2Oregon Green Light Project Mainline Preclearance SystemsWeigh-in-Motion (WIM) ScalesAutomated Vehicle Identification (AVI) SystemsTranspondersTravel Advisory SystemsDownhill Speed Information SystemsRoad Weather Information Systems (RWIS)1212
3How Is This Accomplished? Weigh-In-Motion systems check the vehicles weight and heightAn automatic vehicle identification reader checks state records for registration, tax status, safety inspection statusThe driver is signaled with an in-cab device to either Report to the station or Bypass17
4Mainline Preclearance Oregon Green Light System Checks:Truck Size, Weight, HeightTransponder Signal to Identify Vehicle/CarrierRecords Related to Registration, Tax, and SafetyTransponder readerOver-Height detectorWeigh-in-motion single load cells and axle sensorsThe 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.
8Automated Vehicle Identification (AVI) & Over Height Detection AVI AntennasInfra-redOver Height Sensor
9TYPICAL SITE LAYOUT AVI READERS READ THE TRUCK’S TRANSPONDER WIM SCALES MEASURE THE VEHICLE’S WEIGHTLOOPS AND AXLE SENSORS DETERMINE LENGTH, SPEED AND AXLE SPACING
10TYPICAL SITE LAYOUT AVI READERS READ THE TRUCK’S TRANSPONDER WIM SCALES MEASURE THE VEHICLE’S WEIGHTLOOPS AND AXLE SENSORS DETERMINE LENGTH, SPEED AND AXLE SPACINGOVER HEIGHT DETECTOR CHECKS IF THE VEHICLE IS OVER LEGAL HEIGHT
11TYPICAL SITE LAYOUT AVI READERS READ THE TRUCK’S TRANSPONDER WIM SCALES MEASURE THE VEHICLE’S WEIGHTLOOPS AND AXLE SENSORS DETERMINE LENGTH, SPEED AND AXLE SPACINGOVER HEIGHT DETECTOR CHECKS IF THE VEHICLE IS OVER LEGAL HEIGHTAVI READERS SEND A RED OR GREEN LIGHT TO THE TRANSPONDER
12TYPICAL SITE LAYOUT AVI READERS READ THE TRUCK’S TRANSPONDER WIM SCALES MEASURE THE VEHICLE’S WEIGHTGreen LightLOOPS AND AXLE SENSORS DETERMINE LENGTH, SPEED AND AXLE SPACINGOVER HEIGHT DETECTOR CHECKS IF THE VEHICLE IS OVER LEGAL HEIGHTAVI READERS SEND A RED OR GREEN LIGHT TO THE TRANSPONDER
15MCTD began keeping track of the number of trucks that “bypassed” weigh stations in January Four weigh stations were preclearing an average of 51 trucks a day. There are now 22 stations preclearing 4,400 trucks a day.1,600,0001,400,0001,200,0001,000,000800,000600,000400,000200,0001,606,0001,500,0001,425,0001,375,000Today, nearly 4,200companies areequipped Withmore than 40,000transponders1,100,000850,00017,615
16Information from the American Trucking Association estimates the cost of operating a truck to be $1.96/minute.
17An independent evaluation determined that the average time a truck spends in a weigh station is five-to-eight minutes.
18Based 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.
19Types of Data Collected Individual axle weightsAxle group weightsGross Vehicle Weight (GVW)Axle spacingsVehicle ClassificationDate/Time stampReports (hourly, daily, weekly, monthly)SpeedEquivalent Single Axle Load’sWeight warning/violation
20Benefits of Data Collection State Government — Where taxpayers demand efficiency and cost savings Highway PlanningTraffic volume countsVehicle classificationsFrequency patterns (minimum/peak)Build for longevity (performance-based)Bridge PlanningDesigns based on Weight/Configuration dataRepair/Re-design of existing structures (change in patterns)Infrastructure PreservationSave an estimated $20 million annually in Oregon in maintenance costsAddress the problem with pavement damage from overweight trucks, estimated to cost the U.S. $670 million annuallyPROTECTS 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 found3522
21Independent Evaluation OSUIndependent 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
22The “Green” Light Program The DEQ completed emissiontesting in The resultsfound that trucks bypassing a weigh station experienceda 57% increase in fueleconomy, 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.
23Winner of a 2000 “Best of ITS” Award Semi-finalist 2001 JFK Harvard “Innovations in Government” Award
24Oregon Green Light wins AASHTO Excellence award 2002 AASHTO AwardOregon Green Light wins AASHTO Excellence awardThe Green Light weigh station preclearance program is awinner of the top award in the American Association ofState Highway Transportation Officials (AASHTO)2002 Team Excellence Program. The “Exemplary Partner”award recognizes the work ofODOT’s Green Light team.64 teams from around the U.S. entered the competition.
25David Fifer firstname.lastname@example.org 503-378-6054 Comments or Questions?ContacttheOregon Department of TransportationDavid Fifer