Public Perception of Safety Messages and Public Service Announcements on Dynamic Message Signs in Rural Areas

Appendix C. Odds Ratio Graphs for Evaluation of Hypotheses

This section includes graphs of odds ratios for each site from the evaluation of select hypotheses. Figure C-1 through Figure C-4 present the odd ratios for each study corridor for the awareness hypothesis of observing an actual safety message and/or PSA on a DMS.

Figure C-5 through Figure C-8 present the odd ratios for each study corridor for the understanding hypothesis on travelers understanding the listed message.

Figure C-9 through Figure C-12 present the odd ratios for each study corridor for the understanding hypothesis on whether the message is understandable.

Figure C-13 through Figure C-16 present the odd ratios for each study corridor for the behavior hypothesis on whether safety-related DMS cause drivers to slow down.

Figure C-17 through Figure C-20 present the odd ratios for each study corridor for the behavior hypothesis on whether travelers do anything differently after seeing the safety or PSA message.

Figure C-21 through Figure C-24 present the odd ratios for each study corridor for the behavior hypothesis on whether safety-related DMS messages cause changes in driving behavior.

Figure C-25 through Figure C-28 present the odd ratios for each study corridor for the opinions hypothesis on traveler agreement that the identified message is appropriate.

Figure C-29 through Figure C-32 present the odd ratios for each study corridor for the opinions hypothesis on traveler agreement that the identified message raised their awareness of the issue.

Figure C-33 through Figure C-36 present the odd ratios for each study corridor for the opinions hypothesis on the best way to communicate safety-related information.

Figure C-37 through Figure C-40 present the odd ratios for each study corridor for the opinions hypothesis on message types that should be displayed on DMS.