Rural Two Lane Gravel Roads

Safety performance functions, development (calibration, crash modification factors [Part C], crash proportions), IHSDM and other software

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Rural Two Lane Gravel Roads

Postby gamparano » Wed Mar 28, 2012 3:53 am

Is the crash predtiction methodology (SPFs and CMFs) for Rural Two-Lane Roads applicable to both paved and non-paved (gravel) roadway segments?
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Re: Rural Two Lane Gravel Roads

Postby mdimaiuta » Wed Mar 28, 2012 12:08 pm

Data used to develop the rural 2-lane highway predictive method were collected only from paved roads. Based on this, I would conclude that the methods do not apply to gravel roads.

Mike Dimaiuta
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ihsdm.support@dot.gov
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