R Dataset / Package car / Highway1

On this R-data statistics page, you will find information about the Highway1 data set which pertains to Highway Accidents. The Highway1 data set is found in the car R package. You can load the Highway1 data set in R by issuing the following command at the console data("Highway1"). This will load the data into a variable called Highway1. If R says the Highway1 data set is not found, you can try installing the package by issuing this command install.packages("car") and then attempt to reload the data with the library() command. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the Highway1 R data set. The size of this file is about 2,306 bytes.

Highway Accidents


The data comes from a unpublished master's paper by Carl Hoffstedt. They relate the automobile accident rate, in accidents per million vehicle miles to several potential terms. The data include 39 sections of large highways in the state of Minnesota in 1973. The goal of this analysis was to understand the impact of design variables, Acpts, Slim, Sig, and Shld that are under the control of the highway department, on accidents.




This data frame contains the following columns:


1973 accident rate per million vehicle miles


length of the Highway1 segment in miles


average daily traffic count in thousands


truck volume as a percent of the total volume


(number of signalized interchanges per mile times len + 1)/len, the number of signals per mile of roadway, adjusted to have no zero values.


speed limit in 1973


width in feet of outer shoulder on the roadway


total number of lanes of traffic


number of access points per mile


number of freeway-type interchanges per mile


lane width, in feet


An indicator of the type of roadway or the source of funding for the road, either MC, FAI, PA, or MA


Carl Hoffstedt. This differs from the dataset Highway in the alr4 package only by addition of transformation of some of the columns.


Fox, J. and Weisberg, S. (2011) An R Companion to Applied Regression, Second Edition, Sage.

Weisberg, S. (2014) Applied Linear Regression, Fourth Edition, Wiley, Section 7.2.

Dataset imported from https://www.r-project.org.

Attachments: csv, json

<iframe src="https://pmagunia.com/iframe/r-dataset-package-car-highway1.html" width="100%" height="100%" style="border:0px"></iframe>