United States Department of Transportation
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Freeway Exit Lane Drops in Texas
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1993-11-01
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[PDF-8.22 MB]
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Edition:Final Report: September 1991 - August 1993
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Abstract:This project determines how motorists interpret or respond to various sign and pavement marking alternatives they may or may not have experienced before. Motorist interpretation of signs and markings were obtained through surveys, while field observations were used to measure actual motorist responses to pavement markings. The results from both surveys indicate that motorists have a high level of understanding of the yellow EXIT ONLY panel. Drivers do not understand the use of the white arrow next to a yellow EXIT ONLY panel as well. Over one third of the participants incorrectly interpreted the meaning of the white arrows. Motorists prefer the use of diagrammatic signs as the first of several signs indicating an approaching exit lane drop and the use of the conventional black on yellow panel close to the exit lane drop. Texas motorists understand the meaning of the wide solid white line.
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