|I-680 Southbound||5am to 8pm||Monday through Friday|
|SR-237 - Westbound||5 - 10 am and 3 - 7 pm|
|SR-237 - Eastbound||5 - 9 am and 3 - 7 pm|
|I-580 - Westbound||5am - 8 pm|
|I-580 - Eastbound||5am - 8 pm|
Eligible CAVs should use a FasTrak CAV toll tag in the SR-237 express lanes. Always set the switch to match the number of occupants in the vehicle.
Solo drivers in eligible CAVs do not qualify as a carpool in the SR-237 express lanes and must pay a toll. If using a FasTrak CAV toll tag, set the switch to position 1 and a 50% discount will be applied. The FasTrak CAV toll tag is the only one that will communicate the discounted toll to roadside equipment. If using a FasTrak Flex toll tag, the switch should still be set to position 1, however you will be charged the full toll.
Carpools and motorcycles may travel toll free, but must use a FasTrak Flex or FasTrak CAV toll tag. Use position 2 if there are two people in the vehicle. Use position 3+ if there are three or more people in the vehicle. Motorcycles should also use position 3+.
You must use a FasTrak Flex toll tag set to position 2 or position 3+ to travel toll-free.
If you have a FasTrak CAV toll tag, set the switch to match the number of people in the vehicle.
You do not need a toll tag for toll-free travel as a carpool, motorcycle or eligible clean air vehicle. If you have a standard FasTrak toll tag, put it into the Mylar bag to avoid detection. If you have a FasTrak Flex toll tag, set it to position 2 or 3+ (motorcycles should use position 3+). If you are using a FasTrak CAV toll tag, set the switch to match the number of occupants in the vehicle.
To learn more about which vehicles qualify as toll-exempt vehicles, click here.
The FasTrak Flex toll tag is required for toll-exempt vehicles to travel toll-free in the I-580, I-680 Contra Costa, and SR-237 express lanes.
The FasTrak CAV toll tag is only required for eligible CAVs travelling in the SR-237 express lanes. It is the only toll tag that will communicate the correct discount to roadside toll equipment when traveling as a single occupant vehicle.
Both toll tags allow you to pay tolls when you’re traveling alone and to travel toll free when you qualify as a carpool.