X
Express Lanes Hours Days
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

X
BAY AREA EXPRESS LANES
Photo by Noah Berger
Express lanes let you enjoy more reliable travel as you bypass traffic congestion. FasTrak allows solo drivers to pay a toll to drive in express lanes. Carpools, motorcycles, clean air vehicles (CAVs) and other toll-exempt vehicles can travel toll free or at a discount in all express lanes, but need a FasTrak Flex or FasTrak CAV toll tag.
Using Bay Area Express Lanes
Look for the dashed or broken lines. These are lane openings where you are allowed to enter or leave an express lane.
Some highway exits may not be available when driving in an express lane. Check roadside signs for details.
Do not cross the double white lines to enter or leave an express lane. Crossing them is a traffic violation.

I-580 Express Lanes — Some highway exits not available
Look at roadside signs for information or see the map here to plan ahead.
I-580 Express Lanes Map

Westbound
If you need to access I-680 or to exit at Dougherty Road, leave the express lane before Hacienda.

Eastbound
If you need to exit at Santa Rita Road or Fallon/El Charro Road, do not enter the express lane.
TIP
Solo Drivers Pay a Toll
The toll amount varies
The toll prices may go up or down depending on the level of traffic congestion.
You'll know the toll in advance
Look for the overhead sign that states the toll amount before entering the express lane. It shows the price to travel through the next zone and the price to travel through to the end of the express lane.
Zone pricing
You will be charged based on the tolls displayed when you first enter the express lane. If you exit the express lane before the final posted zone, you will be charged a lower price.

For more information on pricing and signs, click here.
Stay in the lane — the toll stays the same
If you briefly leave and then re-enter an express lane, FasTrak will charge you a single toll as though you travelled continuously in the lane. It is unlikely that weaving in and out of the express lane will decrease your toll.
TIP
Carpools, Motorcycles and Clean Air Vehicles
Use FasTrak correctly for toll-free or discounted travel in express lanes as a carpool, motorcycle or eligible clean air vehicle (CAV).
In the SR-237 Express Lanes

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+.

Clean Air Vehicle
In the I-580 and I-680 Contra Costa Express Lanes

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.

I-580 and I-680 Contra Costa
In the I-680 Sunol Express Lanes

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.

FasTrak Flex and FasTrak CAV Toll Tags

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.

Choosing a FasTrak Toll Tag
More About Bay Area Express Lanes
Learn more about using express lanes, where they are, and why they are important.
I-580 Express Lane chutes
The Westbound "San Ramon Road Chute"
Going west, it starts at Hacienda Road. You cannot enter or leave the Express Lane until San Ramon Road. If you are travelling in the Express Lane and need to access I-680 or to exit at Dougherty Road, leave the Express Lane before Hacienda. Click For Map.
The Eastbound "Airway Road Chute"
Going east, it starts at Hacienda Road. You cannot leave the Express Lane to exit the highway until Airway Road. If you need to exit at Santa Rita Road or Fallon/El Charro Road, do not enter the eastbound Express Lane. Click For Map.
TIP
Express Lanes FAQs
FasTrak Flex Toll Tag
Using Carpool Lanes
I-580 Carpools
I-680 Contra Costa Carpools
Bay Area Express Lanes