Scale and Scope of Safety Assessment Methods in the Project Development Process

Long Description

The CMF for lane width is calculated as (HSM equation 19-34, p.19-48):

• The crash modification factor for lane width on a site of type w, cross section x, crash type y, and fatal and injury severity equals the exponential of the product of the lane width minus 14 and a.
• The crash modification factor for lane width on a C-D road, one lane, multi-vehicle, and fatal and injury severity equals the exponential of the product of 13 minus 14 and -0.0458. (HSM Table 19-25, p.19-48)
• The crash modification factor for lane width on a C-D road, one lane, multi-vehicle, and fatal and injury severity equals 1.047.
• The crash modification factor for lane width on a C-D road, one lane, single-vehicle, and fatal and injury severity equals the exponential of the product of 13 minus 14 and -0.0458. (HSM Table 19-25, p.19-48)
• The crash modification factor for lane width on a C-D road, one lane, multi-vehicle, and fatal and injury severity equals 1.047.
• The crash modification factor for lane width on a C-D road, one lane, multi-vehicle, and property damage only severity equals 1.0.
• The crash modification factor for lane width on a C-D road, one lane, single-vehicle, and property damage only severity equals 1.0.

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