Speed control to enhance speed limit compliance has followed a range of approaches with varying success. This paper presents an overview of the experiments carried out in this area and draws conclusions on the basis of the empirical evidence presented. The following main categories are discussed: a) attitudinal messages to the driver population, b) behavioural messages to the driver population, c) warning letters to offending drivers, d) roadside feedback messages, e) manipulation of road surfaces, f) employment of speed cameras, g) variation in policing strategies and frequencies, h) employment of in-vehicle feedback systems, i) employment of in-vehicle warning systems. All the experiments were considered to be too short-term but the most effective methods involved a feedback system.
Abstract