All drivers will need a FasTrak transponder to travel in the express lanes during operating hours (Monday through Friday, 5 a.m.-8 p.m.). Carpoolers with two or more occupants can travel toll-free with a FasTrak Flex. Express lanes will be open to all traffic outside of operating hours.
The I-680 Sunol Southbound Express Lane was first opened on September 20, 2010 when the High Occupancy Vehicle (HOV) lane was converted to a High Occupancy Toll (HOT) / express lane along southbound I-680 from south of State Route 84 to north of State Route 237. The conversion required additional roadway widening and installation of tolling equipment throughout the project corridor.
Beginning in 2018, work began to construct a new northbound express lane on I-680 between Auto Mall Parkway and SR-84 and to change the access configuration of the southbound lane to allow drivers to enter and exit more freely. Tolling operations were suspended on the southbound lane in August 2020 to allow for construction. The new northbound lane and the southbound lane were opened to high-occupancy vehicle traffic in October 2020. Tolling operations on the northbound and southbound I-680 Sunol Express Lanes resumed on March 31, 2023.