Field and laboratory studies of warning symbol sign legibility distance

Field and laboratory studies of warning symbol sign legibility distance

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Visual Screening of Participants A Snellen chart viewed from 6.1 meters (20 feet) was used to measure corrected Snellen static visual ... Equivalent Visual Vistech VCTS Vehicle and Test Area A 1989 Honda Accord was instrumented with a fifth wheel measuring device. The fifth wheel was mounted to the rear of the car by a tow bar. Instrumentation wiring from the fifth wheel was fed through the trunk to a digital readout box, mounted to a platform fitting between the two front seats.


Title:Field and laboratory studies of warning symbol sign legibility distance
Author: Frances A. Greene, A. Garcia-Diaz, J. J. Congleton, Texas Transportation Institute, Rodger J. Koppa, R. D. Huchingson, Southwest Region University Transportation Center (U.S.), R. D. Zellner, University Transportation Centers Program (U.S.)
Publisher: - 1995
ISBN-13:

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