njtr1 is a package that makes it easy to download New Jersey car crash data that is released by the New Jersey Department of Transportation. This package makes it easy to access detailed information on a statewide or county-by-county process that can assist those interested in studying trends in vehicle crashes in New Jersey.

Usage

The main function of this package is get_njtr1(). This function allows you to specify the specific table of NJTR-1 data that you'd like to query for a given year.

There are 5 different tables available with NJTR-1 data and published by the NJDOT. We will take a look at each of them in the following examples.

Accidents

get_njtr1(year = 2019, type = "Accidents")

Drivers

get_njtr1(year = 2019, type = "Drivers")

Vehicles

get_njtr1(year = 2019, type = "Vehicles")

Insurance company data

Each of the vehicle records contain a field name insurance_company_code that identifies the name of the insurance company that covers the vehicle involved in an accident.

This code can be used to join the vehicle data with a dataset containing details for every insurance company that does business in New Jersey.

Access the insurance from the package like so:

data("insurance")
head(insurance)
## # A tibble: 6 x 9
##   ID_NO NAME         ADDRESS_1    ADDRESS_2 ADDRESS_3 CITY   STATE ZIP   NOTES  
##   <chr> <chr>        <chr>        <chr>     <chr>     <chr>  <chr> <chr> <chr>  
## 1 001   SAMSUNG FIR… 25 CHALLENG… <NA>      <NA>      RIDGE… NJ    07660 COMM O…
## 2 002   BROTHERHOOD… PO BOX 2227  <NA>      <NA>      FORT … IN    07661 COMM O…
## 3 003   MID-CENTURY… 4680 WILSHI… <NA>      <NA>      LOS A… CA    07662 PRIV P…
## 4 004   ACE PROPERT… 1601 CHESTN… PO BOX 4… <NA>      PHILA… PA    07663 COMM O…
## 5 005   FIRST NONPR… 111 NORTH C… SUITE 801 <NA>      CHICA… IL    07664 COMM O…
## 6 006   EVEREST PRE… 477 MARTINS… <NA>      <NA>      LIBER… NJ    07665 COMM O…

The insurance dataset contains a field ID_NO which is the same as insurance_company_code in the Vehicles table. This common field can be used for performing join operations.

Pedestrians

get_njtr1(year = 2019, type = "Pedestrians")

Occupants

get_njtr1(year = 2019, type = "Occupants")