The revival of public transport, and to a lesser extent cycling and walking, for travel to work journeys will require a significant diversion of funds from road-based transport investment. Suburban living, and other effects of town growth have been a key influence on transport through choices made for journey to work. Outer suburban areas are often those with more affluent residents for whom the financial costs of private car ownership may be minimal. The income distribution indicator has clear links with access to, and thus the use of, the various modes of transport. Transport is strongly linked to air pollution.
Air pollution can exacerbate respiratory problems.