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

I
z
Age
(years)
Under 1”
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1.5 and older
Subtotal
Age not given
Table 6.6
Automobiles in Operation and Vehicle Travel by Age, 1970 and 1998
1970 1998 1998 Estimated vehicle
Vehicles Cumulative
(thousands) Percentage percentage
6,288 7.8%
9,299 11.6%
8,816 11.0%
7,878 9.8%
8,538 10.6%
8,506 10.6%
7,116 8.8%
6,268 7.8%
5,058 6.3%
4.1%
2,776 3,267 3.5%
2.1%
1,692 799
1.0%
996 1.2%
794 1.0%
2.336 2.9%
80,427
22
100.0%
7.8%
19.4%
30.3%
40.1%
50.8%
61.3%
70.2%
78.0%
84.3%
88.3%
91.8%
93.9%
94.9%
96.1%
97.1%
100.0%
travel Average
Vehicles Cumulative Cumulative annual miles
(thousands) Percentage percentage Percentage percentage per vehicle
5,619 4.5%
8,049 6.4%
7,564 6.0%
8,926 7.1%
7,878 6.3%
7,953 6.3%
7,320 5.8%
7,536 6.0%
7,620 6.0%
8,187 6.5%
8,008 6.4%
7,439 5.9%
6,870 5.5%
5,774 4.6%
4,636 3.7%
16,587 13.2%
125,966
0
Total 80,449 125,966
Average age 5.6 8.8
4.5% 6.1% 6.1% 15,600
10.9% 6.3% 12.4% 11,200
16.9% 5.9% 18.3% 11,300
23.9% 7.2% 25.5% 11,600
30.2% 6.8% 32.3% 12,400
36.5% 7.0% 39.3% 12,700
42.3% 6.6% 45.9% 12,900
48.3% 7.2% 53.1% 13,800
54.4% 7.8% 60.9% 14,800
60.9% 8.2% 69.2% 14,500
67.2% 5.0% 74.2% 9,000
73.1% 4.7% 78.8% 9,000
78.6% 4.3% 83.1% 9,000
83.2% 3.6% 86.7% 9,000
86.8% 2.9% 89.6% 9,000
100.0% 10.4% 100.0% 9,000
Source:
The Polk Company, Detroit, MI. FURTHER REPRODUCTION PROHIBITED.
Vehicle travel - Average annual miles per auto by age were multiplied by the number of vehicles in operation by age to estimate the vehicle travel. Average
annual miles per auto by age - generated by ORNL from the Nationwide Pemorzal T?*ansportation Survey web site: www-cta.oml.gov/npts.
(Additional resources: www.polk.com, www-cta.oml.gov/npts)
aAutomobiles sold as of July 1 of each year.
- -- - _ _. _ - - - -- - - - -. -. -. -. -. -~ .~ _~ .- -~ .-