Adding More Signal Green Light Time

on 2100 North, Pioneer Crossing, & Redwood Road

Why is there so much traffic?

Rapid growth in northwestern Utah County has had a significant impact on traffic congestion. In the last three years, Lehi, Saratoga Springs and Eagle Mountain have averaged 12-15% increase in population annually. That is roughly 60,000+ new residents over the last three years, which in turn, contributes to traffic congestion on major roads such as 2100 North, Pioneer Crossing, and Redwood Road. Traffic demand on these roads is at or above their current capacity. In response to this challenge, UDOT is exploring a range of immediate, near- and long-term solutions, including adding more green light time to 2100 North, Pioneer Crossing, and Redwood Road during morning and afternoon commutes.

Interim Step: PM Rush Hour Signal Timing

Traffic signal timing adjustments are a technological tool UDOT used as an interim step while long-term mobility improvements are planned for the area.

The first signal timing changes will occur in the PM rush hour on Tuesday, October 3rd. UDOT is planning to make the following traffic signal timing adjustments on 2100 North, Pioneer Crossing, and Redwood Road:

  • Adding more green light time for east-west travel on 2100 North and Pioneer Crossing.
  • Adding more green light time for north-south travel on Redwood Road.

UDOT anticipates that these traffic signal adjustments will result in the following benefits: 

  • 2100 North – move more people, with shorter westbound travel times
  • Pioneer Crossing – move more people, with shorter eastbound and westbound travel times.
  • Redwood Road – move more people between 2100 North and Pioneer Crossing while maintaining current southbound travel times.
  • I-15 Exit Ramps – reduce vehicle backups from cars exiting I-15 at 2100 North and at Pioneer Crossing.


UDOT’s goal is to improve the overall travel system experience. However, travelers need to be aware that signal timing adjustments are a series of trade-offs. More green time on the main route means drivers on side streets may experience longer wait times. Where possible, routes could be changed to incorporate these major routes as an alternative to their typical commutes. Drivers shifting their travel times out of the PM rush hour is also encouraged, if possible.

UDOT is planning to roll these changes out one corridor at a time. We will begin with 2100 North starting on October 3rd. If all goes well, we will move on to Pioneer Crossing and then Redwood Road within a few days.

Once those changes are made, we will then focus on the AM rush hour. 

These signal timing adjustments are a work in progress. Traffic engineers from UDOT and Lehi will be onsite to monitor these changes in real-time to ensure proper functionality. UDOT plans to continually monitor these adjustments after implementation to better keep Utah moving.


While UDOT is responsible for traffic signals on state roads, we collaborate and work closely with our city and county partners. In this area, we collaborated with Lehi, Saratoga Springs, and American Fork to reevaluate the strategies used in the current traffic signal timing plans. With their input, UDOT created new signal timing plans aimed at alleviating traffic congestion.

With traffic volumes so high and rising, signal retiming alone will not be a cure-all for rush hour traffic woes, but we expect it will have a meaningful positive impact.

Near & Long-Term Solutions

While we may never build ourselves out of congestion, UDOT and area transportation planning agencies have been working together to keep Utah County moving into the future. 

Signal timing adjustments are just one example of how UDOT and the local communities are taking action to improve mobility on our roads. The list below identifies a few long-term travel solutions that are nearing construction or currently being studied in northwestern Utah County.

  • Mountain View Corridor (2024 and 2025 Construction): UDOT will construct the freeway portion of Mountain View Corridor from 2100 North to Porter Rockwell with a bridge at 2100 North and Redwood Road. This road will provide an alternative north-south route to I-15 and is expected to reduce travel demand along 2100 North and on I-15 over Point of the Mountain.
  • 2300 West Widening (2024 Construction): Lehi City will widen 2300 West to five lanes from 2150 North to Lehi Main Street. It will also install intersection improvements at the 2100 North and 2300 West intersections.  This widening is expected to help with north-south mobility.
  • 2100 North Freeway Conversion (2026 Construction): UDOT will add the freeway lanes in the middle of the existing 2100 North frontage roads. Bridges will be constructed to provide interchanges at 3600 West and 2300 West. This important step will significantly improve east-west mobility.
  • SR-92 Environmental Study (ongoing): UDOT is evaluating the need for an SR-92 western extension from Ashton Boulevard to Redwood Road across the Jordan River.
  • Mountain View Corridor South Environmental Study (ongoing): UDOT is evaluating the need to extend Mountain View Corridor from SR-73 (Cory Wride Highway) to Redwood Road at the south end of Saratoga Springs.
  • Pioneer Crossing Planning (ongoing): UDOT is evaluating long term improvements along Pioneer Crossing from I-15 to the Cory Wride Highway at the Mountain View Corridor.


For a complete list of planned transportation improvements, please see Mountainland Association of Government’s Regional Transportation Plan at


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Contact Us

Signal timing adjustments on 2100 North, Pioneer Crossing, and Redwood Road are a dynamic process and are monitored in real-time by the UDOT Traffic Operations Center.

Reach out to the Traffic Operations Center at the contacts below if you have specific feedback for signal timings on these roads.