Excessive car use is a particular and likely manifestation of excessive travel under
conditions where a cultural phenomenon of car (or motorcycle) dependence develops, in
combination with a number of potential price distortions that favour car use. These might
include: fuel subsidies to other sectors with unintended but predictable effects on the transport
sector; general subsidies to road users built into the financing of how roads are constructed and
maintained, and ancillary services delivered; hidden and fixed costs in road infrastructure and
land-use provision, which send unclear price signals to potential travellers; and secondary price
distortions in land values that incorporat e or capitalize these other (primary) distortions.