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Aurora Citywide Traffic Signal Retiming

How a single project can improve mobility for an entire city

  • 300

    Traffic Signals

  • 4

    Times of Day

  • Aurora, Colorado

    Aurora, Colorado

Small changes in one area can have large effects on the other side of the city

Signal timing projects cover more than just operations and logistics. When the time came for the City of Aurora to complete a city-wide traffic signal timing update—retiming nearly 300 traffic signals within the city limits—they turned to us.

Aurora is the second largest city in the Denver Metro area with more than 370,000 people. That meant tackling this challenge was no easy feat. The project included four essential components: data collection, evaluation of existing signal timing parameters, optimization of signal operations, and implementation of new timing plans throughout the city.

Timing plans were created for four separate times of day, each with their own distinct travel patterns: morning peak, evening peak, weekday off-peak, and weekend peak. The existing timing parameters were standardized during this process, to ensure that all of the signals within the city work together. The entire city was programmed with one master cycle length for each time of day to remove any disconnect between corridors that were previously operating with different cycle lengths.

The new timing plans were optimized to provide the best possible journey for drivers while also ensuring pedestrians and cyclists would be able to safely cross at any intersection at any time. As the timing was implemented throughout the city one corridor at a time, we worked diligently in the field to make sure all of the new timing plans were safe, accurate, and accommodating to all residents of Aurora.

At a Glance

Meet Our Team

Nick Cioffredi, Senior Principal, Transportation

You’d be amazed how many bridges you drive over on a daily basis and don’t realize that you’re on a bridge. My job out there is to keep our neighbors and communities safe.
Nick Cioffredi Senior Principal, Transportation Read More

Victoria Edington, Senior Transportation Engineer

I enjoy being able to work on projects that help the surrounding community, because it’s my community, too.
Victoria Edington Senior Transportation Engineer Read More

Nick Cioffredi

Senior Principal, Transportation

Victoria Edington

Senior Transportation Engineer

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