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Toll Tags

FasTrak Toll Tags

FasTrak drivers must have a FasTrak-issued toll tag mounted to the vehicle’s windshield to pay the lowest tolls at Bay Area bridges and express lanes.

FasTrak Toll Tags

FasTrak Flex

FasTrak Flex is a special toll tag required for carpools, motorcycles and eligible clean air vehicles for toll-free travel in the Interstate 580, Interstate 680 Contra Costa and State Route 237 express lanes.

All carpools are required to have a FasTrak Flex toll tag to travel in express lanes toll free, except in the Interstate 680 Sunol express lanes. There, carpools may carry a FasTrak Standard toll tag but should place it in its Mylar® bag to avoid being charged the non-carpool toll.

FasTrak <em>Flex</em>


FasTrak Flex toll tags work just like FasTrak Standard toll tags but have a three-position switch that can be adjusted to signal whether you are traveling as a carpool or alone. It is required for most Bay Area express lanes.

FasTrak CAV

FasTrak CAV is a special toll tag—issued only to eligible clean air vehicles (CAVs)—that qualifies the vehicle for free or reduced tolls.

The FasTrak CAV toll tag works at all toll bridges and in all Bay Area express lanes. It can also be used to pay for parking at San Francisco International Airport.

The FasTrak CAV toll tag has a three-position switch to signal whether you are traveling alone or as a carpool. With a FasTrak CAV toll tag set to the correct position, carpools travel toll free.

The FasTrak CAV toll tag may be used for discounted single-occupant CAV travel in the State Route 237 express lanes. The FasTrak CAV toll tag is the only toll tag that will communicate the correct discount to roadside equipment. Single-occupant CAV drivers will need a FasTrak CAV toll tag to receive a 50% discount off the toll.

FasTrak CAV

Paying Tolls Without FasTrak

  • Paying with Cash: You can pay with cash in designated “CASH” lanes on all Bay Area bridges except the Golden Gate Bridge.

  • Paying on the Golden Gate Bridge: To use the Golden Gate Bridge without FasTrak, you may set up a license plate or a short-term, one-time payment account that allows you to pay your toll with a credit card, cash, check or money order at a FasTrak retail location. If you choose not to set up an account, you will receive toll invoices for each Golden Gate Bridge crossing. Invoices must be paid within 21 days or they will become toll violations and could result in additional penalties and fees. Learn more about setting up a license plate or one-time payment account. Learn more about Golden Gate Bridge invoices.

  • Traveling Toll Free: You can travel toll free on Bay Area express lanes if you are a qualifying carpool, eligible clean air vehicle or motorcycle. To learn more about how to use express lanes without a toll, visit our Express Lanes page.

Mounting a Toll Tag

You must mount your toll tag on the inside of your vehicle’s windshield. It is illegal to hold up a toll tag with your hand while driving through a tollbooth. To ensure proper toll tag performance, it must be installed properly using the following steps:

  1. Clean the mount area on your windshield with isopropyl (rubbing) alcohol and allow it to dry completely.
  2. Remove the plastic tape from the back of the Velcro® mounting strips.
  3. Position the toll tag horizontally on the windshield as illustrated.
  4. Press the toll tag firmly against glass.
  5. Easy account set-up and maintenance
    • (A)  Preferred mounting position (behind rear-view mirror): position toll tag horizontally, 2 inches below top edge of the windshield, behind mirror.
    • (B)  Alternate mounting position (lower left or right side): position toll tag at least 2 inches away from side and bottom of windshield edge.

Note: Specific vehicle models may require an external license plate-mounted toll tag. View the FAQ topic on toll transponders or call the Bay Area FasTrak Customer Service Center at 877-BAY-TOLL (877-229-8655) for more information.

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