Carrying both transponders will likely cause problems because each transponder simultaneously emits its identifying signal. Even if you are traveling in Oregon with your Green Light transponder mounted correctly and your PrePass transponder stored in the glove box, there is still a good chance the system will detect the PrePass transponder signal first and spoil the chance to preclear the weigh station.
For trucks with both transponders, we recommend:
- Use just the Oregon Green Light transponder.
- Return the other transponder to Prepass.
- Call 1-800-PrePass to ask them to enroll your Green Light transponder identification number into the PrePass preclearance system.
PrePass Transponders
Motor carriers with a PrePass transponder can sign up to use it in Oregon’s Green Light Preclearance Program. Carriers wanting to use their PrePass transponder in Oregon should contact the
PrePass Customer Service Center at 1-800-PREPASS (1-800-773-7277). Their hours are Monday through Friday, 6 a.m. to 7 p.m. Mountain Time (excluding holidays). Request your PrePass transponder to be enrolled in the Oregon Green Light Program. PrePass will then contact us to complete the enrollment process.
Terms and Conditions of Transponder Usage in Oregon