Oregon Department of Transportation

Oregon Green Light Project Mainline Preclearance Systems Weigh-in-Motion (WIM) Scales Automated Vehicle Identification (AVI) Systems Transponders Travel Advisory Systems Downhill Speed Information Systems Road Weather Information Systems (RWIS) 12 12

How Is This Accomplished? Weigh-In-Motion systems check the vehicles weight and height An automatic vehicle identification reader checks state records for registration, tax status, safety inspection status The driver is signaled with an in-cab device to either Report to the station or Bypass 17

Mainline Preclearance Oregon Green Light System Checks: Truck Size, Weight, Height Transponder Signal to Identify Vehicle/Carrier Records Related to Registration, Tax, and Safety Transponder reader Over-Height detector Weigh-in-motion single load cells and axle sensors The Green Light weigh station PRECLEARANCE SYSTEM weighs trucks in-motion and automatically identifies them as they approach Oregon's BUSIEST WEIGH STATIONS. Trucks that SUCCESSFULLY PASS a quick computer check of SIZE, WEIGHT, HEIGHT, REGISTRATION, TAX & SAFETY records are signaled to proceed without stopping. This is a PHOTO of TRUCK being WEIGHED-in-motion, IDENTIFIED by its TRANSPONDER, and PRECLEARED to pass the Farewell Bend Port of Entry on I-84 by the IDAHO BORDER.

Single-Load-Cell (SLC) Scale Installation

Axle Sensor Installation

Loop Detectors System Electronics

Automated Vehicle Identification (AVI) & Over Height Detection AVI Antennas Infra-red Over Height Sensor

TYPICAL SITE LAYOUT AVI READERS READ THE TRUCK’S TRANSPONDER WIM SCALES MEASURE THE VEHICLE’S WEIGHT LOOPS AND AXLE SENSORS DETERMINE LENGTH, SPEED AND AXLE SPACING

TYPICAL SITE LAYOUT AVI READERS READ THE TRUCK’S TRANSPONDER WIM SCALES MEASURE THE VEHICLE’S WEIGHT LOOPS AND AXLE SENSORS DETERMINE LENGTH, SPEED AND AXLE SPACING OVER HEIGHT DETECTOR CHECKS IF THE VEHICLE IS OVER LEGAL HEIGHT

TYPICAL SITE LAYOUT AVI READERS READ THE TRUCK’S TRANSPONDER WIM SCALES MEASURE THE VEHICLE’S WEIGHT LOOPS AND AXLE SENSORS DETERMINE LENGTH, SPEED AND AXLE SPACING OVER HEIGHT DETECTOR CHECKS IF THE VEHICLE IS OVER LEGAL HEIGHT AVI READERS SEND A RED OR GREEN LIGHT TO THE TRANSPONDER

TYPICAL SITE LAYOUT AVI READERS READ THE TRUCK’S TRANSPONDER WIM SCALES MEASURE THE VEHICLE’S WEIGHT Green Light LOOPS AND AXLE SENSORS DETERMINE LENGTH, SPEED AND AXLE SPACING OVER HEIGHT DETECTOR CHECKS IF THE VEHICLE IS OVER LEGAL HEIGHT AVI READERS SEND A RED OR GREEN LIGHT TO THE TRANSPONDER

Transponders Dedicated Short-Range Communications Mainline Preclearance 15 30

22 Oregon weigh stations operational Green Light sites 22 Oregon weigh stations operational

MCTD began keeping track of the number of trucks that “bypassed” weigh stations in January 1999. Four weigh stations were preclearing an average of 51 trucks a day. There are now 22 stations preclearing 4,400 trucks a day. 1,600,000 1,400,000 1,200,000 1,000,000 800,000 600,000 400,000 200,000 1,606,000 1,500,000 1,425,000 1,375,000 Today, nearly 4,200 companies are equipped With more than 40,000 transponders 1,100,000 850,000 17,615 1999 2001 2003 2005 2007 2009 2011

Information from the American Trucking Association estimates the cost of operating a truck to be $1.96/minute.

An independent evaluation determined that the average time a truck spends in a weigh station is five-to-eight minutes.

Based on these figures the carrier industry overall currently saves more than 125,000 hours of travel time and $14.7 million in operating cost annually.

Types of Data Collected Individual axle weights Axle group weights Gross Vehicle Weight (GVW) Axle spacings Vehicle Classification Date/Time stamp Reports (hourly, daily, weekly, monthly) Speed Equivalent Single Axle Load’s Weight warning/violation

Benefits of Data Collection State Government — Where taxpayers demand efficiency and cost savings Highway Planning Traffic volume counts Vehicle classifications Frequency patterns (minimum/peak) Build for longevity (performance-based) Bridge Planning Designs based on Weight/Configuration data Repair/Re-design of existing structures (change in patterns) Infrastructure Preservation Save an estimated $20 million annually in Oregon in maintenance costs Address the problem with pavement damage from overweight trucks, estimated to cost the U.S. $670 million annually PROTECTS INFRASTRUCTURE by more EFFECTIVELY ENFORCING size & weight limits. ENHANCES ability identify & stop OVERWEIGHT trucks that cause $670 million in PAVEMENT DAMAGE to the NATION"S highways. Oregon STATE UNIVERSITY estimate Green Light could SAVE Oregon $200 million over 10 YEARS from COSTS related to DETERIORATING PAVEMENT. ELECTRONIC DATA collection allows OFFICERS spend 40% time at OUTLYING scales where OVERWEIGHT trucks MORE LIKELY to be found 35 22

Independent Evaluation OSU Independent Evaluation “Green Light Preclearance Systems identify and stop more overweight trucks that would otherwise be allowed to proceed and cause millions in highway pavement damage” Dr. Chris Bell

The “Green” Light Program The DEQ completed emission testing in 2008. The results found that trucks bypassing a weigh station experienced a 57% increase in fuel economy, and reduced harmful pollutants (particulate matter, carbon dioxide, carbon monoxide, nitrogen oxides, and hydrocarbons) by 36% to 67%. One study in particular found that these reductions achieve the highest per-value ton of pollutant reduced.

Winner of a 2000 “Best of ITS” Award Semi-finalist 2001 JFK Harvard “Innovations in Government” Award

Oregon Green Light wins AASHTO Excellence award 2002 AASHTO Award Oregon Green Light wins AASHTO Excellence award The Green Light weigh station preclearance program is a winner of the top award in the American Association of State Highway Transportation Officials (AASHTO) 2002 Team Excellence Program. The “Exemplary Partner” award recognizes the work of ODOT’s Green Light team. 64 teams from around the U.S. entered the competition.

David Fifer david.a.fifer@state.or.us 503-378-6054 Comments or Questions? Contact the Oregon Department of Transportation David Fifer david.a.fifer@state.or.us 503-378-6054