TRANSPORTATION ENERGY DATA BOOK: EDITION 22 - Center for ...

A–20
Motorcycles
Number of vehicles, vehicle-miles - DOT, FHWA, Highway Statistics 2000, Table VM-1.
Passenger-miles - Vehicle-miles multiplied by an average load factor.
Load factor - 1995 NPTS shows motorcycle load factor as 1.2 persons per vehicle.
Energy intensities -
Btu per vehicle-mile - Motorcycle energy use divided by vehicle-miles.
Btu per passenger-mile - Motorcycle energy use divided by passenger-miles.
Energy use - See Energy Use Sources, p. A-4. Data series shown in Table 2.6.
Buses
Transit
Number of vehicles, vehicle miles, passenger miles - APTA, 2002 Public Transportation Fact
Book, Washington, DC, 2002. Data series shown on Table 8.12.
Load factor - Passenger-miles divided by vehicle-miles.
Energy intensities -
Btu per vehicle-mile - Transit bus energy use divided by transit bus vehicle-miles.
Btu per passenger-mile - Transit bus energy use divided by transit bus passenger-miles.
Energy use - See Energy Use Sources, p. A-4. Data series shown in Table 8.12.
Intercity
Passenger-miles - Eno Foundation for Transportation, Transportation in America 2000, Eighteenth
edition, Washington, DC. Data series shown in Table 8.13. Because the 2000 data were not
available at the time this report went to press, the 1999 data were used again for 2000.
Energy intensities -
Btu per passenger-mile - Intercity bus energy use divided by intercity bus passenger-miles.
Energy use - See Energy Use Sources, p. A-5 . Data series shown in Table 8.13. Because the 2000
data were not available at the time this report went to press, the 1999 data were used again for 2000.
School
Number of vehicles - DOT, FHWA, Highway Statistics 2000, Table MV-10. Data series shown in
Table 8.13.
Energy use - See Energy Use Sources, p. A-5 . Data series shown in Table 8.13. Because the 2000
data were not available at the time this report went to press, the 1999 data were used again for 2000.
TRANSPORTATION ENERGY DATA BOOK: EDITION 22—2002