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

TRANSPORTATION ENERGY DATA BOOK: EDITION 22—2002
Age
(years)
Vehicles
(thousands) Percentage
Table 6.7
Trucks in Operation and Vehicle Travel by Age, 1970 and 2000
1970 2000
Cumulative
percentage
Vehicles
(thousands) Percentage
Cumulative
percentage Percentage
2000 Estimated
vehicle travel Average annual
Cumulative
percentage
miles per
vehicle
Under 1 a 1,262 7.1% 7.1% 6,439 7.5% 7.5% 9.2% 9.2% 17,500
1 1,881 10.6% 17.8% 7,726 9.0% 16.6% 12.1% 21.3% 19,200
2 1,536 8.7% 26.5% 6,630 7.7% 24.3% 10.7% 32.0% 19,800
3 1,428 8.1% 34.6% 6,313 7.4% 31.7% 9.2% 41.2% 17,900
4 1,483 8.4% 43.0% 5,300 6.2% 37.9% 7.6% 48.7% 17,500
5 1,339 7.6% 50.5% 5,818 6.8% 44.7% 8.0% 56.8% 17,000
6 1,154 6.5% 57.1% 5,206 6.1% 50.8% 6.6% 63.4% 15,600
7 975 5.5% 62.6% 4,335 5.1% 55.8% 5.4% 68.8% 15,400
8 826 4.7% 67.3% 3,547 4.1% 60.0% 4.4% 73.2% 15,100
9 621 3.5% 70.8% 3,411 4.0% 63.9% 3.7% 76.9% 13,200
10 658 3.7% 74.5% 3,258 3.8% 67.8% 2.4% 79.3% 9,200
11 583 3.3% 77.8% 3,665 4.3% 72.0% 2.7% 82.0% 9,200
12 383 2.2% 80.0% 3,421 4.0% 76.0% 2.6% 84.6% 9,200
13 417 2.4% 82.3% 2,860 3.3% 79.4% 2.1% 86.8% 9,200
14 414 2.3% 84.7% 2,812 3.3% 82.7% 2.1% 88.9% 9,200
15 and older 2,710 15.3% 100.0% 14,838 17.3% 100.0% 11.1% 100.0% 9,200
Subtotal 17,670 100.0% 85,579 100.0%
Age not given 15 0
Total 17,685 85,579
Average age
Median age
7.3
5.9
8.0
6.9
Source:
The Polk Company, Detroit, MI. FURTHER REPRODUCTION PROHIBITED.
Vehicle travel—The average annual vehicle-miles per truck by age were multiplied by the number of trucks in operation by age to estimate the vehicle
travel. Average annual miles per truck by age were generated by ORNL from the 1992 Truck Inventory and Use Survey public use tape provided by U.S.
Department of Commerce, Bureau of the Census, Washington, DC, 1995. (Additional resources: www.polk.com, www.census.gov)
aIncludes trucks from model year 2001 and 2000 which were sold prior to July 1, 2001, and similarly, model years 1971 and 1970 sold prior to
July 1, 1970.
6–10