Driving anger scale validation : Relationship of driving anger with the aberrant driving behaviour of truck drivers

Truck-related accidents in China have substantially increased. Truck driver safety issues have elicited considerable attention from transportation safety researchers. Driving anger is one of the most important factors that influence driving behaviour. However, little knowledge about the driving anger of truck drivers was available in the relevant literature. This study aimed to (1) provide empirical data about the driving anger of truck drivers, (2) examine the factor structure and psychometric properties of the driving anger scale (DAS) with a sample of truck drivers and (3) explore how the driving anger of truck drivers predicts their aberrant driving behaviour. The three-part survey data from 475 randomly selected truck drivers were collected in this study. The self-reported aberrant driving behaviour that was measured with the driving behaviour questionnaire was predicted by the drivers’ DAS ratings. One-factor structure and three-factor structure of the DAS were tested for Chinese truck drivers. Results indicated that the one-factor structure of the six-item DAS was more suitable for truck drivers than the three-factor structure. The factor structure of the DAS for Chinese truck drivers was consistent with the structure of the original version by Deffenbacher, Oetting, and Lynch (1994). The internal consistency, convergent validity and criterion-related validity of the six-item DAS were acceptable. Driving anger amongst truck drivers can be used to predict their aberrant driving behaviour. This study identified several practical implications to reduce the driving anger of truck drivers and consequently improve their driving behaviour.