Question
How do collision frequency and severity vary across New York City by time, location, and contributing factors?
Approach
Analyzed collision records from 2016–2021 and summarized temporal and borough-level patterns in a report and an interactive Tableau dashboard.
Findings
In the analyzed records, collision volume declined while the share of collisions involving injury or death increased. Friday afternoons had high collision volume, while late-night weekend periods had higher fatality counts. Brooklyn had the largest number of collisions involving at least one injury or death.
These are descriptive findings from the analyzed period, rather than causal conclusions or current traffic estimates.