Delineation of Linear Roadside Hardware Systems and Roadside Obstacles (2026)

Chapter: 2 Background and Current Practice

Previous Chapter: 1 Introduction
Suggested Citation: "2 Background and Current Practice." National Academies of Sciences, Engineering, and Medicine. 2026. Delineation of Linear Roadside Hardware Systems and Roadside Obstacles. Washington, DC: The National Academies Press. doi: 10.17226/29352.
Page 6
Suggested Citation: "2 Background and Current Practice." National Academies of Sciences, Engineering, and Medicine. 2026. Delineation of Linear Roadside Hardware Systems and Roadside Obstacles. Washington, DC: The National Academies Press. doi: 10.17226/29352.
Page 7
Suggested Citation: "2 Background and Current Practice." National Academies of Sciences, Engineering, and Medicine. 2026. Delineation of Linear Roadside Hardware Systems and Roadside Obstacles. Washington, DC: The National Academies Press. doi: 10.17226/29352.
Page 8
Suggested Citation: "2 Background and Current Practice." National Academies of Sciences, Engineering, and Medicine. 2026. Delineation of Linear Roadside Hardware Systems and Roadside Obstacles. Washington, DC: The National Academies Press. doi: 10.17226/29352.
Page 9
Suggested Citation: "2 Background and Current Practice." National Academies of Sciences, Engineering, and Medicine. 2026. Delineation of Linear Roadside Hardware Systems and Roadside Obstacles. Washington, DC: The National Academies Press. doi: 10.17226/29352.
Page 10
Suggested Citation: "2 Background and Current Practice." National Academies of Sciences, Engineering, and Medicine. 2026. Delineation of Linear Roadside Hardware Systems and Roadside Obstacles. Washington, DC: The National Academies Press. doi: 10.17226/29352.
Page 11
Next Chapter: 3 Crash Data Analysis and Findings
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