Gordon, Peter; Richardson, Harry W.; Liao, Yu-Chun - In: Transportation Research Part A: Policy and Practice 31 (1997) 3, pp. 259-262
This note challenges the use of census data for evaluating changes in commuting speeds, partly because these data require indirect distance measures, but primarily because they do not differentiate between non-stop trips and trip chains. The proportion of trip chains to total trips increased...