7-8 Alternative Fuel Vehicles by Fuel Type: 2004–2014
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Number of vehicles
Year Flex Fuel/Ethanol a Electric b Natural Gas c Propane Hydrogen 2004 674,678 2,200 7,888 2,150...General
Legacy ID
201
7-7 Fuel Economy of Light-Duty Vehicles: 1990–2014
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Miles per gallon
Year Passenger car CAFE standard Light-truck CAFE standard Passenger car EPA unadj. lab Light-truck EPA unadj. Lab Light-duty on-road fleet...7-6 Highway Vehicle Air Pollutant Emissions: 2002–2014
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Index: 2002 = 1.0
Year Carbon monoxide Nitrogen oxide Volatile organic compounds PM-10 PM-2.5 Sulfur dioxide Ammonia 2002 1.00 1...7-5 Greenhouse Gas Emissions by Transportation Mode: 2014
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percent of TgCO2 Eq.
Mode TgCO2 Eq. Percent Highway 1,531 84% Air 152 8% Water 29 2...7-4 Greenhouse Gas Emissions by Sector: 1990–2014
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Tg CO2 Eq.
Year Transportation Industry Residential Commercial Agriculture 1990 1,554 2,263 952 969 625...7-3 Petroleum Consumption by Sector: 1960–2015
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million barrels per day
Year Transportation Industrial Residential and commercial Electric power 1960 5.1 2.7 1.7 0.2...7-2 Transportation Energy Use by Source: 2015
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percent of Btu consumed
Source Trillion Btu Percent Petroleum 25,358 92 Renewable energy 1,347 5 Natural gas 923...7-1 Energy Consumption by Sector: 1960–2015
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Quadrillion Btu
Year Transportation Industrial Residential Commercial 1960 10.6 20.8 9.0 4.6 1961 10.8...6-8 Motor Vehicle Gasoline Prices: Jan. 1980 – Aug. 2016
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Dollars per gallon
Month Nominal price Real price Jan-1980 1.13 3.50 Feb-1980 1.21 3.68 Mar-1980 1.25...6-6 Freight Transportation Services Index: Jan. 2000–Aug. 2016
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Chain-type Index: 2000 = 100, seasonally adjusted
Month TSI-Freight TSI-Passenger TSI-Combined Jan-2000 105.4 94.6 101.8 Feb-2000...