Summary of Liberty Traffic Signal ITS Upgrades - 11 Intersections


Contact Information

Organization: Liberty
Contact person: Ben McCabe
Title: Assistant Director of Public Works
Phone: 8164394502
Organization address: 101 E Kansas
  Liberty, MO    64068

General Information

1. Project name: Liberty Traffic Signal ITS Upgrades - 11 Intersections
2. City(ies), County(ies), State: Liberty, Clay County, Missouri
3. Routes, interchanges and/or intersections: 11 traffic signals located at various locations in the city limits of Liberty, Missouri.
4. Primary project mode: Highway/roadway 
5. Supplementary project mode(s): * Active Transportation * Freight * Highway/Roadway )
The City of Liberty owns and operates 15 traffic signals within the municipal limits. 11 traffic signals with the city limits run on set timing plans and detection. Liberty does not have the ability to remotely connect and monitor these lights and much of the equipment (detectors and cabinet equipment) is over a decade old. Several of the signals are split phased and don’t serve pedestrians. Liberty’s long term goal is upgrade all the signals allowing for remote connectivity and performance monitoring, add the signals to the OGL system, and make necessary improvements (including ADA compliant curb ramps and push button detectors) to serve alternative transportation choices. These improvements will also allow for improved traffic flow for vehicles and freight throughout the city.
6. Project Purpose: * System operations and management )
7. Project sponsor: Andy Noll
8. Total budget in 2019 dollars: $2000000
9. Project description: Intent of the project is to improve traffic flow at signalized intersections, provide pedestrian interconnectivity, and allow for more modern monitoring of traffic situations. Currently, during peak periods many of the signalized intersection back up. Staff must visit each site in order to make adjustments. Primary users will be vehicles, trucks, heavy trucks with freight, and pedestrians.
10. Scope: The project includes upgrades at 11 signalized intersections. Specific improvements include the following: •Replacing outdated equipment with modern equipment including controllers, detectors, MMU’s etc. •Accommodate pedestrians and bicyclists, including the replacing/adding curb ramps and pedestrian poles/push buttons that meet ADA requirements. •Place signals on the OGL system. •Allow for remote connectivity for performance and other traffic related issues. •Due to the skew of the existing intersection and large radius turn lane for traffic traveling from westbound 291 Highway to northbound Leonard Street, high speeds are maintained during this turning movement. To improve safety at the intersection for both vehicles and future pedestrians, this project converts the skewed intersection into a standard 90 degree intersection with standard turn lanes.
11. Project schedule: Design - 2020 to 2025 Right of Way and easement acquisition - 2020 to 2025 Construction - 2020 to 2030

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