1. Risk behaviors of road users during New Year festival in Thailand;Siwarochana,2004
2. Model development for traffic injury prevention by speed control on Highway No. 2 in Khon Kaen province, Report No.147-2006-11;Kulleab,2006
3. Safety Driving Speed;Thailand Accident Research Center,2008
4. A Survey of Vehicle Speeds on Highways Using Automated Traffic Counters, Evaluation Group;Department of Highways,2009
5. On the effectiveness of speed enforcement in Thailand: current issues and need for changes and new approaches;Jiwattanakulpaisarn,2009