Mobility Monitoring – Roadways – Crashes OVERVIEW •
REGIONAL TRENDS •
ROADWAYS •
INTERSECTIONS •
TRANSIT BICYCLE/PEDESTRIAN •
HOV LANES •
TRAVEL DEMAND MANAGEMENT •
PARK-AND-RIDEOverview •
Arterial Roadways •
Crashes •
Freeways •
Performance Measures •
Traffic Volumes
Roadway crash data are compiled by the Registry of Motor Vehicles (RMV). The Central Transportation
Planning Staff (CTPS) then uses a geographic information system (GIS) to geocode the RMV data and subsequently identify the top crash
locations, which are summarized in MassHighway´s statewide “Top 1000 High Crash Locations Report” (August 2002).
MassHighway uses the report and the crash data to develop a list of possible safety improvement projects. A
three-year crash history is used—a standard industry practice for analyzing crash locations.
The tables and maps available for download below show crash data for the years 1997-1999—this was the most recent
data available for analysis in the 2004 report on mobility monitoring.
Ranking Crash Locations
MassHighway uses a weighted scoring system to rank the crash locations. The following weights are assigned to crash
incidents according to crash severity:
Property damage only = 1
Personal injury = 5
Fatality = 10
The weighted score highlights the locations that tend to have more serious crashes, rather than simply ranking by
the number of crashes.