Transportation Expenditures by Selected Household Characteristics by Income Quintile. Investigates transportation by income quintile by region, urban vs rural, households with earners, work status, households with a member 65 and over, family type, race, and ethnicity. Vehicle trips, vehicle miles traveled, person trips, and person miles traveled by income quintile and select characteristics. Percent of after-tax income spent on transportation by income quintile and select characteristics. Change in share of after-tax income spent on transportation by income quintile and select characteristics.