Download CRSS data files as zipped CSV or SAS files

This function is similar to get_fars_zip() to download files directly from NHTSA FTP site. If read is TRUE, the function reads a list containing data frames for each table available in the selected year. If geometry is TRUE, the accident table is converted to an sf object.

Usage

get_crss_zip(
  year = 2022,
  format = "csv",
  path = NULL,
  aux = FALSE,
  read = TRUE,
  geometry = FALSE,
  overwrite = FALSE
)

Arguments

year: Year of data from 2016 to 2022, Default: 2022
format: Format of zipped data tables ('csv' or 'sas'). Default: 'csv'. unzip and geo options are only supported if format is "csv".
path: Path to download zip file. Set to getwd() if NULL (default).
aux: If TRUE, download auxiliary CRSS datasets .
read: If TRUE, unzip the downloaded file and read CSV files into a list of tables with each list item corresponding to one CSV file.
geometry: If TRUE, convert the accident table to a sf object.
overwrite: If FALSE, abort if file exists at the provided path. If TRUE, overwrite file.

Value

Downloads zip file with CSV or SAS tables and returns the zip file path invisibly or returns a list of data frames (if geo is FALSE), or returns a list of data frames with the accident table converted to a sf object.