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Federal Highway Administration
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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
REPORT |
This report is an archived publication and may contain dated technical, contact, and link information |
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Publication Number: FHWA-HRT-17-048 Date: May 2018 |
Publication Number: FHWA-HRT-17-048 Date: May 2018 |
This appendix provides a complete catalog of the signing alternatives (e.g., A, C, L, and E) used for testing in the simulator, in conjunction with diagrams of the geometric layouts associated with each. Each signing alternative was designed to accommodate the three possible destinations for each of the alternatives in a given layout. These movements are considered THRU (T), LEFT (L), and RIGHT (R). Participants were told that their task was to follow the signs toward Greenville; Greenville was always the destination to which they were instructed to drive. For example, a participant might be trying to navigate to Greenville on Route 28 without being told a cardinal direction for Route 28. Using the information provided on overhead guide signs, the participant would either continue THRU to Greenville or exit the interchange to the RIGHT or the LEFT toward Greenville based on the experimental scenario. As there is no LEFT movement in Layout A, a Destination of “L” for this layout represents the second RIGHT movement.
Additional information on this project’s research design can be found in chapter 6.