Carpool & Express Lanes

Carpool lanes, also known as High Occupancy Vehicle (HOV) lanes, are reserved for carpools, vanpools, buses, motorcycles, and eligible clean air vehicles during designated commute hours. Other vehicles are not allowed. HOV lane hours and carpool occupancy requirements vary by location. Outside of commute hours, these lanes are open to general traffic.

Express Lanes allow vehicles to pay full or discounted tolls, or travel toll-free depending on the lane’s operating requirements, to bypass traffic. Toll rates adjust dynamically, increasing with heavier traffic and decreasing when traffic is lighter.

View Carpool Lanes on the Interactive Map

As of January 1, 2026 the carpool requirements have changed on all Bay Area bridges except the Bay Bridge and Golden Gate Bridge. Visit GetFasTrak.org learn more about the new carpool rules.

Express Lanes

Toll Policies and FasTrak Rules for Each Bay Area Express Lane
Express LaneToll PolicyFasTrak Rule
I-680 Contra Costa 2+ FreeFasTrak Flex Required
I-580 2+ FreeFasTrak Flex Required
SR-237 3+ Free; 2-person Pay Half-Price TollsFasTrak Flex Required
I-880 3+ Free; 2-person Pay Half-Price TollsFasTrak Flex Required
US-1013+ Free; 2-person Pay Half-Price TollsFasTrak Flex Required
I-680 Sunol2+ FreeFasTrak Flex Required

Carpool Lanes

Showing 40 of 49 transit agencies
Occupancy: 2+

Montague Expressway Westbound

Details
  • Milpitas Blvd (Milpitas) to Mission College Blvd (Santa Clara)
  • 2+ people per vehicle & other eligible vehicles
Hours
  • MON-FRI
    -
Show on Map
Occupancy: 2+

San Tomas Expressway Northbound

Details
  • Bud Ave (San Jose) to Scott Blvd (Santa Clara)
  • 2+ people per vehicle & other eligible vehicles
Hours
  • MON-FRI
    -
Show on Map
Occupancy: 2+

San Tomas Expressway Southbound

Details
  • Scott Blvd (Santa Clara) to Bud Ave (San Jose)
  • 2+ people per vehicle & other eligible vehicles
Hours
  • MON-FRI
    -
Show on Map
FasTrak Flex Required
Bridge Approach
Occupancy: 3+

SR-160 Eastbound Antioch Bridge Approach

Details
  • North of Oakley Road (Antioch) to Eastbound toll booth
  • 3+ people per vehicle & other eligible vehicles to receive discount, set Flex tag to "3"
  • 2 persons allowed but must pay full toll, set Flex tag to "2"
  • FasTrak Flex toll tag required in the carpool lane at the toll plaza
  • View Bridge Tolls on the Antioch Bridge
Hours
  • MON-FRI
    -
  • MON-FRI
    -
Show on Map
FasTrak Required
Express Lane
Occupancy: 3+

SR-237/I-880 East & Northbound Express Lane

Details
  • Mathilda Ave (Sunnyvale) to Dixon Landing Rd (Milpitas) (www.expresslanes.511.org)
  • 3+ people per vehicle & other eligible vehicles
  • FasTrak toll tag required in the carpool lane at the toll plaza
Hours
  • MON-FRI
    -
Show on Map
FasTrak Required
Express Lane
Occupancy: 3+

SR-237/I-880 South & Westbound Express Lane

Details
  • Dixon Landing Rd (Milpitas) to N. Fair Oaks Ave (Sunnyvale) (www.expresslanes.511.org)
  • 3+ people per vehicle & other eligible vehicles
  • FasTrak toll tag required in the carpool lane at the toll plaza
Hours
  • MON-FRI
    -
Show on Map
Occupancy: 2+

SR-4 Eastbound - Concord to Pittsburg

Details
  • Port Chicago Hwy (Concord) to Loveridge Rd (Pittsburg)
  • 2+ people per vehicle & other eligible vehicles
Hours
  • MON-FRI
    -
Show on Map
Occupancy: 2+

SR-4 Westbound - Pittsburg to Concord

Details
  • Loveridge Rd (Pittsburg) to Port Chicago Hwy (Concord)
  • 2+ people per vehicle & other eligible vehicles
Hours
  • MON-FRI
    -
Show on Map
FasTrak Flex Required
Bridge Approach
Occupancy: 2+

SR-84 Westbound - Dumbarton Bridge Approach

Details
  • Newark Blvd (Newark) to Dumbarton Bridge Toll Booth
  • 2+ people per vehicle & other eligible vehicles to receive discount, set Flex tag to "3"
  • 2 persons allowed but must pay full toll, set Flex tag to "2"
  • FasTrak Flex toll tag required in the carpool lane at the toll plaza
  • View Bridge Tolls on the Dumbarton Bridge
Hours
  • MON-FRI
    -
  • MON-FRI
    -
Show on Map
Express Lane
Occupancy: 2+

SR-85 Northbound - Mountain View to San Jose

Details
  • From Moffett Blvd (Mountain View) to 101 Northbound (San Jose)
  • 2+ people per vehicle & other eligible vehicles
Hours
  • MON-FRI
    -
  • MON-FRI
    -
Show on Map