Night Visibility of Overhead Guide Signs
Night Visibility of Overhead Guide Signs

Author: Donald A. Gordon

Publisher:

Published: 1985

Total Pages: 108

ISBN-13:

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Considers adequacy of proposed guidelines which will eliminate illumination and the use of reflective sign backgrounds in highway guide signs.

Guidelines for Nighttime Visibility of Overhead Signs
Guidelines for Nighttime Visibility of Overhead Signs

Author: Paul John Carlson

Publisher:

Published: 2016

Total Pages: 84

ISBN-13:

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Chapter 1. Introduction -- chapter 2. Background -- chapter 3. Closed-course study -- chapter 4. Open-Road study -- chapter 5. Research findings -- References -- appendix A. Incremental effects of light sources and sign sheeting on legend luminance for overhead guide signs -- appendix B. Assessment of background complexity using digital images of roadway scenes by image processing -- appendix C. Open-road study details -- appendix D. Guidelines for Nighttime overhead sign visibility.

Overhead Guide Sign Visibility Factors
Overhead Guide Sign Visibility Factors

Author: Anthony C. Stein

Publisher:

Published: 1989

Total Pages: 38

ISBN-13:

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The project discussed in this report concerned the night use of overhead guide signs, including button and reflectorized copy and all practical combinations of reflectorized and opaque backgrounds. This project was a follow up effort to the literature review by Gordon. Gordon's review found areas requiring further investigation, including the comparison of nonilluminated nonretroreflectorized signs with both illuminated nonretroreflectorized and retroreflectorized signs.