MassDOT uses both crash-based and risk-based network screening to help identify locations that can be improved to best help reduce the numbers of fatal and serious injury crashes.
The IMPACT Safety Analysis Module is a tool to visualize the network screening results, including the ability to find and filter the top crash or risk based segments.
Crash based network screening provides a level of focus on individual locations with large numbers of severe crashes. For further information see:
- Top Crash Locations and maps
- The Development of Safety Performance Functions for Rural and Urban Arterials and Collectors for Network Screening
This information can also be visualized on a series of maps in the IMPACT Safety Analysis Module.
Systemic approaches to network screening involve widely implementing improvements to locations where high-risk roadway features correlate with specific severe crash types. These have been developed for several of the emphasis areas within the Strategic Highway Safety Plan.
The reports provide information on the development of the risk factors and the network screening can be found for each of the emphasis areas listed under Reports below.