Table 1-25,,,,,,,,,,
Average Age of Urban Transit Vehicles (Years),,,,,,,,,,
,1985,1990,1991,1992,1993,1994,1995,1996,1997,1998
 Transit rail,,,,,,,,,,
Commuter rail locomotivesa,16.3,15.7,15.3,15.8,15.6,15.3,15.9,17.6,17.0,14.7
Commuter rail passenger coaches,19.1,17.6,17.3,19.3,18.6,20.1,21.4,24.1,21.6,19.4
Commuter rail self-propelled passenger cars,12.3,15.9,16.5,17.6,18.2,16.0,19.8,21.1,22.3,23.2
Heavy-rail passenger cars,17.1,16.2,16.9,17.7,17.8,15.8,19.3,20.2,21.1,22.0
Light rail vehicles (streetcars),20.6,15.2,16.6,17.0,14.9,16.7,16.8,16.0,15.9,15.7
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 Transit busb,,,,,,,,,,
Articulated  ,3.4,7.6,8.2,9.1,9.5,9.1,10.9,11.5,11.9,11.3
Full-size  ,8.1,8.2,8.0,8.3,8.5,9.9,8.7,8.8,8.6,8.5
Mid-size ,5.6,6.6,6.7,6.8,6.4,7.2,6.9,6.3,5.8,5.7
Small ,4.8,3.9,4.0,4.1,4.0,4.4,4.1,4.1,4.0,4.0
Trolley ,U,10.9,10.3,11.2,12.0,11.1,13.1,14.0,14.7,14.6
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Other,,,,,,,,,,
Vans,3.8,2.8,3.0,3.1,3.1,3.9,3.1,3.1,3.0,2.9
Ferry boats,U,21.7,19.6,22.7,24.7,23.5,23.4,25.3,25.4,25.8
a  Locomotives used in Amtrak intercity passenger services are not included.,,,,,,,,,,
b  Full-size buses have more than 35 seats; mid-size buses have 25-35 seats; small buses have fewer than 25 seats.,,,,,,,,,,
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KEY:  U = data are not available.,,,,,,,,,,
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"SOURCE:  U.S. Department of Transportation, Federal Transit Administration, National Transit Database(Washington, DC: Annual issues), table 28 ",,,,,,,,,,
and similar tables in earlier editions.,,,,,,,,,,