COMMERCIAL MOTOR VEHICLE SIZE ENFORCEMENT

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 Tunnel or Bridge/Overpass “Hits” Costly, time-consuming infrastructure repairs – Single events $150,000 to $350,000 Possible motorist injuries, fatalities Traffic delays, fuel consumption, harmful emissions – Roadway closures from two weeks to two months – Traffic detours up to 45 minutes in length

CURRENT CHALLENGES Personnel Limitations Not every vehicle can be observed Not every vehicle can be measured – Subjective decision for which vehicles to measure Size measurements difficult to physically or safely capture – Traditional tools include measuring tape or bar Measurement process prone to human error, time-consuming

BACKGROUND 2006 European Scan Tour Emerging technologies Unconventional procedures Novel data applications Innovative funding mechanisms Multinational harmonization THE NETHERLANDS BELGIUM GERMANY FRANCE SLOVENIA SWITZERLAND

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 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 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 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

IMPLEMENTATION INFRASTRUCTURE PRESERVATION Vehicle Profiler System Vehicle Identification System Overheight Vehicle Detection System Height Sensors Driver Communication

IMPLEMENTATION INFRASTRUCTURE PRESERVATION PRE-SELECTION Vehicle Profiler System Vehicle Identification System Overheight Vehicle Detection System Height Sensors Driver Communication Height Sensors Driver Communication DSRC Camera/OCR

IMPLEMENTATION INFRASTRUCTURE PRESERVATION PRE-SELECTION DIRECT ENFORCEMENT Vehicle Profiler System Vehicle Identification System Overheight Vehicle Detection System Height Sensors Driver Communication Height Sensors Driver Communication Citation Generation Height, Width, Length Sensors DSRC Camera/OCR

BENEFITS Ability to monitor and process higher volume of CMVs More efficient use of personnel Increased measurement accuracies, certainty in court Significant cost savings attributable to a single prevented infrastructure impact event Reduced congestion, harmful emissions

FUNCTIONAL INTERFACE

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