TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 476: Practices for Permitting Superheavy Load Movements on Highway Pavements documents the practices followed in issuing permits for overweight and superheavy commercial vehicles (SHCVs) or “superloads.” Superloads are trucks that exceed the thresholds set for overweight vehicles, but are allowed to operate with annual permits throughout state highway networks.
National Academies of Sciences, Engineering, and Medicine. 2015. Practices for Permitting Superheavy Load Movements on Highway Pavements. Washington, DC: The National Academies Press. https://doi.org/10.17226/22156.
Chapters | skim | |
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Front Matter | i-vi | |
Summary | 1-3 | |
Chapter One - Introduction | 4-4 | |
Chapter Two - Literature Review | 5-17 | |
Chapter Three - Survey Results | 18-24 | |
Chapter Four - Case Examples | 25-26 | |
Chapter Five - Conclusions | 27-28 | |
References | 29-30 | |
Appendix A - Survey Questionnaire | 31-39 | |
Appendix B - List of Responding Agencies | 40-40 | |
Appendix C - Raw Survey Results | 41-295 |
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