Field evaluation of unlighted overhead guide signs using older drivers /
prepared by Helmut T. Zwahlen, Andrew Russ, and Sahika Vatan.

APA Citation

Zwahlen, H. T., Vatan, S., Russ, A. Cairnes., Ohio. Office of Traffic Engineering., Ohio Research Institute for Transportation and the Environment. Human Factors and Ergonomics Laboratory. (2003). Field evaluation of unlighted overhead guide signs using older drivers. Athens, Ohio: Human Factors and Ergonomics Laboratory, Dept. of Industrial and Manufacturing Systems Engineering .

MLA Citation

Ohio Research Institute for Transportation and the Environment. Human Factors and Ergonomics Laboratory, et al.. Field Evaluation of Unlighted Overhead Guide Signs Using Older Drivers. Athens, Ohio: Human Factors and Ergonomics Laboratory, Dept. of Industrial and Manufacturing Systems Engineering , 2003.