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Car Sharing

Transport written question – answered on 14th June 2005.

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Photo of Tom Brake Tom Brake Shadow Secretary of State for International Development, Liberal Democrat Spokesperson (International Development)

To ask the Secretary of State for Transport if he will estimate the total reduction in vehicle kilometres that would result from a (a) 10 per cent. (b) 20 per cent. and (c) 50 per cent. increase in average vehicle occupancy.

Photo of Karen Buck Karen Buck Parliamentary Under-Secretary (Department for Transport)

It is estimated that the decrease in vehicle kilometres for cars, taxis and vans as a result of an increase in vehicle occupancy would be as follows:

Vehicle kilometres by cars, taxis and vans (billion)
Increase in vehicle occupancy Resultant percentage change in vehicle kilometres Current (2003) Following decrease in occupancy Change
10 per cent. -9 451 410 41
20 per cent. -17 451 376 75
50 per cent. -33 451 301 150

This assumes that the occupancy increase is a result of increased trip sharing and therefore fewer trips, and not, for example, from a shift of passengers from other modes of transport. It is also assumed that an increase in occupancy does not result in an increase in trip length (i.e. passenger kilometre figures stay fixed).

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