About Transponders

The 405 Express Lanes operates with a state-of-the-art electronic toll collection system which requires a FasTrak® transponder.

The transponder-based system allows travel without stopping to pay a toll at a toll booth. FasTrak® transponders are required for customers to use the express lanes.

Transponders

The 405 Express Lanes offers three types of transponders. Based on your vehicle type, either an interior- or exterior-mounted FasTrak® sticker transponder will be provided with your account at no charge. Take advantage of carpool discounts, a switchable transponder is required and can be purchased through the 405 Express Lanes for $15.

If you have an existing transponder and an active account from any toll agency in California, you can use your FasTrak® transponder on any toll road in California.

FasTrak Sticker

Transparent sticker attaches to the inside of your windshield
Sticker is free for 405 express lanes account holders

FasTrak Exterior Mounted

Transparent sticker attaches to the front headlight of your vehicle
Can be used by motorcyclists to drive the 405 Express Lanes for free
Sticker is free for 405 Express Lanes accountholders

FasTrak Flex® Switchable

Can be used by qualifying drivers to receive a carpool discount
Includes a switch that allows the driver to indicate the number of occupants in the vehicle
Can be purchased through the 405 Express Lanes for $15

How to Install

FasTrak Sticker Transponder

The FasTrak Sticker Transponder is for use inside your vehicle.

Step 1

Prep the surface

Clean mounting area inside of windshield and let dry.

Step 2

Place sticker behind rearview mirror

Peel backing and affix to inside windshield, smoothing the sticker flat or pressing the switchable transponder’s adhesive strips firmly against the glass behind the rearview mirror.

FasTrak Interior Mounted Sticker Transponder

Place sticker behind rearview mirror.

Exterior Transponder

The exterior transponder is for motorcyclists and vehicles with metalized windshields.

Step 1

Prep the headlight

Clean and dry the vehicle headlight in the chosen tag placement area.

Step 2

Carefully peel the sticker

Carefully remove the transponder sticker tag by peeling the backing down from the tag. Minimize contact with the adhesive of the backing, and avoid sharply bending or folding the tag.

Step 3

Place sticker over headlight of car or motorcycle

Locate a position on the headlight at least 2 inches from any metal and smoothly press the transponder against the headlight surface working from on end to avoid tapping air bubbles.

Exterior Mounted Transponder

Place sticker over headlight of car or motorcycle.

FasTrak Flex® Switchable Transponder

The FasTrak Flex® Switchable Transponder is for use inside your vehicle.

Step 1

Prep the surface

Clean mounting area inside of windshield and let dry.

Step 2

Using the Dual Lock fastener

Peel off the protective liner from each piece of Dual Lock on the back of the transponder. Minimize contact with the adhesive backing.

Step 3

Positioning the transponder

Press the sticky side of the transponder to the lower left of the interior windshield. Push firmly.

FasTrak Flex Switchable Transponder

Place on the lower left of the interior windshield.

FasTrak Sticker Transponder

The FasTrak Sticker Transponder is for use inside your vehicle.

Step 1

Prep the surface

Clean mounting area inside of windshield and let dry.

Step 2

Place sticker behind rearview mirror

Peel backing and affix to inside windshield, smoothing the sticker flat or pressing the switchable transponder’s adhesive strips firmly against the glass behind the rearview mirror.

FasTrak Interior Mounted Sticker Transponder

Place sticker behind rearview mirror.

Exterior Transponder

The exterior transponder is for motorcyclists and vehicles with metalized windshields.

Step 1

Prep the headlight

Clean and dry the vehicle headlight in the chosen tag placement area.

Step 2

Carefully peel the sticker

Carefully remove the transponder sticker tag by peeling the backing down from the tag. Minimize contact with the adhesive of the backing, and avoid sharply bending or folding the tag.

Step 3

Place sticker over headlight of car or motorcycle

Locate a position on the headlight at least 2 inches from any metal and smoothly press the transponder against the headlight surface working from on end to avoid tapping air bubbles.

Exterior Mounted Transponder

Place sticker over headlight of car or motorcycle.

FasTrak Flex® Switchable Transponder

The FasTrak Flex® Switchable Transponder is for use inside your vehicle.

Step 1

Prep the surface

Clean mounting area inside of windshield and let dry.

Step 2

Using the Dual Lock fastener

Peel off the protective liner from each piece of Dual Lock on the back of the transponder. Minimize contact with the adhesive backing.

Step 3

Positioning the transponder

Press the sticky side of the transponder to the lower left of the interior windshield. Push firmly.

FasTrak Flex Switchable Transponder

Place on the lower left of the interior windshield.

Questions about transponders?

View transponder FAQs