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COORDINATED ENFORCEMENT WORKSHOP. AASHTO Subcommittee on Highway Transport June 6-9, 2010Portland, Maine. BACKGROUND. 2006 European Scan Tour Commercial Motor Vehicle Size and Weight Enforcement in Europe http://international.fhwa.dot.gov/ links/pub_details.cfm?id=554 - PowerPoint PPT Presentation
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COORDINATED ENFORCEMENT WORKSHOP
AASHTO Subcommittee on Highway Transport June 6-9, 2010 Portland, Maine
BACKGROUND
2006 European Scan Tour• Commercial Motor Vehicle Size and
Weight Enforcement in Europe– http://international.fhwa.dot.gov/
links/pub_details.cfm?id=554
• Effective Use of Weigh-in-motion Data:The Netherlands Case Study
– http://international.fhwa.dot.gov/pubs/pl07028/pl07028.pdf
• VSW Management Technology Transfer/Best Practices
– http://144.171.11.40/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=2335
SIZE ENFORCEMENT
Technology-based Policies/Procedures• 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
SUPPORTING TECHNOLOGIES
Overheight Vehicle Detection System
Functions
• Detects overheight vehicles using infrared, laser sensors
• Alerts driver of overheight status• Recommends action using static/dynamic
signs, flashers, audible alarms
Considerations
• Provides 24/7 monitoring• May experience false alarms• Audible alarms may not be heard by driver,
may disturb area businesses/residents
EstimatedCost
• $25,000 - $125,000 per system/approach• Varies by driver communication technologies,
on-site communication requirements
SUPPORTING TECHNOLOGIES
Vehicle Profiler System
Functions• Provides 3D vehicle profile • Supports pre-selection at high speeds• Supports direct enforcement at low speeds
Considerations
• May be combined with weigh/toll facilities • Provides 24/7 monitoring (high-speed)• Accuracies to ±2 in. height/width, ±4 in. length
at 5 mph (low-speed)
EstimatedCost • $250,000 per system
SUPPORTING TECHNOLOGIES
Vehicle Identification System
Functions
• Cameras capture vehicle silhouette, LP images• OCR software converts LP image to numeric
data• Images/data transmitted via DSRC to portable
computer used by enforcement officials
Considerations • Conversion of LP images may result in errors
EstimatedCost
• $52,000 - $80,000 per system• Varies by camera type, on-site communication
requirements
U.S. OPPORTUNITIES
Size Enforcement• Overheight vehicle detection system
– Nearly half of all U.S. States currently report using– Expanded use
• Vehicle profiler system – Supplemental to existing fixed weigh/toll facilities– Installed concurrently with new toll 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
WEIGHT ENFORCEMENT
Technology-based Policies/Procedures• Pre-selection for manual enforcement
– Various countries, supports mobile and fixed operations• Enforcement resource scheduling
– France, Slovenia, The Netherlands utilize historic WIM datato direct mobile enforcement
• Preventative carrier contacts– France, The Netherlands
target habitually non-compliant carriers
WIM+VID OVERWEIGHT VEHICLE DATA
SELECTION OF NON-COMPLIANT
COMPANIES
PREVENTATIVE VISIT
COMPANY NON-COMPLIANT
PRO-ACTIVE ENFORCEMENT
COMPANY OK
MONITORING TWO MONTHS
MONITORING INDEFINITELY
COMPANY UNWILLING
WEIGHT ENFORCEMENT
• Bypass prevention– France, The Netherlands support:
– site selection– site level system plans
• 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
WEIGHT ENFORCEMENT
WIM System Calibration • Continuous calibration
– France, The Netherlands, during scheduled enforcement• Quality assurance
– The Netherlands issues QA Statement with every data request
– Number of axles measured
– Period of measure
– Inaccuracy
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 systems• Low cost supports wider implementation
EstimatedCost
• $9,000 - $32,500 per lane• Varies by sensor type, on-site communication
requirements• Requires additional, ongoing maintenance
SUPPORTING TECHNOLOGIES
Bridge WIM System
Functions
• Measures weight using existing structures instrumented with strain transducers/gauges
• Records axles using traditional sensors or NORFAD systems
Considerations• Requires suitable bridge and location• Most successful on short, stiff bridges• Calibration may require specialized expertise
EstimatedCost
• $100,000 - $130,000 per bridge/system• Varies by sensor type, on-site communication
requirements
-4,0-3,5-3,0-2,5-2,0-1,5-1,0-0,50,00,51,0
0 0,5 1 1,5 2 2,5 3
Stra
in (V
)Static
Dynamic
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
EstimatedCost • $225,000 - $300,000
U.S. OPPORTUNITIES
Weight Enforcement• Pre-selection for manual
enforcement– Expanded use at fixed
weigh facilities– Mobile operations
• Enforcement resource scheduling– MT, IN, MN
• Preventative carrier contacts– Model after FMCSA’s Compliance Review process– TRB’s Motor Vehicle Size and Weight Committee
(AT055) promoting shipper/carrier education regarding weight compliance
Virtual weigh stations are proliferating in the U.S. as a cost-effective
alternative to fixed weigh facilities.
U.S. OPPORTUNITIES
• Direct enforcement– Low speed WIM– Supplemental to fixed weigh facilities
• Continuous WIM calibration– Integrated into routine enforcement operations
BENEFITS· Increased violation capture rates· Reduced fixed facility demand · Reduced harmful emissions from static
weighing process· Reduced resource-intensive field calibration· Enhanced data quality· Significant infrastructure damage cost savings
SPECIAL TRANSPORTS
Technology-based Policies/Procedures• Self Permitting/Routing
– Switzerland provides self-routing website• Bridge Safety Assessment
– France, Slovenia use measuredstructure response, traffic data
• Remote Field Verification of Permits– Slovenia,
The Netherlands compare in-field measurements to permit on file
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 industryEstimatedCost • $2.0 – $8.3 million per statewide system
U.S. OPPORTUNITIES
Special Transports• Advanced routing and permitting systems
– CA, CO, GA, LA, NY, OK, RI, SD, TN, TX, WI– Increasing sophistication for routing functions– More robust infrastructure data
• Improved bridge safety assessments– Field tests of bridge WIM in AL, CT
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
Unique Partnerships• Similar agencies of different jurisdictional levels
– National and regional law enforcement agencies• Different agencies
– Transportation– Law enforcement– Regulatory– Prosecution
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.