Highway Capacity Manual

The Highway Capacity Manual (HCM) is a guide used by transportation professionals to assess and improve the efficiency of roads and intersections. It provides standardized methods and tools to measure how well roads manage traffic flow, considering factors like vehicle speed, lane usage, and delay. By analyzing these elements, planners can identify areas needing improvement, such as adding lanes or adjusting signals, to enhance travel safety and reduce congestion. Overall, the HCM helps ensure that roadways meet the needs of drivers and pedestrians effectively.