Glossary

Air carrier: Certificated provider of scheduled and nonscheduled services.

Chained dollars:  A method of adjusting to real dollar amounts to account for both changes in price-levels and the composition of output over time. This is completed by using a chain-weighted type...

7-9 Hybrid Vehicle Sales: 2000–2014

Table Version | Excel

Source: Ward's Automotive Group, www.wardsauto.com as of September 2015.

7-8 Onroad Alternative Fuel Vehicles by Year: 1998–2012

Table Version | Excel

aFlex fuel vehicles are capable of running on E85, plain gasoline, or any ethanol-gasoline blends in between. bExcludes gasoline-electric hybrids. cIncludes compressed natural gas (CNG) and liquified natural gas (LNG).

7-7 Fuel Economy of Light-Duty Vehicles: 1990–2014

Table Version | Excel

Key: CAFE = Corporate Average Fuel Economy.

Notes: New fleet data and CAFE standards are for vehicle model years. On-road fleet data include passenger cars and light trucks and are estimated using average miles traveled...

7-6 Highway Vehicle Air Pollutant Emissions: 2002–2014

Table Version | Excel

Key: PM-10 = airborne particulates of less than 10 microns; PM-2.5 = airborne particulates of less than 2.5 microns.

Notes: Indices are calculated using data on highway vehicle emissions only. Particulate matters...

7-5 Greenhouse Gas Emissions by Transportation Mode: 2013

Table Version | Excel

Key: GHG = greenhouse gas. TgCO2 Eq. = teragrams of carbon dioxide equivalent. A teragram = 1 million metric tons.

Note: Percents may not add to 100 due to rounding.

Source: U.S. Environmental...

7-4 Greenhouse Gas Emissions by Sector: 1990–2013

Table Version | Excel

Key: TgCO2 Eq. = teragrams of carbon dioxide equivalent. A teragram = 1 million metric tons.

Note: Electric power sector emissions are distributed across sectors. Emissions include CO2, CH4, N2O, HFCs, PFCs, and SF6....

7-3 Petroleum Consumption by Sector: 1960–2014

Table Version | Excel

Source: U.S. Department of Energy, U.S. Energy Information Administration, Monthly Energy Review, available at www.eia.gov/totalenergy/data/monthly as of September 2015.

7-2 Transportation Energy Consumption by Source: 2014

Table Version | Excel

Key: Btu = British thermal unit.

Notes: Includes primary energy consumed. Excludes electricity retail sales and electrical system energy losses.

Source: U.S. Department of Energy, U.S. Energy...

7-1 Energy Consumption by Sector: 1960–2014

Table Version | Excel

Key: Btu = British thermal unit.

Note: Includes primary energy consumption, electricity retail sales, and electrical system energy losses.

Source: U.S. Department of Energy, U.S. Energy Information...