Author(s)

J. Cloke & R.E. Layfield

Abstract

The primary concerns of traffic management are to reduce congestion and/or accidents. However traffic management schemes will have an environmental impact, either beneficial or adverse, as a result of the changes in driver behaviour. This in turn has an impact on the operation of vehicles and hence exhaust emissions, noise and vibration. In addition the public's perception of traffic management schemes may be influenced by factors such as disruption encountered during the construction phase, visual intrusion caused by, for example, extra traffic signs, severance and perceived danger. Schemes which reduce congestion can lead to a reduction in the number of stop-start journeys and a corresponding reduction in fuel consumption and vehicle emissions. However, the relief of congestion could lead to trip generation, cancelling out any benefits gained by increasing the average speed

Keywords