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Indiana Local Technical Assistance Program (LTAP) Technical Reports

Traffic signal

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Development, Testing And Implementation Of Traffic Signal Performance Measures At A Local Governmental Agency, Jay Alan Grossman May 2017

Development, Testing And Implementation Of Traffic Signal Performance Measures At A Local Governmental Agency, Jay Alan Grossman

Indiana Local Technical Assistance Program (LTAP) Technical Reports

The testing and implementation of traffic signal performance measures at a local government agency revolves around three main performance measures: signal detector anomaly identification, signal split failures reports and red light running identification. Signal detector anomaly identification used the Kolmogorov-Smirnov test to compare current and past detector operation and was shown to be effective in identification of anomalies. Three different types of split failure reports were utilized to determine operational issues on signal systems. Long-term longitudinal, corridor scale, and single intersection split failure reports were implemented on active signal systems and found to be effective in determining and correcting problems. …


Performance Measures For Local Agency Traffic Signals, Jay Grossman, Darcy M. Bullock Mar 2013

Performance Measures For Local Agency Traffic Signals, Jay Grossman, Darcy M. Bullock

Indiana Local Technical Assistance Program (LTAP) Technical Reports

The project focused on accelerating implementation of research recommendations emerging from traffic signal research projects conducted by the National Cooperative Research Program and Indiana Department of Transportation. This project developed specification language that was subsequently used in procurements in Elkhart County, IN; Lafayette, IN; and Morgantown, WV. The performance measures specified in Appendix A and subsequently deployed in Elkhart County, IN, and Lafayette, IN, were the first commercial deployment of real-time traffic signal performance measures recommended by NCHRP 3-79a. The deployment in Lafayette, IN, received an ACEC award in March 2012. In addition to accelerating implementation, this research project examined …