How to choose the right toll tag

FasTrak Flex and FasTrak CAV are the two main types of toll tags. Some vehicles will require an exterior toll tag depending on the model or windshield. All three FasTrak toll tags can be used on all Bay Area toll bridges and express lanes.

FasTrak Flex

Most vehicles will use a FasTrak Flex toll tag. They have a three-position switch that can be adjusted to signal whether you are traveling as a carpool or alone. Carpools and motorcycles receive toll discounts in bridge carpool lanes and express lanes.

FasTrak CAV

The FasTrak CAV is a special toll tag issued only to clean air vehicles (CAVs) that are eligible for free or reduced tolls. Like the FasTrak Flex toll tag, the FasTrak CAV also has a three-position switch to signal whether you are traveling alone or as a carpool. The FasTrak CAV toll tag is required for discounted single-occupant CAV travel in express lanes.

Exterior Toll Tag

An externally-mounted (or exterior) toll tag is required for many older model vehicles, or for vehicles with a design or added obstruction that could prevent tolling equipment from detecting an internally-mounted toll tag. Because exterior toll tags do not have a switch to indicate how many people are riding in the car, they are not eligible for discounts in express lanes. Many commercial vehicles and some older vehicle models may require an exterior toll tag. You can call FasTrak Customer Service at 877-BAY-TOLL (877-229-8655) to determine if your vehicle may need an exterior toll tag.