The first edition of the Highway Safety Manual (HSM) was developed through a series of NCHRP projects and was published by AASHTO in 2010. Predictive methods for freeways and ramps were completed in ...
Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...
We need data to make decisions about the effectiveness and efficiency of safety and other infrastructure improvement programs based on data. But we are consistently confronted by questions about data.
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