Selection and Placement Guidelines for Test Level 2 Through Test Level 5 Median Barriers (2022) / Chapter Skim
Currently Skimming:
Pages 65-72
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 65... ...
A-1 A P P E N D I X A Survey of States This research includes the conduct of two surveys. A survey of the AASHTO Highway Subcommittee on Design (SCOD)
|
From page 66... ...
A-2 Selection and Placement Guidelines for Test Level 2 Through Test Level 5 Median Barriers CHAPTER 1 INTRODUCTION This research included the conduct of two surveys. A survey of the AASHTO Highway Subcommittee on Design (SCOD)
|
From page 67... ...
Survey of States A-3 CHAPTER 2 SCOD SURVEY The purpose of this survey was to gather information on the current practices, policies, and procedures used throughout the United States for median design and median barrier use. This survey served as an update to a previous survey conducted in 2006 as documented by Graham et al.
|
From page 68... ...
A-4 Selection and Placement Guidelines for Test Level 2 Through Test Level 5 Median Barriers Question 2: Typical Median Cross Section The survey participants were asked to indicate their agency's typical cross section for medians on divided highways. Thirteen respondents provided feedback on this question while 13 respondents skipped it.
|
From page 69... ...
Survey of States A-5 Question 4a and b: Median Barrier Need The survey participants were asked which criteria are considered and the corresponding quantitative values to assess the need for median barriers for divided highways. Ten respondents answered this question while sixteen respondents skipped it.
|
From page 70... ...
A-6 Selection and Placement Guidelines for Test Level 2 Through Test Level 5 Median Barriers The states responding with use of strong-post w-beam median barrier indicated the inventory was either 20% or 70% to 80%. A few states reported using blocked-out thrie-beam median barriers in medians 6 to 30 feet wide with a slope of 6:1.
|
From page 71... ...
Survey of States A-7 CHAPTER 3 SUMMARY The purpose of this survey was twofold: (1) to track changes in policy over time and (2)
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.