Ensuring traffic signals and related infrastructure are in good working order is an important task for a transportation agency’s maintenance crews. However, evaluation processes and standards can vary depending on location and other factors.
To standardize its assessment procedures and criteria, the Illinois Department of Transportation conducted a research project that produced procedures for 34 different traffic signal components, as well as recommendations for putting the procedures into practice across the state.
Read the report: Optimum Traffic Signal Condition Assessment and Strategic Maintenance Planning, August 2024
Image source: Illinois Department of Transportation