Frequently Asked Questions
FasTrak Transponder
Do I need a switchable transponder?
You will need a FasTrak® Flex switchable transponder to travel on the 405 Express Lanes to receive a carpool discount.
Drivers must have a FasTrak® Flex switchable transponder set to the correct occupancy. FasTrak® Flex switchable transponder can be purchased through the 405 Express Lanes for $15.
If you plan to travel on the Los Angeles Metro Express Lanes, Express Lanes in the Bay Area, 15 Express Lanes in Riverside County and wish to receive a discount for carpooling, you will also need a FasTrak® Flex® switchable transponder.
Didn’t find the answer that you were looking for?
Contact Customer Service using the options below.
In Person
405 Express Lanes Customer Service Center
Hours: 8:00 a.m. - 6:00 p.m
Monday through Friday
OCTA Store
Hours: 8:00 a.m. - 5:00 p.m
Monday through Friday
Phone
Mail
Mailing Address
405 Express Lanes
P.O. Box 2177
Costa Mesa, CA 92628
P.O. Box 2177
Costa Mesa, CA 92628