The I-680 Contra Costa Express Lane runs southbound from Martinez to San Ramon and northbound from San Ramon to Walnut Creek.
Hours of operation:
- MON-FRI, 5:00 AM to 8:00 PM
Carpool occupancy: 2 or more people
Solo drivers – You must have a standard FasTrak or FasTrak Flex toll tag (set to '1') to pay to use the lane.
2+ carpools, vanpools & motorcycles need a FasTrak Flex toll tag (set in the proper position) to travel toll free. Clean Air Vehicles must get a FasTrak CAV Tag and set it to the proper position. Solo-driver CAVs pay half-price tolls.