No description available of Helmut T. Zwahlen...
Zwahlen, Helmut T. (1995): Driver Nighttime Visual Detection of Diffuse or Retroreflective Objects within the Context of Traffic Safety. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. .
Zwahlen, Helmut T., Kim, Dae Sig and Gerth, Richard J. (1995): An Evaluation of Mounting Step Dimensions and Handhold/Handrail Dimensions on Semi-Trucks, Agricultural, and Industrial Vehicles. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. pp. 1028-1032.
Zwahlen, Helmut T. (1993): Evaluation of Pushbutton Arrangements in Automobiles. In: Proceedings of the Human Factors and Ergonomics Society 37th Annual Meeting 1993. pp. 969-973.
Zwahlen, Helmut T., Hu, Xiaohong, Sunkara, Murali and Duffus, LuAnn M. (1991): Recognition of Traffic Sign Symbols in the Field during Daytime and Nighttime. In: Proceedings of the Human Factors Society 35th Annual Meeting 1991. pp. 1058-1062.
Zwahlen, Helmut T., Yu, Jing, Xiong, Shaolin, Li, Qi and Rice, John W. (1989): Night Time Shape Recognition of Reflectorized Warning Plates as a Function of Full Reflectorization, Borders Only Reflectorization and Target Brightness. In: Proceedings of the Human Factors Society 33rd Annual Meeting 1989. pp. 970-974.
Zwahlen, Helmut T., Aghazadeh, Fereydoun, Drury, Colin G., Gardner-Bonneau, Daryle Jean, Johnson, Steven, Konz, Stephan, Mital, Anil and Sanders, Mark S. (1988): Undergraduate and Graduate Courses in Industrial Ergonomics, Industrial Human Factors and Industrial Safety -- Where are We Today and Where Do We Need to Be in the Future?. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. p. 495.
Zwahlen, Helmut T., Gardner-Bonneau, Daryle Jean, Adams, Charles C. and Miller, Michael E. (1988): Night Time Recognition of Reflectorized Warning Plates as a Function of Shape and Target Brightness. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 971-975.
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