Express Lanes

What are Express Lanes?

Express Lanes provide travelers with more reliable, predictable travel times. Anyone can use Express Lanes—a solo driver or a driver with a passenger in a vehicle—by paying a toll. Motorcyclists and drivers with at least two passengers can choose to travel for free.

The addition of an Express Lane on the I-25 corridor does not mean that existing general purpose lanes will be tolled; existing general purpose lanes will continue to be free to use.

To use any Colorado Express Lanes, you will need an ExpressToll account and pass to avoid a higher license plate toll. The Switchable HOV Transponder is the only pass that allows you to choose the carpool option and use the lanes for free if the driver has two or more passengers. A traveler may also use the lane without cost via transit providers like Bustang. Motorists can get a pass by visiting

  • Reduce delay on Colorado’s most seriously congested corridors.
  • Use toll pricing to manage congestion.
  • Maintain reliable travel times now and in the future.
  • Promote transit and carpooling.
Toll Pricing

Express Lanes help to manage traffic congestion, and toll rates will vary by time of day to provide reliable travel times.

Toll rates are set to provide reliable travel times and are not set to maximize revenue. Toll rates have not yet been set. The toll rates and any rate changes will be approved by CDOT's High Performance Transportation Enterprise Board.