Source: data from R. Tolley and B. Turton (1995) Transport Systems,
Policy and Planning, New York: Longman, p. 184.
Performance of Urban Transport Modes
Modal choice is linked with the territorial usage of transportation
and consequently with its spatial imprint. The above graph portrays
spatial, speed and performance characteristics of major urban transportation
modes. Performance is simply the ratio of speed over space consumption.
Public transit consumes on average 10 times less space than individual
transportation. Thus, in car dependent cities a much larger amount of
space must be allocated to transportation than in transit oriented cities.
For instance, 70% of the land use of Los Angeles is attributed to the
car, making it one of the most car oriented city in the world. When
building a new facility such as a skyscraper, at least one parking space
per employee must be allocated.