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IFEU Heidelberg

2.3 Life time performance

The total life-time performance of a vehicle depends on its daily use, rather than the life- time itself. While private vehicles, like passenger cars, are parked most of the time rather than used, commercial vehicles are used as much as possible to generate the maximum revenue. Passenger cars with a daily performance of about 30 kilometres are used very little compared to long distance trains, which are used most of the time with up to more than 1’500 daily kilometres for high speed trains.

Chart 2: Average life-time performance of selected vehicle examples Life-time performance [Mio. km]

16

Road vehicles

Rail vehicles

14

12

10

8

6

4

2

0,2

0,2

1

1,2

1,2

3

0

Car (gasoline)

Car (diesel)

City bus

Long distance bus

Articulated truck

Subway

Source: IFEU 2002 from various sources

4

8

15

Regional train

Long distance

High speed passenger train

passenger train

8

8

Long

Long

distance distance

freight train freight train

(electric)

(diesel)

IFEU 2003

The average life-time performance is higher for rail vehicles compared to road vehi- cles (Chart 2), not only because of their high annual performance but also due to their long operational life-time in the range of 30 years.

2.4 Life time energy and CO2 savings for selected vehicles

The specific energy savings and the life-time performance are variables which result in the life-time operational energy savings for a 100 kg weight reduction (Chart 3). Cargo vehicles like trucks and freight trains can also achieve indirect energy savings by a ca- pacity for a higher payload in the case of weight limited cargo. This has been taken into account based on the assumptions made in the respective sections. The life-time en- ergy savings are generally higher for rail vehicles compared to road vehicles, mainly due to the higher life-time performance. Regional trains have over seven times higher life-time primary energy savings than long distance buses because of their high specific energy savings in addition to a high life-time performance. Only city buses have out- standingly high energy savings among the road vehicles. This is also due to the combi- nation of high specific energy savings in addition to a high life-time performance. Since

Energy savings by light-weighting

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