Fuel Use and Optimality of Assignments in Multivehicle Households in 2001 and 2009

摘要: Multivehicle household fleets often consist of vehicles with a wide range attributes, including passenger and cargo capacities, towing capability, fuel consumption. Decisions for how these are assigned to trips can have significant impact on household's total use. In this paper, actual vehicle assignments from the 2001 2009 National Household Travel Surveys data compared decisions minimizing use by using CTRAM, model that determines optimal vehicle-to-trip while considering constraints availability capability. Results show average potential reduction in through assignment multivehicle households was 10.9% 10.1% 2009. However, corresponding increase optimality seen period does not appear be result greater prevalence active, short-term decisions, such as driver's voluntary nonpreferred or switching vehic...