Level-of-service concept for evaluating public transport. Paper presented at the 53rd Annual Meeting of the Highway Research Board, Washington, January 1974.

A system of evaluating service variables common to all public transport modes is proposed so that an existing system may be managed or improved and a new system may be built on the basis of its ability to fulfil a desired level of service. The variables discussed are those directly perceived by the user regardless of mode: overall trip speed and en route delay and comfort factors associated with the vehicle.