Surprisingly little research has assessed speeding in different contexts to the speeding behaviour of drivers. This paper reports a study which measured behavioural intentions and expectations, and self-reported and observed behaviour, to investigate their mutual relationships. The study also aimed to find out if the conventional theory of planned behaviour (TPB), supplemented by adding a measure of affect, could be used to predict behaviour as successfully as it has predicted intentions. The speeds of drivers were recorded; then the drivers were traced and interviewed, using a standard TPB questionnaire, to see how far their self-reported and observed behaviours corresponded. Measurements were taken in relation to three separate road contexts. For each context, significant, but not very large correlations were found between both types of behaviour. It was found possible to measure actual behaviour on the road, and link its observations with later attitude measures.
Abstract