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CEVMS and Driver Visual Behavior Study - Non-peer Review Draft Report

Table of Contents

Photo of a commercial electronic variable message sign to the left of a multi-lane highway.

US DOT treskelion logo.
Federal Highway Administration
U.S. Department of Transportation

March 2011

FHWA-HEP-11-014

Download the Printable Version [PDF, 3.1 MB]

Table of Contents

List of Figures

Figure 1. Smart Eye Face Camera Placement
Figure 2. FHWA's Field Research Vehicle
Figure 3. CCD Photometer and Laptop Setup in Vehicle
Figure 4. ProMetric Software Interface
Figure 5. Regions of Background for Contrast Ratio Analysis
Figure 6. Contrast Background Differences
Figure 7. Data Collection Zone with a Target CEVMS
Figure 8. Visually Complex Data Collection Area with 2 CEVMS and 10 Non-Target Standard Billboards
Figure 9. Data Collection Zone with a Target Standard Billboard
Figure 10. Data Collection Zone with Natural Environment
Figure 11. Data Collection Zone with Built Environment
Figure 12. Mean Subband Entropy Measures for Each of the Data Collection Zone Types
Figure 13. Panoramic Video with the Eye-Tracking Cursor (Highlighted by the Green Circle) in the Center of a CEVMS
Figure 14. Percent of Time to Road Ahead as a Function of Data Collection Zone Type
Figure 15. The Proportion of Gaze Duration for CEVMS and Standard Billboards under Daytime and Nighttime Driving Conditions
Figure 16. Data Collection Zone 19
Figure 17. Percent of Time Looking at Miscellaneous as a Function of Data Collection Zone Type
Figure 18. Percent of Time Looking to the Gauge Cluster as a Function of Data Collection Zone Type
Figure 19. Percentage of Time Glancing at Unknown Objects as a Function of Data Collection Zone Type
Figure 20. Percent of Time Glancing at Target Advertising as a Function of Data Collection Zone Type
Figure 21. Percent of Time Looking at the Road Ahead as a Function of Data Collection Zone Type
Figure 22. Mean Duration of Glances at Target Billboards as a Function of Data Collection Zone Type
Figure 23. Example of a CEVMS Data Collection Zone with High Visual Complexity
Figure 24. Example of CEVMS Data Collection Zone with Low Visual Complexity
Figure 25. Example of a Standard Billboard Data Collection Zone with High Visual Complexity
Figure 26. Example of a Standard Billboard Data Collection Zone with Low Visual Complexity
Figure 27. Subband Entropy Measures for the Data Collection Zones
Figure 28. Percentage of Time Glancing at Target Billboards as a Function of Visual Complexity and Time of Day
Figure 29. Proportion of Gaze Duration for CEVMS and Standard Billboards under Daytime and Nighttime Driving Conditions
Figure 30. Data Collection Zone 17 in Richmond
Figure 31. Percentage of Time Spent Glancing at Miscellaneous as a Function of Data Collection Zone Type and Visual Complexity
Figure 32. Percentage of Time Spent Glancing at the Gauge Cluster as a Function of Data Collection Zone Type

List of Tables

Table 1. Distribution of CEVMS by Roadway Classification for Various Cities
Table 2. Inventory of Target Billboards in Reading with Relevant Parameters
Table 3. Summary of Luminance (cd/m2) and Contrast (Weber ratio) Measurements in Reading
Table 4. Mean Percent of Time Looking to Areas of Interest Based on Data Collection Zone Type
Table 5. Total Number of Gazes for the CEVMS and Standard Billboard Conditions as a Function of Time of Day
Table 6. Summary of Long Gazes to Off-Premises Advertising in Reading
Table 7. Mean Percentage of Time Looking at Areas of Interest Based on Data Collection Zone Type
Table 8. Inventory of Target Billboards in Richmond with Relevant Parameters
Table 9. Advertising Conditions by Level of Visual Complexity
Table 10. Luminance Values (cd/m2) for the Low and High Visual Complexity Conditions
Table 11. Weber contrast values in low and high visual complexity environments
Table 12. Mean Percentage of Time for All Object Categories as a Function of Data Collection Zone Type for Low and High Visual Complexity Data Collection Zones During the Daytime
Table 13. Mean Percentage of Time for all Object Categories as a Function of Data Collection Zone Type for Low and High Visual Complexity Data Collection Zones During The Nighttime
Table 14. Frequencies of Glances for the CEVMS and Standard Billboard Conditions as a Function of Time of Day
Table 15. Summary of Long Glances at Off-premise Advertising in Richmond
Table 16. Number of Glances per Sign to CEVMS and Standard Billboards in Day and Night Conditions for Both Experiments
Updated: 6/27/2017
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