Analysis of statistics from sample household travel surveys in reading in 1961, 1971 and 1976 showed an almost constant daily trip rate of 2.9 trips per person, including walk trips. trips made to or from home also remained steady at about 87 per cent of all trips made. The proportions of car driver and passenger trips nearly doubled over the 14 year period whereas work trips fell by 20 per cent. A statistical analysis was applied to a single data bank for all three surveys to identify the most important factors affecting trip-making and, in particular, to separate the effect of changes in the basic trip rates of certain types of household from that due to changes in the proportions of different types of household in the population. It was found that the most important variables affecting home-based person trip rates averaged at household level were the number of employed persons in the household and the number of cars owned. Household location and year of survey (reflecting changes over time) were less important. Car driver trips per household were found to be stable with the increase in this type of trip being due to a large increase in car ownership. Home-based work trip rates per employed person (averaged at household level) were the least stable, falling rapidly between 1971 and 1976.
Samenvatting