This research investigates the safety and convenience of cyclists at sites where carriageways have been narrowed by the use of central islands, pinch points and chicanes. A literature review of previous work on cycling and road narrowings was undertaken. Three methods were then used to examine the issues. Firstly, information was obtained from local highway authorities and cyclists' organisations, followed by a reconnaissance survey of 28 road narrowing schemes, recording site details. Secondly, 15 selected road narrowings were filmed to obtain data on cyclist and driver manoeuvres. This included sites with and without special provision for cyclists. Thirdly, attitude surveys with cyclists were carried out at sites in cyclists were carried out at sites in Oxford and London. A small number of potentially hazardous manoeuvres were observed, but greater concern was expressed in the interviews. Cyclists favoured those sites where special facilities for cyclists had been provided, though they had reservations about certain design details. The relationships between vehicle flows, motor vehicle speeds, running lane widths, cyclists' route and driver behaviour are examined. The implications of particular designs are identified. The strengths and limitations of various survey methods are also recognised. (A)
Abstract