Compliance to standardized highway design criteria is considered essential to ensure
roadway safety. However, for a variety of reasons, situations arise where exceptions to …

Safety programs can provide benefits only if they apply effective countermeasures to the
locations and areas that really need safety treatment. A methodology of areawide safety …

This synthesis report summarizes the current practice and research on statistical methods in
highway safety analysis. This synthesis report will be of interest to individuals with state …

Abstract The Highway Safety Manual (HSM) procedures apply specific safety performance
functions (SPFs) and crash modification factors (CMFs) appropriate for estimating the safety …

This report has investigated the statistical relationship between crash activity and roadway
design attributes on the Oregon state highway system. Crash models were estimated from …

Many transportation agencies use accident frequencies, and statistical models of accidents
frequencies, as a basis for prioritizing highway safety improvements. However, the use of …

This paper presents an empirical inquiry into the applicability of zero-altered counting
processes to roadway section accident frequencies. The intent of such a counting process is …

The Highway Safety Manual (HSM), Part C, presents crash prediction models for three types
of facilities. Each of these models was developed with data from a few states. As noted in the …

The analysis of highway-crash data has long been used as a basis for influencing highway
and vehicle designs, as well as directing and implementing a wide variety of regulatory …

Mitigation Strategires for Design Exceptions - July 2007 (ARCHIVED) Page 1 Mitigation
Strategies for Design Exceptions US Department of Transportation Federal Highway …