Why do some agencies operate signals in full operation mode initially before switching them to flashing mode?

Operating traffic signals in full operation mode initially serves several crucial purposes, even before transitioning to flashing mode. One significant reason for this approach is to gather traffic data effectively. When signals are in full operation, they allow for a comprehensive analysis of traffic flow patterns, vehicle counts, and pedestrian interactions at the intersection. This data is essential for understanding peak traffic times, identifying bottlenecks, and making informed decisions about necessary adjustments to signal timing or infrastructure improvements.

While the preservation of battery life is an important consideration for some systems, particularly those that rely on battery backup during power outages, it is not the primary reason for operating signals in full mode initially. The same goes for the potential to reduce operational costs or enhance visibility, which are also secondary benefits rather than the main objective.

Ultimately, the leading reason for this practice is data collection, as it equips traffic engineers and agency officials with valuable information to optimize traffic management strategies, improve safety, and enhance the overall flow of vehicles and pedestrians through the intersection. This systematic approach allows for a thorough assessment before any changes, such as moving to a less operationally intensive flashing mode, are implemented.