How can the performance of signal systems be evaluated?

Evaluating the performance of signal systems is primarily achieved through the analysis of traffic flow data and incident reports. This approach provides quantitative and qualitative insights into how effectively a signal system manages vehicle and pedestrian traffic. Traffic flow data reveals patterns such as congestion levels, travel times, and the impact of signals on overall traffic efficiency. Incident reports offer context regarding disruptions, crashes, and other occurrences that might affect traffic flow. Together, these analyses help identify signal timing adjustments, the need for additional signals, or other improvements, leading to enhanced traffic management.

While conducting surveys of local residents can provide subjective feedback on perceptions of traffic and signal efficacy, it lacks the objectivity and precision that direct traffic data provides. Observing pedestrian movements, though useful for understanding right-of-way and pedestrian safety, does not capture the broader dynamics of vehicular interactions at intersections. Similarly, assessing weather conditions during peak hours may offer insights about traffic patterns but does not directly measure signal performance in terms of functionality and efficiency. Thus, analyzing traffic flow data and incident reports stands out as the most comprehensive method for evaluating signal system performance.