USE OF REGION, LIFE-CYCLE AND ROLE VARIABLES IN THE SHORT-RUN ESTIMATION OF THE DEMAND FOR GASOLINE AND MILES TRAVELED

Short-run demand for miles travelled and gasoline consumed are estimat ed for population subgroups defined by region, occupation and life-cyc le. Understanding and quantifying the different responses of subgroups to changes in income and gasoline price are important from the perspe ctive of transport and energy policies. Micro data are used to investi gate the effects of marginal changes in price and income among sociode mographic groups. This paper demonstrates that there are significant d ifferences in the estimated parameters between the general population and subgroups within the population. Further, significant differences may be demonstrated between those subgroups.