Express Pass is an electronic payment system that UDOT will implement along the I-15 Express Lanes by fall 2010. This system will replace the current decal program that allows a monitored number of solo drivers to pay a $50/month fee to use the lanes.

The electronic system will run from American Fork Main Street to 2300 North in Salt Lake City and from State Street in Farmington to the south Layton interchange. This system will enable UDOT to better manage traffic on I-15 by giving more solo drivers the opportunity to use the Express Lanes while ensuring that carpooling remains a benefit. As always, carpoolers, buses, C plate vehicles and motorcycles are the first priority in the Express Lanes and may continue to use them without charge.

The electronic system will charge solo drivers by using an algorithm that adjusts the price based on traffic conditions. The Express Lanes will be divided into four payment zones with overhead signs that show the price to use each zone. Readers at several locations along the Express Lanes detect in-vehicle transponders as they travel through the zones and drivers' accounts are debited when they exit. UDOT uses the payments to operate and maintain the Express Lanes.