National Household Travel Survey (NHTS) - 1983
EnergyScience & Research
Oak Ridge National Laboratory
National Household Travel Survey (NHTS) - 1990
EnergyScience & Research
National Household Travel Survey (NHTS) - 1995
EnergyScience & Research
National Household Travel Survey (NHTS) - 2001
EnergyScience & Research
National Household Travel Survey (NHTS) - 2009
EnergyScience & Research
National Household Travel Survey
EnergyScience & Research