Balanced panel data for the years 1983–1997 from 50 US States, plus the District of Columbia, for assessing traffic fatalities and seat belt usage.
A data frame containing 765 observations on 12 variables.
factor indicating US state (abbreviation).
factor indicating year.
millions of traffic miles per year.
number of fatalities per million of traffic miles
(absolute frequencies of fatalities =
seat belt usage rate, as self-reported by state population surveyed.
factor. Is there a 65 mile per hour speed limit?
factor. Is there a 70 (or higher) mile per hour speed limit?
factor. Is there a minimum drinking age of 21 years?
factor. Is there a maximum of 0.08 blood alcohol content?
median per capita income (in current US dollar).
factor indicating seat belt law enforcement
Some data series from Cohen and Einav (2003) have not been included in the data frame.
Online complements to Stock and Watson (2007).
Cohen, A., and Einav, L. (2003). The Effects of Mandatory Seat Belt Laws on Driving Behavior and Traffic Fatalities. The Review of Economics and Statistics, 85, 828–843
Stock, J.H. and Watson, M.W. (2007). Introduction to Econometrics, 2nd ed. Boston: Addison Wesley.
data("USSeatBelts") summary(USSeatBelts) library("lattice") xyplot(fatalities ~ as.numeric(as.character(year)) | state, data = USSeatBelts, type = "l")