Toll Tags

Carpools, vanpools, motorcycles and eligible clean air vehicles (CAVs) need a FasTrak Flex toll tag to drive toll-free in the I-580, I-680 Contra Costa, and SR-237 express lanes*. FasTrak Flex toll tags work just like a regular FasTrak toll tag at all other FasTrak toll facilities, including the eight Bay Area toll bridges and the parking garages at the San Francisco International Airport. If you do not use express lanes as a carpool, vanpool motorcycle or eligible CAV, a standard FasTrak toll tag will serve all your needs. The vast majority of FasTrak users only need a standard FasTrak toll tag.

*Eligible CAVs traveling the SR-237 express lanes should use a FasTrak CAV toll tag. The FasTrak CAV toll tag is similar to FasTrak Flex, but is required for eligible CAVs who wish to receive the 50% discount when traveling as a single-occupant vehicle in the SR-237 express lanes. It is the only transponder that will communicate the correct discount to roadside toll equipment.

You need a FasTrak Flex toll tag if you are a carpool, vanpool, motorcycle or other toll-exempt vehicle that will use the I-580, I-680 Contra Costa, or SR-237 express lanes. Otherwise, your standard toll tag will work in all express lanes and other FasTrak facilities.

NOTE FOR CLEAN AIR VEHICLES TRAVELING IN SR-237 EXPRESS LANES

If you are an eligible CAV using the SR-237 express lanes, you must have a FasTrak CAV toll tag to receive the 50% discount when traveling as a single occupant. Solo drivers in eligible CAVs using a FasTrak Flex or standard FasTrak toll tag in the SR-237 express lanes will be charged the full toll.

The switch positions are used to tell the toll system the number of occupants in the vehicle so that the correct toll amount is collected and to assist with CHP enforcement of express lane use. Remember to set the switch prior to starting your trip.

FASTRAK FLEX

Express Lanes

When set in position 1, the toll system will deduct the full toll from your account. When set in position 2 or 3+, no toll will be deducted from your account, but the system will record your trip and will highlight your toll-free status to CHP for proper enforcement of the express lanes.

Toll Bridges and Parking Garages

Regardless of which position the toll tag is switched to, the system will deduct the full toll from your account. At toll bridges, you must use the designated carpool lanes to receive discounted carpool rates.*

FASTRAK CAV**

Express Lanes

SR-237 Express Lanes

When set in the position 1, the toll system will deduct 50% of the toll amount from your account. When set in position 2 or 3+, no toll will be deducted from your account, but the toll system will record your trip and will highlight your toll-free status to CHP for proper enforcement of the express lanes.

I-580, I-680 Contra Costa, and I-680 Sunol Express Lanes

Regardless of which position the toll tag is switched to, no toll will be deducted from your account, but the system will record your trip and will highlight your toll-free status to CHP for proper enforcement of the express lanes.

Toll Bridges and Parking Garages

Regardless of which position the toll tag is switched to, the system will deduct the full toll from your account. At toll bridges, you must use the designated carpool lanes to received discounted carpool rates.*

*On the Golden Gate Bridge, clean air vehicles are not eligible for reduced tolls and may not use carpool lanes unless they meet the minimum passenger requirements for carpools.

**Eligibility for clean air vehicle discounts will automatically expire when your clean air decal expires.

Standard FasTrak toll tags and the FasTrak Flex toll tags are treated the same way - free! There are no fees to open or to maintain a FasTrak account, regardless of the type of toll tag you use. As toll tags are leased, refundable security deposits do apply. The security deposit is $20 per toll tag. The deposit is refunded to you when you close your account and return the toll tag in good condition. If you maintain a valid credit card on your account, the security deposit for up to three toll tags is waived.

FasTrak is not a "pay as you go" system. You deposit money into your FasTrak account and each time you use your tag, the toll amount is deducted from your account balance. An initial balance is required upon account opening so that you have a prepaid balance from which tolls can be deducted.

To open an account using a valid credit card, an initial prepaid balance of $25 per toll tag is collected. To open an account using cash or a check deposit, an initial prepaid balance of $50 per toll tag plus a $20 per toll tag deposit is collected. The deposit is refunded to you when you close your account and return the toll tag in good condition. Any remaining balance on your account will also be refunded to you upon account closure.

FasTrak Flex toll tags are available from the FasTrak Customer Service Center. Order them online at www.bayareafastrak.org, over the phone with a Customer Service Representative at 1-877-BAY-TOLL (1-877-229-8655), or pick one up at the in-person counter at the Customer Service Center.


FasTrak Flex toll tags can be used at any toll facility displaying the FasTrak logo in California. In the Bay Area, FasTrak can be used at all eight toll bridges, express lanes and at the San Francisco International Airport parking garages. FasTrak can also be used at all toll roads in Southern California.

Bay Area Toll Facilities

  • Antioch, Bay Bridge, Benicia-Martinez, Carquinez, Dumbarton, Golden Gate, Richmond-San Rafael and San Mateo-Hayward bridges
  • SR-237, I-580, I-680 Sunol and I-680 Contra Costa express lanes
  • San Francisco International Airport Parking

Southern California Toll Roads

  • SR-73, SR-133, SR-241 and SR-261 Toll Roads
  • I-15 Express Lane
  • I-10 and I-110 Metro ExpressLanes
  • 91 Express Lanes
  • SR 125 South Bay Expressway

Please be advised that certain facilities require a properly switched FasTrak Flex toll tag to qualify for toll-free travel. All FasTrak tag types can be used for regular toll collection at any facility displaying the FasTrak logo.

SR-237 Express Lanes

Yes, a FasTrak Flex or FasTrak CAV toll tag is required to qualify for toll-free travel in the SR-237 express lanes as a carpool. To qualify as a carpool, a vehicle must have two or more passengers. Both tags have a three-position switch that must be set in position 2 or 3+, depending on the number of people in the vehicle.

Solo drivers in eligible clean air vehicles (CAVs) no longer qualify as a carpool in the SR-237 express lanes and must pay a toll. Solo drivers in eligible CAVs with orange, purple, or red clean air decals will receive a 50% discount on the toll if they use a FasTrak CAV toll tag. The FasTrak CAV toll tag is the only toll tag that will communicate the correct discount toll rate to roadside toll equipment. Single-occupant CAVs using a standard FasTrak or FasTrak Flex toll tag set in position 1 will be charged the full toll.

I-680 Sunol Express Lanes

Currently, no. Carpools, vanpools, eligible clean air vehicles, motorcycles and commute buses do not require a FasTrak Flex toll tag to travel toll free in these express lanes. If you have a standard FasTrak toll tag in your vehicle, it must be placed in your Mylar bag before travel to avoid toll charges. If you have a FasTrak Flex or FasTrak CAV toll tag in your vehicle, be sure it is set to the proper setting (position 2 or 3) when traveling in the I-680 Sunol express lanes.

To receive carpool discounts at toll bridges, you are required to use the designated carpool lane with a valid FasTrak toll tag – a standard FasTrak, FasTrak Flex or FasTrak CAV toll tag will work.