driver: The Dataset for Young Drivers

In QR.break: Structural Breaks in Quantile Regression

The Dataset for Young Drivers

Description

This is a repeated cross-sectional data set on young drivers (under 21 years old) involved in motor vehicle accidents in the state of California from 1983 to 2007 (quarterly data). The data are obtained from the National Highway Traffic Safety Administration (NHTSA), which include the blood alcohol concentration (BAC) of the driver, their age, gender, and whether the crash was fatal.

Usage

data(driver)

Format

A data frame with five variables:

• yq: Year and quarter ("Year Quarter" format, e.g., "1983 Q2").

• bac: The blood alcohol concentration (BAC) level of the driver.

• age: The driver's age.

• gender: A gender dummy, with 1 for male and 0 for female.

• winter: A dummy variable for the fourth quarter, with 1 for Q4 and 0 otherwise.

Details

Motor vehicle crashes are the leading cause of death among youth aged 15–20, with a high proportion involving drunk driving. The BAC level is an important measure of alcohol impairment. Oka and Qu (2011) used this data to examine whether and how young drivers' drinking behaviors have changed over time.

References

Oka, T. and Z. Qu (2011). Estimating Structural Changes in Regression Quantiles. Journal of Econometrics, 162(2), 248–267.

Examples

data(driver)
names(driver)
summary(driver)

QR.break documentation built on June 8, 2025, 1:53 p.m.