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Highway Safety Improvement Program (HSIP)

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Traffic Engineering


Congress established the Highway Safety Improvement Program under SAFETEA-LU (2005-2012 Federal legislation for surface transportation spending) and continued it under MAP-21 (signed into law in 2012) to achieve a significant reduction in traffic fatalities and serious injuries on all public roads, including non-State-owned public roads and roads on tribal lands. The HSIP requires a data-driven, strategic approach to improving highway safety on all public roads that focuses on performance.

HSIP Task Force

A Massachusetts HSIP Task Force was established to develop guidelines for HSIP-eligible projects and programs. The Task Force consists of FHWA, MassDOT Highway, MassDOT Planning and MARPA (Massachusetts Association of Regional Planning Agencies).

HSIP Eligible Clusters

An HSIP eligible cluster is one in which the total number of "equivalent property damage only" crashes in the cluster is within the top 5% of all clusters in that region. "Equivalent property damage only" is a method of combining the number of crashes with the severity of crashes based on a weighted scale where a fatal crash is worth 10, an injury crash is worth 5 and a property damage only crash is worth 1.

HSIP Eligible Projects

A highway safety improvement project is any strategy, activity or project on a public road that is consistent with the data-driven State Strategic Highway Safety Plan (SHSP) and corrects or improves a hazardous road location or feature or addresses a highway safety problem. To obligate HSIP funds, a State must develop, implement and update a SHSP, produce a program of projects or strategies to reduce identified safety problems, and evaluate the SHSP on a regular basis. Workforce development, training, and education activities are also an eligible use of HSIP funds.


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