Speed control is at the core of the most recent thinking about road safety. The speed management strategies to reduce speed have been employed to prevent road accident. In order to successful implementation of speed management strategies, it is important to determine the acceptability of specific strategies which influencing from individual drivers attitudes. A methodology has been developed using order probit models to evaluate drivers attitudes towards speed management strategies. These models can determine drivers preferences for different speed management strategies and help planners to investigate the effect of individual characteristics on driversattitude. This study based on a questionnaire survey from a random sampleof 1364 drivers obtained from seven provinces in Thailand. The implementation of these strategies can be divided into two different roads; urban and interurban road. On urban road, it was found that drivers working as a commercial driver showed a negative attitude towards introducing of roundabouts, speed humps and speed limit signs. Highly educated drivers were strongly supportive the introduction of speed limit signs and speed humps. High speed drivers were found to express a strong agreement with introductionof rumble strips but show a disagreement with speed warning signs, speed limit signs and speed humps. On interurban roads, high speed drivers showa strongly negative attitude towards all speed management strategies but express a positive attitude towards the introduction of rumble strips. Highly educated respondents expressed a strongly positive attitude towards introducing of speed limit signs and both ISA with mandatory level and voluntary level. Moreover, drivers having high education were also found to approve all proposed speed enforcement strategies except for introducing of police checkpoint.
Samenvatting