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FasTrak® and FasTrak Flex® Toll Tags

All vehicles using the I-580 Express Lanes are required to carry an active FasTrak or FasTrak Flex toll tag.

  • Carpools and those eligible to use HOV lanes can ride toll-free with a FasTrak Flex tag set to 2 or 3+.

  • Solo drivers pay a fee to use the express lanes during operating hours (M-F 5am-8pm). Solo drivers must either have an active FasTrak toll tag or FasTrak Flex toll tag set to 1. The correct toll will be automatically deducted from your account. 

Note: On the I-680 Express Lane over the Sunol Grade, carpoolers may either use the Flex tag or no toll tag, or place their standard toll tag in a mylar bag. Solo drivers on the I-680 Express Lane are required to use either a Flex set to 1 or a standard tag to pay the toll.


STEP 1                 Order Your Toll Tag or Purchase one at a Retailer. If you already have an account and want to order a Flex tag, log in to your account here.
STEP 2 Set up Your Account
STEP 3 Mount Your Toll Tag
  •  See information here on how to mount your toll tag.
STEP 4 Use the Express Lanes
  • The express lanes operate Monday-Friday 5am-8pm, including holidays. Nights and weekends they are open to all with no toll tag requirements.
  • In the event of major incidents, the express lanes may be "Open to All." When this occurs they are open to all with no toll tag requirements. Toll tags will beep, but you will not be charged.

Frequently Asked Questions

Q: How do I exchange my standard toll tag for a Flex tag?

A: If you would like to replace a toll tag that is no longer working or would like to replace your toll tag with a different type, you can call the Customer Service Center at 877-BAY-TOLL (877-229-8655) - have your toll tag accessible when you call.

Please note: Toll tag security deposits apply to all toll tags, including replacement toll tags. When the toll tag you are returning is received by the Customer Service Center, your security deposit balance will be adjusted accordingly.

Alternatively, you can simply order a Flex tag online, or get one at a Costco, Safeway or Walgreens store in the Tri-Valley (see locations here) and then add it to your existing account. You are welcome to mail back your standard tag, but it isn't required. If this will be your fourth toll tag, you will be charged a $20 deposit, but this will be refunded when you return a tag. You can call the FasTrak Customer Service Center to request a pre-paid envelope to return your toll tag at 877-BAY-TOLL (877-229-8655).

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