Practices to Manage Traffic Sign Retroreflectivity

Front Cover
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 431: Practices to Manage Traffic Sign Retroreflectivity includes examples of practices that illustrate how different types of transportation agencies might meet federal retroreflectivity requirements for traffic signs.
 

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Contents

Summary
1
Chapter One Introduction
3
Chapter Two Description of Sign Retroreflectivity Maintenance Methods
6
Chapter Three Range of Practices
14
Chapter Four Case Studies
22
Chapter Five Effective Practices
27
Chapter Six Research in Progress and Research Needs
29
Chapter Seven Conclusions
30
References
31
Appendix A Minimum Maintained Retroreflectivity Levels Resources
32
Appendix B Telephone Survey
38
Appendix C Survey Participants
40
Appendix D Myths and Other Frequently Asked Questions
43
Copyright

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