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City of Peoria Safety Analysis & Signal Prioritization Project

The City of Peoria retained Y2K Engineering from the 2018 Traffic On-Call to provide engineering support citywide for various tasks.

Safety Analysis

This portion of the project involved a safety analysis of the City of Peoria roadway network. Using 5 years of tabular crash data, an interactive database was developed to better understand trends, analyze specific intersections and identify areas for improvement. A map was developed to show the intersections and segments experiencing the highest crash rates. Additionally, the FHWA  Pedestrian and Bicycle Crash Analysis Tool (PBCAT) was used to perform crash typing on pedestrian and bicycle crashes within the five year study period. Crash typing assists in determining the sequence of events that lead up to and cause crashes involving pedestrians and bicyclists. These safety analysis tools can be used by City staff to identify opportunities to improve safety.  

Countermeasures for CIP

The results from the safety analysis were used to develop effective improvements for 13 identified intersections. These intersections were selected based on crash rate, crash frequency, crash severity, bicycle and pedestrian crashes and improvement history. Once appropriate countermeasures were identified, intersection improvement projects were developed for inclusion in the City of Peoria CIP. Project development included a brief description of proposed improvements, anticipated opportunities and challenges, program level cost estimates and a crash summary. 

Prioritization/Warrant tool

Another component to this project was to develop supplemental procedures and tools for City staff to be able to conduct traffic signal warrant analysis and prioritization. Two tools were developed as part of this effort. A signal warrant analysis tool was developed based on the MUTCD Signal Warrants. Using this tool, each warrant can be analyzed for a given intersection quickly and with minimal data inputs required from staff. Once an intersection warrants the installation of a traffic signal, there are often a limited number of resources available to install it. A prioritization tool was developed through collaboration with City of Peoria staff to rank each intersection based on various parameters. Analyzed intersections were inputted into the prioritization tool and a ranking list developed to determine the priority at which resources should be allocated.