1. Lecture 27: Internet-Supported Evaluation of Highway Safety
Highway Traffic and Safety Analyses
Lecture 27: Internet-Supported Evaluation of Highway Safety
Purdue University
School of Civil Engineering
West Lafayette

2. Presentation Outline Research Goals Website Design Data Collection
Survey Tool Evaluation
Evaluation of Safety Information
Conclusions

3. Research Goals
Develop a prototype website to obtain motorist feedback about hazardous locations
Investigate the relationship between driver perception and highway safety

4. Website Design

5. Website Design

6. Data Collection

7. Data Collection 146 responses Almost all were complete (non-blank)
95 intersections

8. Evaluation of Survey Tool
User feedback
Common complaints
Map outdated
More options desired

9. Motorist Concerns

10. Sources of Motorist Concern

11. Top Reported Locations

12. Can Motorists Point Out Hazard?
Evidence

13. Effectiveness of Detecting Hazard

14. Evaluation of Safety Information
Gender and Age Effects
No significant difference between male and female respondents
Efficiency Rate tends to increase as respondent age increases

15. Conclusions Much safety information to be gained through the survey
Locations indicated by motorists tend to be more hazardous than those not indicated
Gender and age of respondents have no significant effects
Considering only responses that include first-hand information is justified
Motorist feedback is a good supplement to crash data
Tarko, A. and B. DeSalle, Perception-base road hazard identification with Internet support, Applied Health Economics and Health Policy, Open Mind Journals, Vol.2, No.4, 2003, pp