Performance-Based Management of Traffic Signals (2020) / Chapter Skim
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From page 4... ...
CHAPTER FOCUS Chapter 1 is a roadmap to signal performance measures, providing basic information and a summary of benefits and required investments. It also includes an introduction to the rest of the guidebook chapters, organized using the steps for installing and applying signal performance measures.
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EXHIBIT 1-1. FLOW OF INFORMATION ATSPM reports are an essential part of a modern retiming process because they are used at every step – identifying when changes are needed, informing which parameters need to change and by how much, verifying that the changes had a positive impact, and reporting results.
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EXHIBIT 1-3. SIGNAL PERFORMANCE MEASURE BENEFITS SOLVE PROBLEMS FASTER AUTOMATE ALERTS FOR PROACTIVE MANAGEMENT REDUCE MODELING NEEDS FOR EXISTING CONDITIONS IDENTIFY HIGH-PRIORITY LOCATIONS TRACK PROGRESS TOWARD AGENCY GOALS PRODUCE SHARABLE REPORTS THAT SUMMARIZE IMPACTS 1.2 SIGNAL PERFORMANCE MEASURE BENEFITS Using ATSPMs is a proactive approach to traffic signal system management because trends are monitored over time, allowing staff to identify issues before the public calls to report them.
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1.3 INVESTING IN SIGNAL PERFORMANCE MEASURES The building blocks for performance-based management are people and equipment. Knowledgeable staff are needed to deploy and apply signal performance measures, and collecting and calculating signal performance measures requires specialized equipment.
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1.3.2 EQUIPMENT AND SOFTWARE Physical equipment and software are required to collect data and process signal performance measures. An important step in implementing signal performance measures is taking stock of existing equipment and determining the degree to which it is ready for ATSPMs.
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STEP 1: SELECT PERFORMANCE MEASURES The first step in establishing a performancebased program is determining which signal performance measures are the most important. The answer will depend on agency goals, objectives, and methods of signal system management.
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STEP 7: APPLY PERFORMANCE MEASURES Signal performance measures can be used to inform signal timing adjustments, identify mis-programmed signal timing parameters (e.g., values that were initially programmed incorrectly) , and identify equipment that is malfunctioning.
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