Which tool is essential for measuring traffic flows in a work zone?

Traffic counters or observation protocols are crucial for accurately measuring traffic flows in a work zone. These tools gather quantitative data on the number of vehicles passing through a given point, which is essential for assessing the impact of construction activities on roadway performance and safety. The data collected can inform traffic management strategies, identify peak traffic times, and help in planning necessary adjustments to ensure smooth vehicle movements and minimize congestion.

While traffic signals may control the flow of traffic, they do not measure traffic volumes. Speed radar guns provide information on vehicle speeds but do not offer comprehensive data on the number of vehicles. Detour signs serve to redirect traffic but are not measurement tools. Therefore, traffic counters or observation protocols stand out as the primary tools for traffic flow measurement in work zones, making them indispensable for effective traffic management and safety planning.