The behavior of dangerous driving is considered the main cause of increase in road accidents. The present study aimed at (1) studying the dangerous driving indexes among university students, (2) developing the Dula index to measure the behavior of dangerous driving of Saudi university students, (3) identifying the significant differences of dangerous driving behaviors according to the educational level and age, and (4) identifying the relationship between the behavior of dangerous driving and the impulsive behavior of drivers and the driving angry expressions.

Methods: The tools of the study, which were selected in a systematic stratified way, were applied to 640 Saudi university students to check the validity of the Dula index. The tools of the study included: the dangerous driving Dula inventory (DDDI), driver behavior questionnaire, barratt impulsiveness scale (BIS) and driving anger expression inventory (DAEI). Results: The results of this study showed that this tool, when associated with the barratt impulsiveness scale (BIS) and the driving anger expression inventory (DAEI), can have adequate psychometric properties through internal consistency, persistence and honesty. The factor analysis results concluded that the tool has three factors; namely, aggressive driving, negative emotions and dangerous driving. In addition, the study findings pointed out that the average scores of students dangerous driving were at a low level. There are no statistical differences in the behavior of dangerous driving according to age and educational level.

Recommendations: The study recommends the traffic departments in the Kingdom of Saudi Arabia to adopt this measurement to evaluate the behaviors of dangerous driving among drivers who are intending to obtain their driving license, especially teenagers.