Skip to main content

Identification of Vehicular Impact Conditions Associated with Serious Ran-off-Road Crashes (2010) / Chapter Skim
Currently Skimming:

6.3 Long-Term Data Collection
Pages 65-66

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...
... The distributions of longitudinal departure lengths included in the data set correlated surprisingly well with recommended guardrail runout lengths generated from Cooper's encroachment data. The only significant difference between the longitudinal departure length distributions and the modified runout length guidelines was associated with the use of a 60 mph design speed for a full access-controlled freeway.
Read the entire page →
From page 66...
... Further, such a study would provide greater information regarding the causation of injuries and fatalities during crashes involving roadside safety hardware. This information will provide the foundation for the next generation roadside safety features designed to dramatically reduce injuries and fatalities associated with ranoff-road crashes.
Read the entire page →

Key Terms

  • limit classes
  • runout length
  • relational database
  • square root
  • mph design

  • nass cds
  • highway functional
  • departure velocity
  • functional class
  • impact conditions

  • length guidelines
  • strongly biased
  • length table
  • accurately modeled
  • generation roadside

  • detailed work
  • guardrail runout
  • includes detailed
  • longitudinal departure
  • closely associated

  • length distributions
  • correlated surprisingly
  • sampling subsystem
  • study subsystem
  • develop distributions

  • detailed characteristics
  • roadside impact
  • common distribution
  • plan involves
  • runout lengths


    • 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.