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Somerville Traffic Crash Dataset
Government & Civic Records
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About
This collection of data details traffic crashes within Somerville, USA, providing specific context and circumstances related to each incident. It is a critical resource for exploring traffic safety trends and understanding the diverse factors contributing to accidents in the municipality. The dataset includes reports of crashes that occurred on a public way where an injury, a fatality, or property damage exceeding $1,000 was recorded. This information is highly valuable for research, policy-making, and implementing interventions designed to reduce accidents and improve road safety.
Columns (List and describe each column found in the 'Original Data Sample'.)
- Crash Number: A unique identifier assigned to each crash event by the police department.
- Date and Time of Crash: The precise date and time when the incident took place.
- Police Shift: Specifies the operating police shift that responded (e.g., Day Shift, First Half).
- Crash Location: The geographical site where the crash happened.
- Light Conditions: Describes the ambient lighting at the time of the crash (e.g., DAYLIGHT, DARK - LIGHTED ROADWAY).
- Weather Conditions: The prevailing atmospheric conditions during the incident (e.g., CLEAR, CLOUDY).
- Road Surface: Describes the state or type of the road surface (e.g., DRY, WET).
- Road Contributing Circumstances: Factors or circumstances related to the road condition that may have contributed to the crash.
- Traffic Control Device Type: Identifies the type of traffic regulation apparatus present, such as NO CONTROLS or TRAFFIC CONTROL SIGNAL.
- Roadway Intersection Type: Specifies the type of intersection (e.g., T-INTERSECTION, NOT AT INTERSECTION).
- Trafficway Description: A description of the trafficway involved in the crash.
- Manner of Collision: The way in which the collision occurred (e.g., rear-end, head-on).
- First Harmful Event: The initial event that caused harm in the sequence of the crash.
- First Harmful Event Location: The location where the initial harmful event took place.
- Speed Limit: The posted speed limit at the crash location.
- Work Zone: Indicates whether the crash occurred within a defined work zone.
- Count Fatal Injury: The tally of fatalities resulting from the incident.
- Count Suspected Serious Injury: The quantity of injuries suspected to be severe.
- Count Suspected Minor Injury: The number of suspected minor injuries.
- Count Possible Injury: The number of possible injuries recorded.
- Count No Apparent Injury: The count of individuals with no apparent injuries.
- Count Unknown Injury: The number of injuries where severity is unknown.
- Count Not Reported Injury: The number of injuries that were not reported.
- Total Non-Motorists: The overall number of non-motorized individuals involved.
- Pedestrian Involvement (Non-Motorist): Specifies if a pedestrian was involved in non-motorist incidents.
- Cyclist Involvement (Non-Motorist): Specifies if a cyclist was involved in non-motorist incidents.
- Other Non-Motorist Involvement: Involvement of other non-motorized parties in the crash.
- Hit and Run Flag: A flag indicating if the incident was a hit-and-run.
- Latitude: Geographic latitude coordinate of the crash location.
- Longitude: Geographic longitude coordinate of the crash location.
- Ward: The specific ward where the crash occurred.
- Block Code: A code representing the specific block of the crash location.
Distribution
The dataset is typically provided as a data file, which is usually in CSV format. The file, named "Somerville Crashes data.csv," contains 32 distinct columns and holds 2,428 validated records. The approximate file size is 715.79 kB. The expected update frequency for this data product is monthly.
Usage
This data is ideal for several practical applications:
- Analyzing and quantifying traffic safety risks and performance.
- Identifying specific trends in accident causes and locations.
- Informing evidence-based policy-making related to urban mobility.
- Implementing and assessing interventions aimed at improving road safety.
- Academic research into transportation epidemiology and crash factors.
Coverage
The data documents traffic crashes that have occurred on public ways in Somerville, USA, spanning from May 2018 up to the present day. It specifically excludes incidents that are currently under active investigation and those that occur on state roads, which are under the jurisdiction of the Massachusetts State Police.
License
CC BY-SA 4.0
Who Can Use It
The dataset serves various professionals and organizations:
- Transportation Analysts: For identifying safety bottlenecks and assessing risk factors.
- Urban Planners: For making data-driven decisions regarding infrastructure modifications.
- Public Safety Officials: For allocating patrol resources and designing intervention programmes.
- Academic Researchers: For studying transportation patterns and injury causation.
Dataset Name Suggestions
- Somerville Traffic Crash Dataset
- Municipal Incident Data
- Somerville Road Safety Trends
Attributes
Original Data Source: Somerville Traffic Crash Dataset
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