
PrePass® Weigh Station Bypass
PrePass® is an automated, state-of-the-art system allowing heavy vehicles that are registered in the program to legally bypass open weigh stations. For questions re. PrePass, call 1-800-PrePass (1-800-773-7277) or go to the PrePass web site at http://www.prepass.com. |
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Transponders: Carriers obtain special transponders used for communication between computers in the weigh stations and the vehicles. |
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Green Signal: If all requirements for weight, size, safety, etc. are met, the driver receives a green signal that allows the vehicle to bypass the weigh station. |
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Red Signal: If all requirements for weight, size, safety, etc.are NOT met, the driver receives a red signal which requires the vehicle to go through the weigh station. |
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Non-PrePass™ vehicles: All heavy vehicles that are not registered in PrePass™ are required to pass through weigh stations that are open. |
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Program Statistics: The system has been in operation in California since 1994. Currently, there are 36 weigh stations across California deploying the PrePass™ technology. |
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How PrePass® Works |
| This graphic diagram shows the process of the PrePass™ system. | |
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Bypass Sites Map |
| This 2.2 megabyte map shows the location of the California PrePass™ sites. | |
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Bypass Sites List |
| This list includes the location and status of all bypass sites in California. | |
| How to register for PrePass® | |
| The PrePass™ web site allows you to register easily and learn more about the PrePass™ system. |
For questions re. PrePass®, such as enrollment and account information, call:
1-800-PrePass (1-800-773-7277).
For technical questions re. weigh-in-motion devices, contact:
Stan Norikane at California Dept. of Transportation at (916) 654-5651.
For corrections or suggestions on this web site, please contact Webmaster.
Last revised 11/9/07.
Return to the Caltrans "Office of Truck Services" page.








