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The crash-based network screening data is based on excess average crash frequency with an Empirical Bayes (EB) adjustment for five facility types on collectors and arterials: rural two-lane undivided segments, urban four-lane divided segments, urban four-lane undivided segments, urban two-lane undivided segments and urban two-lane divided segments for all crashes. Segments are ranked from most to least excess crash frequency, calculated as the difference between expected and predicted average crash frequency, on both the Statewide and MPO/RPA level. This data identifies sites in the Top 5% and then the next 10% of all segments by Statewide. |
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The crash-based network screening data is based on excess average crash frequency with an Empirical Bayes (EB) adjustment for five facility types on collectors and arterials: rural two-lane undivided segments, urban four-lane divided segments, urban four-lane undivided segments, urban two-lane undivided segments and urban two-lane divided segments for all crashes. Segments are ranked from most to least excess crash frequency, calculated as the difference between expected and predicted average crash frequency, on both the Statewide and MPO/RPA level. This data identifies sites in the Top 5% and then the next 10% of all segments by Statewide. |
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VHB, MassDOT Highway Traffic Safety |
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5000 |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Network Screening – Crash Based data can be used to access and visualize Massachusetts top crash locations based on segments exceeding the predicted number of crashes. The information is based on the latest 5 years of closed geocoded crashes (2013-2017).Safety Performance Functions (SPFs), based on the specific roadway network and crash data, have been developed to determine the ranking of the segments. For additional information and descriptions visit MassDOT SPF Development and Ranking Methodology. The data in this module only contains segment crash results. For the methodology in determining top crash intersection locations and to view the map please refer to MassDOT's Top crash locations and maps.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This data is in the public domain and therefore can be used by anyone for any purpose. MassDOT shall not be held liable for any errors in this data. This includes errors of omission, commission, errors concerning the content of the data, and relative and positional accuracy of the data. This data cannot be construed to be a legal document. Primary sources from which this data was compiled must be consulted for verification of information contained in this data.</SPAN></P></DIV></DIV></DIV> |
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| title:
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Excess Expected All Crashes by Statewide Ranking |
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| tags:
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["transportation","IMPACT","ANALYSIS","CRASHBASE"] |
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en-US |
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150000000 |
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