NJ Traffic Crash Data

The NJ State Police publish fatal crash data going back to 2008. It's usually current to the previous day, though things also show up weeks or months after the fact. The first 5 plots below are from that data.

Below that is some analysis of NJ DOT raw crash data, which includes property-damage, injury, and fatal crashes from 2001-2020 (≈6MM records). It's a richer dataset, but less up to date (it currently ends in 2020, just before things regressed dramatically in 2021). 2021 data should arrive in early 2023.

Tap plots to see specific values, single- or double-tap legend entries to toggle or "solo" them.

Code and cleaned data are on GitHub here.

NJ Traffic Deaths per Year

NJ Traffic Deaths per Year

2021 and 2022 were the worst years in the NJSP record (since 2008), with 697 and 700 deaths, resp.

Victim types have been published since 2020; prior years are shown as "Unknown". Additionally, NJSP reports a traffic death total that is ≈5% higher than their crash records account for; that discrepancy is labeled "Missing" above.


NJ Traffic Deaths per Year

NJ Traffic Deaths per Year

These are based on actual crash records in the NJSP data (which are ≈5% lower than the totals used in the first plot).

Some data arrives weeks or months after the fact, so current year numbers are especially subject to change.


NJ Traffic Deaths vs. Homicides

NJ Traffic Deaths vs. Homicides

Traffic crashes kill 1.5-2x as many people as homicides in NJ.

Homicide data comes from NJ State Police and Disaster Center.


NJ DOT Raw Crash Data

NJ DOT publishes raw crash data, including property-damage, injury, and fatal crashes, going back to 2001 (≈6MM records).

The data currently ends in 2020, after a drop in all types of crashes due to COVID, and just before a spike in all crash types in 2021 and 2022 (based on the NJSP data above, and other sources). 2021 data should land in early 2023.

Check out the code and data on GitHub (or leave some feedback).