Massachusetts injury research, from the original sources

Every page in this section is built from public records: state and city datasets, agency reports, statutes and published court decisions. Each one names its sources and states the exact period the data covers.

Reporters, researchers, students and anyone trying to understand injury in Massachusetts are welcome to use and cite this work.

Published: November 9, 2026

What the State Trauma Registry is, which Massachusetts hospitals are trauma centers and at what level, how they are designated, and what the registry’s 2021 to 2023 figures show.

ReferenceSources: Mass. Department of Public Health · American College of Surgeons

Published: November 9, 2026

What happens after a dog bite is reported in Massachusetts: the reporting duty, the ten-day rabies quarantine, the dangerous-dog hearing and appeal, and the state’s counts of reported bites.

ReferenceSources: Mass. General Laws c. 140 · 330 CMR 10.00 · Mass. Dept. of Agricultural Resources

Published: November 3, 2026

How Massachusetts courts decide whether negligence caused an injury and what the injury is worth in law, from twenty court opinions and the statutes that change the general rules.

ReferenceSources: Mass. SJC and Appeals Court opinions · Mass. General Laws

Published: November 3, 2026

Federal counts of deaths in Massachusetts large-truck crashes since 2012, and every truck and bus crash in state crash records since 2021, with 2024 to 2026 shown as preliminary.

Data studySources: FMCSA · NHTSA FARS · MassDOT · 2012–2026

Published: October 26, 2026

Plain-language definitions of 147 terms in Massachusetts injury law, from comparative negligence to the medical malpractice tribunal, each linked to its statute, rule or decision.

ReferenceSources: Massachusetts General Laws; court rules; Supreme Judicial Court decisions · law as of October 2026

Published: October 26, 2026

Five years of state health department counts of injury-related hospital stays among Massachusetts residents: how many there were, what caused them, and how accidents, self-harm and assault compare.

Data studySources: Mass. Department of Public Health · FFY 2019–FFY 2023

Published: October 19, 2026

The Department of Public Utilities’ first full year of monthly reports on MBTA subway safety, with its annual report, the 2022 federal inspection behind it, and the MBTA’s injury figures.

Data studySources: Mass. DPU; FTA; Boston Region MPO · 2021–2026

Published: October 19, 2026

Boston 311 pothole and sidewalk repair reports from 2012 to 2025: how many came in, who filed them, how quickly the city closed them, and what state law says about injuries from defects in public ways.

Data studySources: City of Boston 311; Mass. General Laws · 2012–2025

Published: October 12, 2026

The deadlines Massachusetts courts set for civil cases, including injury lawsuits, and the Trial Court’s own figures on how often cases finish on time, how many are overdue and how filings have changed.

Data studySources: Massachusetts Trial Court · FY 2017–FY 2026

Published: October 12, 2026

Ten years of official figures on the people killed and hurt at work in Massachusetts, by industry, cause and county, and where workers’ compensation ends and other claims begin.

Data studySources: U.S. Bureau of Labor Statistics; Massachusetts Department of Public Health · 2015–2024

Published: October 6, 2026

The reasonable-care standard for snow and ice since 2010, the appeals decisions that followed, the sidewalk-clearing rules in 32 Massachusetts cities and towns, and how often Boston tickets uncleared sidewalks.

ReferenceSources: Supreme Judicial Court and Appeals Court decisions; 32 municipal codes; City of Boston Public Works citations · Sources read October 2026

Published: October 6, 2026

Statewide deaths, crashes, serious injuries and hospital stays from the official record since 2015, the three official counts of traffic deaths side by side, and how Massachusetts has fared against its federal safety targets, followed by preliminary MassDOT figures for 2025 and 2026 so far.

Data studySources: NHTSA FARS; MassDOT IMPACT; FHWA; Boston Region MPO; DPH · Official data 2015–2024; preliminary 2025–2026

Published: October 6, 2026

The people MassDOT’s crash data records as killed while walking in Massachusetts, by age, light, road, speed limit and community: official figures for 2021–2023 and preliminary figures for 2024 through 2026, checked against WalkMassachusetts’ annual reports.

Data studySources: MassDOT IMPACT; MassGIS Environmental Justice map; WalkMassachusetts · Official data 2021–2023; preliminary 2024–2026

Published: September 25, 2026

The commission’s 16 recommendations, the Ride Safe Act that followed them, and the micromobility rules currently in force, compared side by side, with what each means for riders, pedestrians and parents.

ReferenceSources: S.3077 bill text; Special Commission on Micromobility final report · Reviewed September 2026

Published: September 25, 2026

A decade of Boston crash records, with the latest 2026 figures: the intersections and streets where crashes cluster, the hours they peak, neighborhood totals, fatal pedestrian crashes, and contributing factors recorded by police.

Data studySources: City of Boston Vision Zero crash records; MassDOT IMPACT · Data window 2015–2026

Published: September 25, 2026

Filing deadlines by type of claim in one table, with the separate notices and presentments some claims need first, including claims against a city, a town, the Commonwealth or the MBTA. Every entry cited to the statute it comes from.

ReferenceSources: Massachusetts General Laws · Statutes reviewed September 2026

Citing this work

Cite the individual page, not this index. Each page carries its own publication date and data window near the top. Charts and tables may be reproduced with attribution to Larson Law Boston and a link to the page they appear on. Where a page includes a data file, the file is linked in its sources list.

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If you were hurt and have questions

These pages explain what the public record shows. They are not advice about a specific situation, and what applies to a particular case depends on its facts. If something here raises a question about your own circumstances, you are welcome to get in touch.