Practices for Preventing Roadway Departures (2018) / Chapter Skim
Currently Skimming:
Pages 6-11
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 6... ...
6 Engineering countermeasures for roadway departure crashes have been deployed by state agencies for several decades, and new countermeasures continue to be developed by industry and state agencies. In order to establish the state of the practice among the states for use of engineering countermeasures, it was first necessary to identify those countermeasures.
|
From page 7... ...
Engineering Countermeasures for Roadway Departure Crashes 7 Volume 3 of the NCHRP Report 500 series discusses strategies for addressing collisions with trees in hazardous locations (5)
|
From page 8... ...
8 Practices for Preventing Roadway Departures Volume 4 of the NCHRP Report 500 series discusses strategies and countermeasures for addressing head-on collisions. A head-on crash typically occurs when a vehicle crosses a centerline or a median and crashes into a vehicle traveling in the opposite direction.
|
From page 9... ...
Engineering Countermeasures for Roadway Departure Crashes 9 Keep Vehicles on the Roadway For this first category/objective, the following broad-level countermeasures are suggested by the FHWA: • Adequate pavement friction, • Rumble strips and rumble stripes, • Horizontal curve safety, and • Nighttime visibility. Poor pavement conditions, especially wet pavement, have been identified as one of the major contributing factors in roadway departure crashes.
|
From page 10... ...
10 Practices for Preventing Roadway Departures • Skid-resistant pavement countermeasures: – High-friction surface treatments, – Pavement grooving, and – Superelevation. • Shoulder countermeasures: – Shoulder widening, – Shoulder paving, – SafetyEdge, and – Rumble strips and rumble stripes.
|
From page 11... ...
Engineering Countermeasures for Roadway Departure Crashes 11 they are much less likely to cause an injury if hit. If they cannot be, then they are shielded by safety barriers (e.g., guardrails, concrete barriers)
|
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.