Source: some data from Living Planet Report, 2006 and Summary
result of second Eurostat questionnaire on CFC on public
infrastructure, DOC.CFC 15, Eurostat, 2003.
Lifespan (Life Cycle) of Main Transport Assets
The lifespan of a transport asset is the approximate number of years
in which it is expected to perform under normal operating conditions
while receiving regular maintenance (average lifespan). Because of the various
construction materials, the techniques used and operating
conditions, the lifespan is an approximate figure since higher
engineering requirements may extend the lifespan further
(optimum lifespan). For complex
transport infrastructure, such as a port or an airport, lifespan
considerations are nuanced by the respective lifespans of
components such as piers, runways, crane equipment and
individual buildings (e.g. terminals, warehouses). All of these
facilities can be maintained and upgraded separately.
Among the major transport assets,
the automobile is having the shortest lifespan in the range of 8 to
10 years depending on the level of usage and the operating environment.
There is however evidence that the lifespan of cars is
due to technical improvements.
A properly maintained jet plane can easily last 20 years, with some
lasting beyond 30 years.
Rail lines can last for decades, if not a century and a half (depending
on the construction materials used), but require a constant and capital
intensive maintenance. Transport investments must thus look closely
on the expected lifespan of an infrastructure to insure a proper amortization
and match the investment time range with the expected lifespan
of the transport asset.