Transportation energy data book: edition 23 - Oak Ridge National ...

TRANSPORTATION ENERGY DATA BOOK: EDITION 22—2002
Age
(years)
July 1, 1970.
Vehicles
(thousands
)
Table 3.7
Trucks in Operation and Vehicle Travel by Age, 1970 and 2001
1970 2001
Percentag
e
Cumulative
percentage
Vehicles
(thousands) Percentag
e
Cumulative
percentage Percentag
e
2001 Estimated
vehicle travel Average annual
Cumulative
percentage
miles per
vehicle
Under 1 a 1,262 7.1% 7.1% 6,213 7.1% 7.1% 8.5% 8.5% 17,500
1 1,881 10.6% 17.8% 7,958 9.0% 16.1% 12.0% 20.6% 19,200
2 1,536 8.7% 26.5% 7,522 8.6% 24.7% 11.7% 32.3% 19,800
3 1,428 8.1% 34.6% 6,398 7.3% 31.9% 9.0% 41.3% 17,900
4 1,483 8.4% 43.0% 6,109 6.9% 38.9% 8.4% 49.7% 17,500
5 1,339 7.6% 50.5% 5,122 5.8% 44.7% 6.8% 56.6% 17,000
6 1,154 6.5% 57.1% 5,574 6.3% 51.0% 6.8% 63.4% 15,600
7 975 5.5% 62.6% 5,042 5.7% 56.8% 6.1% 69.5% 15,400
8 826 4.7% 67.3% 4,148 4.7% 61.5% 4.9% 74.4% 15,100
9 621 3.5% 70.8% 3,395 3.9% 65.3% 3.5% 77.9% 13,200
10 658 3.7% 74.5% 3,221 3.7% 69.0% 2.3% 80.3% 9,200
11 583 3.3% 77.8% 3,039 3.5% 72.5% 2.2% 82.5% 9,200
12 383 2.2% 80.0% 3,345 3.8% 76.3% 2.4% 84.9% 9,200
13 417 2.4% 82.3% 3,112 3.5% 79.8% 2.3% 89.1% 9,200
14 414 2.3% 84.7% 2,544 2.9% 82.7% 1.8% 89.0% 9,200
15 and older 2,710 15.3% 100.0% 15,227 17.3% 100.0% 11.0% 100.0% 9,200
Subtotal 17,670 100.0% 87,969 100.0% 100.0%
Age not given 15 0
Total 17,685 87,969
Average age
Median age
7.3
5.9
7.9
6.8
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 1997 Truck Inventory and Use Survey public use tape provided
by U.S. Department of Commerce, Bureau of the Census, Washington, DC, 2000. (Additional resources: www.polk.com, www.census.gov)
a Includes trucks from model year 2002 and 2001 which were sold prior to July 1, 2002, and similarly, model years 1971 and 1970 sold prior to
3–10