Highway Traffic and Safety Analyses Lecture 27 Internet

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

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

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

Website Design

Website Design

Data Collection

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

Evaluation of Survey Tool • User feedback • Common complaints – Map outdated – More options desired

Motorist Concerns

Sources of Motorist Concern

Top Reported Locations

Can Motorists Point Out Hazard? Evidence

Effectiveness of Detecting Hazard

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

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. De. Salle, Perception-base road hazard identification with Internet support, Applied Health Economics and Health Policy, Open Mind Journals, Vol. 2, No. 4, 2003, pp. 191 -200.