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2023
Sign Life Expectancy on Low-Volume Roads in Iowa

Transportation Research Record: Journal of the Transportation Research Board

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2015
Performance Evaluation of Retroreflective Traffic Signs

Transportation Research Board 94th Annual Meeting, 11p

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2015
Analysis of the Effects of Coarse Particulate Matter (PM10) on Traffic Sign Retroreflectivity

Transportation Research Board 94th Annual Meeting, 16p

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2014
Evaluation of Sign Sheeting Service Life in Wyoming

Transportation Research Board 93rd Annual Meeting, 18p

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2013-02
Development of a Recycled Substrate Material for Road Signs

Transportation Research Circular, Issue E-C172, pp 145-148

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2013
Applying the Sign Luminance Computation Model to Study Effects of Other Vehicles on Sign Luminance

Transportation Research Board 92nd Annual Meeting, 18p

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2013
Enhanced Sign Legibility and Recognition with the Clearview Font: A Field Study of Illinois Drivers

Transportation Research Board 92nd Annual Meeting, 18p

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2011
Analysis of Retroreflectivity and Color Degradation in Sign Sheeting

Transportation Research Board 90th Annual Meeting, 14p

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2011
An Asset Management Framework for Addressing the New MUTCD Traffic Sign Retroreflectivity Standards

Transportation Research Board 90th Annual Meeting, 19p

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2009
Examining the Nighttime Legibility of Internally Illuminated Traffic Signs with Specific Distance-Luminance Profiles

Transportation Research Board 88th Annual Meeting, 21p

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2008
In-The-Field and Modeled Luminance of Retroreflective Sign Sheetings

Transportation Research Board 87th Annual Meeting, 23p

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2008
Driver-Focused Design of Retroreflective Sheeting for Traffic Signs

Transportation Research Board 87th Annual Meeting, 17p

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2007-04
Analysis of Modeled Versus On-the-Road Field Luminance of Retroreflective Signs

18th Biennial TRB Visibility Symposium, 26p

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2007-04
Driver-Focused Design of Retroreflective Sheeting for Traffic Signs

18th Biennial TRB Visibility Symposium, 16p

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2007
SIFT-Based Road Sign Inventory System

Transportation Research Board 86th Annual Meeting, 21p

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2006-03
Research Pays Off: Improving Guide Sign Legibility: New Lettering Reads Larger, Clearer, Farther

TR News, Issue 243, pp 34-35

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2005
Maximizing Legibility of Unlit Freeway Guide Signs with Clearview Font and Combinations of Retroreflective Sheeting Materials

Transportation Research Record: Journal of the Transportation Research Board, Issue 1918, pp 26-34

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2005
National Calibration Facility for Retroreflective Traffic Control Materials

NCHRP Web-Only Document, Issue 72, 154p

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2004
VALIDATION OF PHOTOMETRIC MODELING TECHNIQUES FOR RETROREFLECTIVE TRAFFIC SIGNS

Transportation Research Record, Issue 1862, p. 109-118

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2003
LEGIBILITY OF OVERHEAD GUIDE SIGNS WITH ENCAPSULATED VERSUS MICROPRISMATIC RETROREFLECTIVE SHEETING

Transportation Research Record, Issue 1844, p. 59-66

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2003
NIGHTTIME EXPERT PANEL AND PHOTOMETRIC EVALUATIONS OF UNLIGHTED OVERHEAD GUIDE SIGNS (WITH DISCUSSION AND CLOSURE)

Transportation Research Record, Issue 1844, p. 67-78

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2003
REDUCTIONS IN TRAFFIC SIGN RETROREFLECTIVITY CAUSED BY FROST AND DEW

Transportation Research Record, Issue 1844, p. 79-84

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2003
EVALUATING SPEED-REDUCTION STRATEGIES FOR HIGHWAY WORK ZONES

Transportation Research Record, Issue 1824, p. 44-53

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2002
EVALUATION OF CLEARVIEW ON FREEWAY GUIDE SIGNS WITH MICROPRISMATIC SHEETING

Transportation Research Record, Issue 1801, p. 27-38

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2002
RETROREFLECTIVE MATERIAL SPECIFICATIONS AND ON-ROAD SIGN PERFORMANCE

Transportation Research Record, Issue 1801, p. 61-72

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