Name: Top 200 Crash Clusters (2018-2020)

Display Field: GroupCode

Type: Feature Layer

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Description: The top 200 locations where reported collisions occurred at intersections have been identified. The crash cluster analysis methodology for the top intersection clusters uses a fixed meter search distance of 25 meters (82 ft.) to merge crash clusters together. This analysis was based on crashes where a police officer specified one of the following junction types: Four way intersection, T-intersection, Y-intersection, five point or more. Furthermore, the methodology uses the Equivalent Property Damage Only (EPDO) weighting to rank the clusters. EPDO is based any type of injury crash (including fatal, incapacitating, non-incapacitating and possible) having a weighting of 21 compared to a property damage only crash (which has weighting of 1). The clusters were reviewed in descending EPDO order until 200 locations were obtained. The clustering analysis used crashes from the three year period from 2017-2019. The area encompassing the crash cluster may cover a larger area than just the intersection so it is critical to view these spatially.

Copyright Text: Massachusetts Department of Transportation Highway Division Safety Group

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Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

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Spatial Reference: 102100 (3857)

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Name: Top 200 Crash Clusters (2018-2020)
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Last Edit Date: 12/10/2024 9:07:37 PM

Schema Last Edit Date: 12/10/2024 9:07:37 PM

Data Last Edit Date: 12/10/2024 9:07:37 PM

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