The SR-237 Express Lanes run eastbound from Mathilda Avenue in Sunnyvale to Dixon Landing Road in Milpitas and westbound from McCarthy Boulevard in Milpitas to Java Drive in Sunnyvale. The lanes operate Monday – Friday from 5 a.m. to 8 p.m. Carpool occupancy is 3 or more people.

The I-680 Contra Costa Express Lanes run southbound from Marina Vista Avenue in Martinez to Alcosta Boulevard in San Ramon and northbound from Alcosta Boulevard in San Ramon to Livorna Road in Walnut Creek. The lanes operate Monday – Friday from 5 a.m. to 8 p.m. Carpool occupancy is 2 or more people.