To receive toll discounts in Bay Area express lanes, eligible clean air vehicles must use a FasTrak Flex or FasTrak CAV toll tag.
A FasTrak Flex toll tag is required for eligible CAVs to travel toll free in the I-580 and I-680 Contra Costa express lanes. The FasTrak Flex toll tag works like a standard FasTrak toll tag but has a three-position switch to indicate the number of occupants in the vehicle. A CAV decal is not required to get a FasTrak Flex toll tag.
For more information about the FasTrak Flex toll tag, please visit https://www.bayareafastrak.org/en/guide/doINeedFlex.shtml
Solo drivers in eligible CAVs will receive a 50% discount off the toll if they use a FasTrak CAV toll tag. The FasTrak CAV toll tag is the only transponder that will communicate the discounted toll rate to roadside toll equipment. Clean air vehicles with two or more people can travel toll free as a carpool, but must use a FasTrak Flex or FasTrak CAV toll tag.
Bay Area Express Lanes are specially-designated freeway lanes that give solo drivers the choice to pay a toll for a more reliable trip. Eligible clean air vehicles can travel in these lanes for free or at a discounted rate with a FasTrak Flex or a FasTrak CAV toll tag. Express lanes are available on I-580, I-680 Contra Costa, I-680 Sunol, and SR-237.
Solo drivers in eligible CAVs pay a toll in the SR-237 express lanes. Drivers will receive a 50% discount if they use the FasTrak CAV toll tag. Solo drivers in eligible clean air vehicles using a standard FasTrak toll tag or FasTrak Flex in the SR-237 express lanes will be charged the full toll.
Carpools of two or more occupants can travel toll free.
Set the switch on the FasTrak Flex or FasTrak CAV toll tag to match the number of occupants in the vehicle.
Eligible clean air vehicles can travel in the express lanes toll free no matter how many passengers are in the vehicle, but must use a FasTrak Flex or FasTrak CAV toll tag.
The FasTrak Flex toll tag should be switched to position 2 or position 3+.
The FasTrak CAV toll tag should be switched to match the number of occupants in the vehicle.
Eligible clean air vehicles can travel in the express lanes toll free no matter how many passengers are in the vehicle. A FasTrak toll tag is not necessary.
If you have a standard FasTrak toll tag, place it in the provided Mylar bag to avoid being charged.
If you have a FasTrak Flex toll tag, set it in position 2 or position 3+ to avoid being charged.
If you have a FasTrak CAV toll tag, set it to match the number of occupants.
For more information about Bay Area Express Lanes, visit https://511.org/driving/express-lanes
On the seven state-owned toll bridges, eligible CAVs may use the dedicated carpool lanes during designated carpool hours and receive the discounted toll no matter how many people are in the car. You must use the carpool lane and a FasTrak toll tag.
GOLDEN GATE BRIDGE: Clean air vehicles are not eligible for reduced tolls and may not use carpool lanes on the Golden Gate Bridge unless they meet the minimum passenger requirements for carpools and have a valid FasTrak toll tag.
For more information about bridge tolls, visit https://www.bayareafastrak.org/en/guide/bridgesParking.shtml
For more information about carpool lanes, visit https://www.bayareafastrak.org/en/howitworks/carpool.shtml
FasTrak CAV toll tags are only available online and a copy of your DMV-issued CAV Certificate is required.
A FasTrak CAV toll tag can only be used in the vehicle to which it is registered and can't be transferred to other vehicles. If you have more than one eligible clean air vehicle, you'll need to order a FasTrak CAV for each one. Eligibility for discounts will automatically expire when your clean air decal expires.
After your application has been processed, your FasTrak CAV toll tag will be mailed to you within 7-10 business days.
If you would prefer to pay by check, please download the account application. Mail the completed application with a check to:
Bay Area FasTrak
PO Box 26926
San Francisco, CA 94126
Applications without payment will not be processed. If your application is not approved, we will contact you to resolve the issue.
In-person service is available at the Customer Service Center. Cash, check, money order, or credit card is accepted at this location. Click here for hours and locations.
No. Your FasTrak account will not be opened until your application is approved. If there are any issues with your application, we will contact you to resolve them. If a FasTrak CAV toll tag cannot be issued to you, you have the option to open a FasTrak account and order a FasTrak Flex toll tag.
The buttons on this page are specific to applying for a FasTrak CAV toll tag for an eligible clean air vehicle.
Once your account is opened, you can order toll tags or add toll tags that you pick up at a retail store to your FasTrak account. Or, you can open a FasTrak account and order the toll tags you need and start using FasTrak right away. Then, using the “I have a FasTrak Account” button, order the FasTrak CAV toll tag for your eligible clean air vehicle.
Apply for a new FasTrak CAV toll tag and, if you no longer need your current FasTrak toll tag, you can return it the FasTrak Customer Service Center in person or by mail.