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2012
Evaluation of Comprehension and Legibility of International and Domestic Nonstandard Symbol Signs

Transportation Research Record: Journal of the Transportation Research Board, Issue 2298, pp 46–60

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2012
Perception of Pedestrian Traffic Signals by Pedestrians with Varying Levels of Vision

Transportation Research Record: Journal of the Transportation Research Board, Issue 2299, pp 57–64

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2012
Truck-Mounted Changeable Message Signs with Symbols for Work Zone Operations

Transportation Research Record: Journal of the Transportation Research Board, Issue 2272, pp 78–86

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2011
Traffic Control Devices, Visibility, and Highway–Rail Grade Crossings 2011

Transportation Research Record: Journal of the Transportation Research Board, Issue 2250, 90p

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2011
Guidelines for the Use of Pavement Marking Symbols at Freeway Interchanges

Transportation Research Record: Journal of the Transportation Research Board, Issue 2250, pp 41-48

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2009
Evaluating Understanding of New Symbol Signs

Transportation Research Board 88th Annual Meeting, 18p

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2009
Evaluating Recognition Distance of Proposed Alternative Symbol Sign Designs

Transportation Research Board 88th Annual Meeting, 14p

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2006-10
2006
Simple Way to Use Closed-Circuit Television Road Images for Poor-Visibility Information

Transportation Research Record: Journal of the Transportation Research Board, Issue 1980, pp 105-116

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2004
1999
LEGIBILITY OF TRAFFIC SIGN TEXT AND SYMBOLS

Transportation Research Record, Issue 1692, p. 142-151

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1998-01
BRIDGES AS SYMBOLS: POINT OF VIEW

TR News, Issue 194, p. 31-34

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1998
MEXICAN DRIVER COMPREHENSION OF U.S. TRAFFIC CONTROL DEVICES

Transportation Research Record, Issue 1628, p. 15-24

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1998
EVALUATION OF PROTOTYPE HIGHWAY TOURIST SIGNS FOR ONTARIO

Transportation Research Record, Issue 1628, p. 34-40

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1997
DAYTIME PHOTOMETRIC REQUIREMENTS FOR PEDESTRIAN SIGNALS

Transportation Research Record, Issue 1605, p. 41-48

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1997
1995
TRAFFIC SIGN READING DISTANCES AND TIMES DURING NIGHT DRIVING

Transportation Research Record, Issue 1495, p. 140-146

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1994
Traffic signing, signals, and visibility

Transportation Research Record, Issue 1456, 145p

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1994
AGE DIFFERENCES IN COMPREHENSION OF TRAFFIC SIGN SYMBOLS

Transportation Research Record, Issue 1456, p. 1-10

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1993
DEVELOPMENT OF AN EMERGENCY ZONE SIGN

Transportation Research Record, Issue 1421, p. 36-44

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