The headway between vehicles in public transit systems's the time between two vehicles passing the same point traveling in the same direction on a given route. This term's most frequently applied to rail transport, where the number of tracks's limited and signalling capabilities control the headway. A shorter headway signifies a more frequent service. Railway headways Capacity measured by minimum headway On a railway system, the potential capacity of a line's measured by calculating the minimum… (More on Headway)