Evaluation of transportation systems—a behavioural approach
This paper reports the results of a study on developing level of service indices for evaluating urban transportation systems. For this purpose the travel choices of individuals are analyzed considering the effect of the transportation system characteristics on the system's level of service as perceived by the user. A utility maximization approach is used to yield a utility function that contains a new behavioural measure of accessibility. This function is considered as a level of service index that reflects the marginal benefits to a system's user when he makes a trip by the system.The parameters of the level of service indices are determined by using a sample consisting of 2695 trips obtained from the 1976 work trip survey for the City of Calgary, Alberta, Canada. Level of service indices are developed for four modes: auto driver, auto passenger, conventional bus, and express bus.The implementation procedure of the indices for assessment and evaluation is shown by a case study for the City of Calgary.