TRANSPORTATION ENERGY DATA BOOK: EDITION 20 - Center for ...

Table 6.7
Trucks in Operation and Vehicle Travel by Age, 1970 and 1998
1998 Estimated
1970 1998 vehicle travel Average annual
Age Vehicles Cumulative Vehicles Cumulative Cumulative miles per
(years) (thousands) Percentage percentage (thousands) Percentage percentage Percentage percentage vehicle
Under 1” 1,262 7.1% 7.1% 5,030 6.4% 6.4% 7.9% 7.9% 17,500
1 1,881 10.6% 17.8% 6,550 8.3% 14.6% 11.3% 19.1% 19,200
2 1,536 8.7% 26.5% 5,545 7.0% 21.7% 9.8% 29.0% 19,800
3 1,428 8.1% 34.6% 6,165 7.8% 29.5% 9.9% 38.9% 17,900
4 1,483 8.4% 43.0% 5,593 7.1% 36.5% 8.8% 47.6% 17,500
5 1,339 7.6% 50.5% 4,711 6.0% 42.5% 7.2% 54.8% 17,000
6 1,154 6.5% 57.1% 3,870 4.9% 47.4% 5.4% 60.2% 15,600
7 975 5.5% 62.6% 3,800 4.8% 52.2% 5.2% 65.4% 15,400
8 826 4.7% 67.3% 3,647 4.6% 56.8% 4.9% 70.3% 15,100
9 621 3.5% 70.8% 4,171 5.3% 62.1% 4.9% 75.3% 13,200
10 658 3.7% 74.5% 3,979 5.0% 67.1% 3.3% 78.6% 9,200
11 583 3.3% 77.8% 3,418 4.3% 71.4% 2.8% 81.4% 9,200
12 383 2.2% 80.0% 3,448 4.4% 75.8% 2.8% 84.2% 9,200
13 417 2.4% 82.3% 2,855 3.6% 79.4% 2.4% 86.6% 9,200
14 414 2.3% 84.7% 2,367 3.0% 82.4% 2.0% 88.5% 9,200
15 and older 2,710 15.3% 100.0% 13,928 17.6% 100.0% ,, 50, 100.0% 9,200
Subtotal 17,670 100.0% 79,077 100.0%
Age not given 15 0
Total 17,685 79,077
Average age 7.3 8.3
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)
“Trucks sold as of July 1 of each year.