Frequently Asked Questions

The Express Lanes are divided into seven payment zones with overhead signs that show the price to travel in each zone. The new system is able to manage capacity in the lanes by using the supply-and-demand concept. An algorithm adjusts the price to drive in each zone based on traffic conditions with costs highest during peak traffic.

Readers at several locations along the Express Lanes detect in-vehicle Express Passes as they travel through the zones. After you exit the Express Lanes, your account will be charged the price in effect when you first entered each zone.

An Express Pass is a small radio frequency transponder that you mount to your windshield behind the rear-view mirror. Readers along the Express Lanes detect the Express Pass as you travel through the Express Lanes.
Each user will set up an online account with a $25 pre-paid balance and a credit card on file. Each use of the lane will be deducted from your balance. Your credit card is automatically charged $25 whenever your account balance falls below $10. Each $25 charge will show on your credit card statement. It takes three to four hours for a transaction to show up on your account.
Passes cost $9.65 plus tax and shipping.
You can set up an account online or by calling 855-813-9127. You must purchase an Express Pass for $9.65 and deposit a minimum of $25 per transponder when you set up your account.
You can expect to receive your Express Pass seven to ten business days after you open your account.
Pricing will range from 25 cents to $2 per zone depending on the level of traffic, with costs highest during peak traffic times.

The Utah Transportation Commission and the Utah State Legislature approved the minimum and maximum rates of 25 cents and $2. Rates are based on traffic analysis and similar programs in other states. The maximum rate may be adjusted with permission from the Utah Legislature and Transportation Commission depending on public demand.

As always, carpoolers, buses, C Decal vehicles and motorcycles are the first priority in the Express Lanes and continue to use them without charge.

Yes. Express Pass customers are responsible for a $2.50 per month administrative cost to maintain an Express Pass account.

These costs affect account holders in different ways depending on how frequently they use their Express Pass each month.

  • Frequent Users (Express Pass holders whose usage of the Express Lanes generates tolls of at least $2.50 per month): Frequent users, whose toll usage meets or exceeds $2.50 per month, will not pay an additional cost.
  • Infrequent Users (Express Pass holders whose usage of the Express Lanes generates tolls less than $2.50 per month): Infrequent users will be charged the difference between their tolls paid monthly and $2.50. For example, a user who pays $2.00 in tolls in a given month will be charged an additional $0.50.
  • The administrative costs will be deducted from your account balance on the 2nd day of each month.
    No. The charge for administrative costs are per account, not per Express Pass.
    Call customer service and they can close your account over the phone.
    Customer Service: 855-813-9127, Monday – Friday, 7:00 a.m. – 5:30 p.m.
    Or send an email requesting that your account be closed. (You may be contacted to verify or update your account information.)
    Account balances will be reimbursed to valid credit or debit cards within 3-5 business days. Ensure that the credit card on your account is valid. You can update your account online or by contacting customer service at 855-813-9127, Monday – Friday, 7:00 a.m. – 5:30 p.m.
    "Yes. The Express Pass may be moved from one vehicle to another. We recommend that you purchase an additional holders with new transponders. The older style transponders with suction cups will not work with the newer holders.
    No. If you have an Express Pass in your vehicle but are carpooling, you can move the slider to the "OFF" or "HOV" position so that you are not charged. You do not need a pass if you only use the lanes when you carpool.
    A carpool constitutes two or more people in a vehicle.
    Carpoolers, buses, motorcycles, emergency vehicles and C Decal vehicles are the priority in the Express Lanes and may continue to use them without charge. Solo drivers may fill any remaining space for a fee.

    Trailers and vehicles with a gross vehicle weight of more than 12,000 pounds are not allowed in the Express Lanes. Vehicles over 12,000 pounds are also not allowed in the adjacent passing lane.

    Yes. The Express Lanes are for carpoolers first but until carpoolers fully use the lanes, solo drivers may pay a fee to use the remaining capacity. The new pricing system will allow UDOT to maintain speeds of around 55 mph to help motivate drivers to carpool.
    More solo drivers will have the opportunity to use the Express Lanes when they need it most and to pay only when they use them. Whether you commute on I-15 regularly or are occasionally running late, you have the option to use the Express Lanes.

    Higher speeds in the Express Lanes help drivers have a more predictable commute. Drivers save an average of 10 minutes when they drive the length of the Express Lane during peak traffic times. Maintaining higher speeds in the Express Lanes encourages carpooling, which is the first priority of the lanes.

    The new system will ensure that the lanes carry their maximum capacity, freeing space in the general travel lanes while maintaining speeds of at least 55 mph. The Express Lanes carry twice as many people as general travel lanes during peak traffic times because of carpoolers.

    Yes. Similar systems are functioning successfully in several other states including California, Florida, Minnesota, Washington, Texas, Colorado and Maryland and are under study in other locations.
    Call the customer service center at 855-813-9127, deactivate your Express Pass and purchase a new pass. If your Express Pass is not working correctly due to equipment malfunction, it will be replaced without charge.
    The Express Lanes span I-15 from U.S. 6 in Spanish Fork to Layton Parkway.
    UDOT's goal is to move the maximum amount of people through the corridor. The Express Lanes move more people with fewer vehicles because they carry carpoolers, but the lanes still have more capacity. By permitting solo drivers to purchase the remaining capacity UDOT can decrease the travel times for all drivers, including those in the general lanes.
    Utah's Express Lanes are approximately 72 miles. They span from U.S. 6 to Layton Parkway.

    The Express Lanes are divided into seven payment zones that vary in length:

    • South Utah County Zone (U.S. 6 to University Parkway) - 12 miles
    • Central Utah County Zone (University Parkway to Lehi Main Street) - 10 miles
    • North Utah County Zone (Lehi Main Street to 14600 South) - 9 miles
    • South Valley Zone (14600 South to 7200 South) - 9 miles
    • Salt Lake Zone (7200 South to 2300 North) - 14 miles
    • South Davis Zone – (2300 North to Parish Lane) - 10 miles
    • North Davis Zone (Parrish Lane to Layton Parkway) - 8 miles

    UDOT is conducting an environmental study to look at adding Express Lanes north of Layton Parkway.

    Express Lanes users may enter and exit the lanes at access points marked by white-dotted striping. Crossing the solid, double-white lines is unsafe and illegal. An access point is located at each I-15 interchange. Users should exit the Express Lanes at the interchange before their exit. Signs along the Express Lanes indicate which access point to use to reach your exit safely.
    The dedicated access points encourage people to plan ahead. It is unsafe to merge across five lanes of freeway traffic to reach an exit at the last minute. The striping was designed so that motorists have enough time to safely cross all of the lanes before they exit the freeway. Access points range from 3,000 to 9,000 feet long, giving room for users to enter and exit the lanes or pass a slow driver.

    Other states that implemented similar access points to their Express Lanes found that speeds actually increased in their Express Lanes. Research showed that motorists in the Express Lanes drive slower when the traffic in the lane next to them is moving at a significantly slower pace. Drivers moving at freeway speeds in the Express Lanes are expecting that a vehicle in the congested, adjacent lane will pull out in front of them. Dedicated access points minimize this concern, giving Express Lane users confidence to travel at freeway speeds without the fear of someone pulling out in front of them.

    It is unsafe and illegal to cross the solid, double-white lines. Movements in and out of the Express Lanes are only allowed at access points with white-dotted striping.

    Only carpools, motorcycles, buses, C Decal vehicles, emergency vehicles and solo drivers with an Express Pass are eligible to use the Express Lanes.

    Follow the speed limit. The Express Lane is not a passing lane. The speed limit on I-15 is 70 mph and the majority of traffic is flowing at this speed. UDOT and the Utah Highway Patrol do not authorize vehicles to travel at speeds faster than the posted speed limit.

    The Utah Highway Patrol watches specifically for motorists who are driving too slow, driving too fast, tailgating or exhibiting other Express Lane violations. This includes drivers in the general-purpose lanes who fail to allow drivers in the Express Lanes to merge.

    Violators will be issued a citation with a fine of $337 or more. UDOT and the Utah Highway Patrol (UHP) do not receive any of this money as it is dispersed to the local government agency where the infraction occurred per traditional means.
    Law enforcement looks at the number of people in vehicles, Express Passes attached to drivers' windshields and the lights behind the electronic signs. The lights behind the signs show law enforcement the status of each Express Pass that travels under it.
    • Green indicates the Express Pass was read and charged.
    • Yellow indicates the pass wasn't read and law enforcement should check if the driver is carpooling.
    • Blue indicates a negative balance on the driver's account or the Express Pass was lost or stolen.

    All UHP troopers enforce the Express Lane laws.

    The following table shows the monthly number of stops UHP troopers made for an Express Lane violation; a vehicle crossing the double white lines or and HOV violation.

    Year Month Total
    2018 September 236
    2018 August 216
    2018 July 240
    2018 June 264
    2018 May 425
    2018 April 341
    2018 March 455
    2018 February 418
    2018 January 312
    2017 December 337
    2017 November 347
    2017 October 515
    2017 September 567
    2017 August 419
    2017 July 353
    2017 June 405
    2017 May 617
    2017 April 399
    2017 March 494
    2017 February 350
    2017 January 276
    2016 December 455
    2016 November 320
    2016 October 486
    2016 September 487
    2016 August 356
    2016 July 351
    2016 June 314
    2016 May 354
    2016 April 278
    2016 March 379
    2016 February 284
    2016 January 254
    2015 December 255