A transponder is a small electronic device that attaches to the inside of the vehicle’s windshield.
A transponder allows trucks to bypass weigh stations by electronically verifying a truck's legal weight, safety rating, and credentials.
Here is how the transponder works :
After receiving a red or green light on the transponder, the light will continue to flash intermittently for approximately 15 minutes. There is nothing wrong with the transponder. This is built in protection for the carrier in case the driver is pulled over by law enforcement. The transponder signal allows the officer to verify the signal that was transmitted by the database.
To obtain an application, call 1-888-877-8567 or download an application
You will need to submit:
Once the application has been accepted, you will receive the transponder(s) in the mail.
A black/white label will be attached to each transponder. This label identifies the license plate number of the vehicle the transponder is assigned to.
The transponder is designed to be mounted inside the cab, on the windshield where the driver can observe the transponder without removing his/her eyes from the road. The device should be mounted no more than 6 inches from the top or bottom of the windshield, and 2 inches to the right of center. (Please refer to Title 49 CFR Subpart D Section 393.60 (e) (1))
The red and green LED lights are located along the left side of the transponder when mounted on the windshield. When a signal is received, the red or green LED flashes and an audible signal will be heard: