin tool

2. Manual Edit Nodes if necessary

3. Manual Edit Roads “Alias” field if necessary

4. Repeat

Set up – may take multiple iterations

Create Routes Locate Nodes on Routes

Transfer Node data to Link records

“RoadLink”

Road data

ArcMap ArcMap

Locate Links as Linear Road events

ArcMap

QA/QC Link Events andRevise Road data accordingly

Road Data

FID Shape … NEW FULLNAME ALIAS0 Polyline …… 0 Main St Main St

1 Polyline …… 0 Main St Main St

2 Polyline …… 0 State Route 6 State Route 6

3 Polyline …… 0 State Route 6 State Route 6

Create Routes

FID Shape ALIAS0 Polyline Main St

1 Polyline State Route 6

3 Polyline 1st St

State Route 6 Main St

1st St

Locate Nodes

FID Shape RID MEAS NODE_ID ….

0 Point M Main St 14441.25 752

1 Point M 1st St 1271.33 752

2 Point M State Rt 6 12121.22 753

752

State Route 6 Main St

1st St

753

Transfer Node Event DataTo Link Records

Link Data

Link_id FromNode ToNode RouteID FromMeasure ToMeasure Data1 Data2

1 11 22 289 3.678 1.12 HOV 11.3

2 752 753 HOV 21.0

FromNode data set

NodeID RouteId Measure

11 234 12.345

11 289 3.678

ToNode data set

NodeID RouteId Measure

22 634 2.88

22 289 1.12

22 238 7.23

22 355 0.00

“RoadLink”

Locate Links

as Linear Events

Locate Links

as Linear Events

QA/QC issues

This case shows a situation where the linear event cannot be made because the link spans more than one route.

The solution is to rename the “Alias” attribute of the Main St. road section to State Route 6 and then complete the cycle again.

752

State Route 6 Main St

1st St

753

Link Data

Link_id FromNode ToNode RouteID FromMeasure ToMeasure Data1 Data2

1 752 753 HOV 21.0

Set up – may take multiple iterations

Create Routes Locate Nodes on Routes

Transfer Node data to Link records

“RoadLink”

Road data

ArcMap ArcMap

Locate Links as Linear Road events

ArcMap

QA/QC Link Events andRevise Road data accordingly

Pre-Edited Node data

TerraLogic GIS “RoadLink” Tools Administrative Tool

Coordinates Node events with Link records

General User Tool Allows direct import of

EMME/2 model data into DBaseIV table and adds route data

“RoadLink” Administrative Tool

“RoadLink” General User Tool

“RoadLink” Benefits Showing the EMME2 data on the Map

Create linear event table from DBaseIV table and show labels

Actual

“RoadLink” Benefits A user can, with relative ease, take the results of an EMME/2

model run and display the results in a typical GIS mapping environment

Data such as daily traffic volume can be seen on the map associated with the roads that will actually carry the traffic and not as just a vague connection between destinations

Data to be conveyed visually in a much more informative and intuitive manner than by using the link lines alone.

The decision to show or hide the actual link sections is up to the GIS map user.

Interoperability with EMME/2 AND other road networks (pavement management, street asset inventory, etc.)

For More Information… richard@terralogicgis.com chris@terralogicgis.com Project Contributors:

Mark Cook, Lewis County Public Works, Washington

Michael Booth, Perteet, Inc. Dr. Robert Tung, RST International Jin Ren, PE, Jin Ren Consulting

RoadLink

Interoperability

Customized Solution