Upload
lolita
View
36
Download
0
Embed Size (px)
DESCRIPTION
AGENCY-WIDE BENEFITS ------------------------------------------------------------------------------------ COMMERCIAL MOTOR VEHICLE SIZE AND WEIGHT MANAGEMENT. CURRENT CHALLENGES. Significant Growth in CMV Traffic Increased congestion and delay Demand for larger and heavier vehicles - PowerPoint PPT Presentation
Citation preview
AGENCY-WIDE BENEFITS ------------------------------------------------------------------------------------
COMMERCIAL MOTOR VEHICLESIZE AND WEIGHT MANAGEMENT
CURRENT CHALLENGES
Significant Growth in CMV Traffic• Increased congestion and delay
• Demand for larger and heavier vehicles
• Mounting stress on infrastructure
• Greater need for effective and efficient enforcement
CURRENT CHALLENGES
CMV Size and Weight Non-compliance • Premature pavement deterioration
• Increased annual maintenance costs– State: $8 to $144 million– National: $265 million to $1.11 billion
• Costly, time-consuming infrastructure repairs
– Single events: $150,000 to $350,000
• Compromised safety levels
• Traffic delays, fuel consumption, harmful emissions
CURRENT CHALLENGES
Bridge Infrastructure Deterioration• 72,500 U.S. bridges “structurally deficient”
• $65.3 billion repair estimate
• Inexact methods to reduce, refine, prioritize actions– Uncertainties in traffic loading– Uncertainties in bridge response
CURRENT CHALLENGES
Personnel Limitations• Inflexible fixed weigh facilities
• Significant effort expended on compliant carriers– 1% violation capture rates on U.S. Interstates
• Labor-intensive permit review, approval, issuance
• Lack of coordination, integration, data sharing
– Planning and programming– Enforcement– Design and engineering
BACKGROUND
2006 European Scan Tour• Emerging technologies
• Unconventional procedures
• Novel data applications
• Innovative funding mechanisms
• Multinational harmonization
THE NETHERLANDSBELGIUM
GERMANY
FRANCE
SLOVENIASWITZERLAND
EUROPEAN APPROACH
Unique Partnerships• Similar agencies of different jurisdictional levels
– National and regional law enforcement agencies
• Different agencies– Transportation, law enforcement, regulatory, and
prosecution agencies
In The Netherlands, the Ministry of Transport funds 100 additional limited capacity National Police Agency
officers who focus 40% and 60% of their time on weight enforcement and congestion/incident
management activities, respectively.
EUROPEAN APPROACH
Technology-based Policies/Procedures • CMV enforcement
– size– weight
• WIM system calibration
• OS/OW vehicle permitting, routing, and monitoring
• Bridge infrastructure preservation
EUROPEAN APPROACH
CMV Size Enforcement • Infrastructure preservation
– Switzerland, The Netherlands protect critical tunnels
• Pre-selection for manual enforcement– Germany, combined with Toll Collect system
• Direct enforcement– Switzerland, combined with fixed weigh facilities
BENEFITS Higher volume of CMVs monitored, processed More efficient use of personnel Increased accuracies, certainty in court Significant infrastructure damage cost savings Reduced congestion, harmful emissions
EUROPEAN APPROACH
CMV Weight Enforcement • Pre-selection for manual enforcement
– Various countries, supports mobile and fixed operations
• Enforcement resource scheduling– France, Slovenia, The Netherlands utilize historic WIM data
• Preventative carrier contacts– France, The Netherlands
target habitually non-compliant carriers
• Bypass prevention– France, The Netherlands
support site selection, site level system plans
Pre-selection, enforcement resource scheduling, and
preventative carrier contacts often combined to provide
comprehensive enforcement approach.
EUROPEAN APPROACH
• Direct enforcement– France, The Netherlands leading efforts
– Low-speed and high-speed WIM– Attaining sufficient WIM system accuracy levels– Gaining metrological certification– Modifying existing laws that require static measurements
BENEFITS Increased violation capture rates Reduced fixed facility demand Reduced harmful emissions from static
weighing process Significant infrastructure damage cost savings
EUROPEAN APPROACH
WIM System Calibration • Continuous calibration
– France, The Netherlands, during scheduled enforcement
• Quality assurance– The Netherlands issues QA Statement with every data request
• Dynamic calibration– The Netherlands utilizes specially designed vehicle
BENEFITS Eliminates resource-intensive field calibration Enhanced data quality benefits:
Planning and programming Enforcement Design and engineering
Axl
e L
oad
Distance
Dynamic
Static
WIM Sensors
EUROPEAN APPROACH
OS/OW Vehicle Permitting, Routing, and Monitoring • Self Permitting/Routing
– Switzerland provides self-routing Website
• Bridge Safety Assessment– France, Slovenia use measured structure response, traffic data
• Remote Field Verification of Permits– Slovenia, The Netherlands compare in-field measurements
to permit
BENEFITS Increased personnel efficiency, cost-effectiveness Increased bridge safety accuracy Increased permit violation capture rates Significant infrastructure damage cost savings Reduced congestion, harmful emissions
EUROPEAN APPROACH
Bridge Infrastructure Preservation • Structural/safety assessment
– Slovenia, France enhance the accuracy of bridge safety conclusions through direct measurements
• Load testing– Slovenia uses “soft” load testing
BENEFITS Offers traditional WIM system capabilities Cost-effective, non-intrusive data capture More accurate structural/safety assessment Supports “soft” load testing Significant cost savings from appropriate
rehabilitation Reduced congestion, harmful emissions
SUPPORTING TECHNOLOGIES
• Overheight Vehicle Detection System
• Vehicle Profiler System
• WIM Systems– In-road– Bridge
• Dynamic Calibration Vehicle
• Vehicle Identification System
• Advanced Routing/Permitting System
• Archived Records Database
SUPPORTING TECHNOLOGIES
Overheight Vehicle Detection System
Functions
• Detects overheight vehicles using infrared, laser sensors
• Alerts driver of overheight status
• Recommends action using static signs/flashers, audible alarms, dynamic message signs
Considerations
• Provides 24/7 monitoring
• May experience false alarms
• Audible alarms may not be heard by driver, may disturb area businesses/residents
Estimated Cost
• $25,000 - $125,000 per system/approach
• Varies by driver communication technologies, on-site communication requirements
SUPPORTING TECHNOLOGIES
Vehicle Profiler System
Functions
• Provides three-dimensional vehicle profile
• Supports pre-selection at high speeds
• Supports direct enforcement at low speeds
Considerations
• Provides 24/7 monitoring in high-speed applications
• May be combined with fixed weigh facilities
• Accuracies to ±2 in. height/width, ±4 in. length at 5 mph
Estimated Cost • $250,000 per system
SUPPORTING TECHNOLOGIES
In-road WIM System
Functions• Measures and records axle, gross weight using
piezo quartz, piezo ceramic, fiber optic sensors
Considerations
• Provides 24/7 monitoring
• May be less accurate than traditional WIM systems
• Low cost supports wider implementation
Estimated Cost
• $9,000 - $32,500 per lane
• Varies by sensor type, on-site communication requirements
• Requires additional, ongoing maintenance with associated costs
SUPPORTING TECHNOLOGIES
Bridge WIM System
Functions
• Measures, records weight using existing structures instrumented with strain transducers/gauges
• Measures, records axles using traditional sensors or Nothing-on-Road/Free-of-Axle Detector (NORFAD) systems
Considerations
• Requires suitable bridge and location• Most successful on short, stiff bridges• Structural assessments require transducer calibration• Calibration may require specialized expertise
Estimated Cost• $100,000 - $130,000 per bridge/system• Varies by sensor type, on-site communication requirements
-4,0
-3,5
-3,0
-2,5
-2,0
-1,5
-1,0
-0,5
0,0
0,5
1,0
0 0,5 1 1,5 2 2,5 3
Str
ain
(V
)
Static
Dynamic
SUPPORTING TECHNOLOGIES
Dynamic Calibration Vehicle
Functions• Calibrates dynamic load measurements
to true dynamic - rather than static - loads
Considerations• May be used to calibrate traditional
static weigh bridges
Estimated Cost• $1.72 million for vehicle construction
• $6,300 per in-service day
SUPPORTING TECHNOLOGIES
Vehicle Identification System
Functions
• Cameras capture vehicle silhouette, license plate images
• OCR software converts license plate image to numeric data
• Images/data transmitted via DSRC to portable computer used by enforcement officials
Considerations • Conversion of license plate images may result in errors
Estimated Cost• $52,000 - $80,000 per system
• Varies by camera type, on-site communication requirements
SUPPORTING TECHNOLOGIES
Advanced Routing/Permitting System
Functions• Allows drivers to self-route based on origin, destination,
route restrictions
Considerations
• Requires supporting highway, bridge information
• Initial development costly due to different state fees, routing, regulations
• Provides 24/7 access for industry
Estimated Cost • $2.0 – $8.3 million per statewide system
SUPPORTING TECHNOLOGIES
Archived Records Database
Functions
• Supports data-driven enforcement scheduling
• Supports preventative carrier contacts
• Supports enhanced data quality
• Encourages long-term performance monitoring
Considerations • Requires procedures for quality control
Estimated Cost • $225,000 - $300,000
FUNCTIONAL INTERFACE
QUESTIONS