What is defined as the general speed and direction of vehicle or pedestrian movement?

The term that refers to the general speed and direction of vehicle or pedestrian movement is traffic flow. Traffic flow encompasses the movement of vehicles and pedestrians on a roadway or pathway, considering both how quickly they travel (speed) and the patterns in which they move (direction).

Traffic volume, on the other hand, measures the number of vehicles or pedestrians passing a certain point over a specific period, which doesn't directly correspond to their speed or direction. Traffic density refers to the concentration of vehicles or pedestrians in a given space at a particular time and focuses more on how crowded a roadway or area is rather than their movement characteristics. Traffic speed pertains specifically to how fast vehicles or pedestrians are traveling, which is only one aspect of the broader concept of traffic flow, that includes both speed and movement direction. Thus, traffic flow is the most comprehensive term related to both speed and directional movement of vehicles or pedestrians.