Helmut T. Zwahlen

发表

Evaluation of the Accuracy of a Real-Time Travel Time Prediction System in a Freeway Construction Work Zone

Helmut T. Zwahlen, Andrew Russ, H. T. Zwahlen, 2002 .

Crash Reduction Factors for Education and Enforcement

Helmut T. Zwahlen, Kiran R Suravaram, H. T. Zwahlen, 2007 .

Traffic-Signal Group Relamping Model

Helmut T. Zwahlen, Andrew Russ, Şahika Vatan, 2004 .

Safety Aspects of Sophisticated In-Vehicle Information Displays and Controls

Helmut T. Zwahlen, David P. DeBald, David P. Debald, 1986 .

Effectiveness of Ground-Mounted Diagrammatic Advance Guide Signs for Freeway Entrance Ramps

Helmut T. Zwahlen, Andrew Russ, James M. Roth, 2003 .

An Evaluation of Mounting Step Dimensions and Handhold/Handrail Dimensions on Semi-Trucks, Agricultural and Industrial Vehicles

Helmut T. Zwahlen, Richard J. Gerth, Dae Sig Kim, 1995 .

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?

Anil Mital, Helmut T. Zwahlen, Colin Drury, 1988 .

Visibility of new pavement markings at night under low-beam illumination

Helmut T. Zwahlen, Thomas Schnell, T. Schnell, 1995 .

Modeling the Temperature Behavior of Concrete Bridge Decks as a Function of Rapid Change in Air Temperature Using Finite Element Analysis

Helmut T. Zwahlen, Kiran R Suravaram, Amey Gowaikar, 2007 .

Phase II, improved work zone design guidelines and enhanced model of traffic delays in work zones : final report, March 2009.

Helmut T. Zwahlen, Erdinc Oner, 2009 .

REVIEW OF LEGIBILITY RELATIONSHIPS WITHIN THE CONTEXT OF TEXTUAL INFORMATION PRESENTATION

Helmut T. Zwahlen, Thomas Schnell, Murali Sunkara, 1995 .

Nighttime Expert Panel and Photometric Evaluations of Unlighted Overhead Guide Signs

Helmut T. Zwahlen, Andrew Russ, Sahika Vatan, 2003 .

Visual Gap Perception: Judgment Performance at Different Times and the Evaluation of Psychophysical Methods

Helmut T. Zwahlen, 1978 .

Influence of Pavement Marking Angular Systems on Visibility Predictions Using Computer Models

Helmut T. Zwahlen, Thomas Schnell, Tim Donahue, 2001 .

STOP AHEAD AND STOP SIGNS AND THEIR EFFECT ON DRIVER EYE SCANNING AND DRIVING PERFORMANCE

Helmut T. Zwahlen, 1988 .

CONSPICUITY OF RETROREFLECTIVE SIGNS AND DEVICES AT NIGHT WHEN DRIVING WITH ONLY ONE HEADLAMP WORKING

Helmut T. Zwahlen, John W. Rice, Jing Yu, 1990 .

TRAFFIC SIGN READING DISTANCES AND TIMES DURING NIGHT DRIVING

Helmut T. Zwahlen, 1995 .

COLOR AND SHAPE RECOGNITION OF REFLECTORIZED TARGETS UNDER AUTOMOBILE LOW-BEAM ILLUMINATION AT NIGHT

Helmut T. Zwahlen, Jing Wu, 1991 .

Nighttime Curvature Perception of Drivers as a Function of the Number of Curve Delineation Devices

Helmut T. Zwahlen, 1994 .

Field Evaluation of Unlighted Overhead Guide Signs Using Older Drivers

Helmut T. Zwahlen, Sahika Vatan, Andrew Russ, 2003 .

POSITION ACCURACY WHEN PUSHING PUSHBUTTONS IN A CAR AS A FUNCTION OF CAR SPEED AND LOCATION: IMPLICATIONS FOR DESIGN

David Kellmeyer, Helmut T. Zwahlen, 1991 .

Human Factors Opportunities to Improve Ohio's Transportation System

Helmut T. Zwahlen, Erdinc Oner, Andrew Russ, 2005 .