Traffic light data for different light sequences, intersections, and times of
day.
Usage
data(traffic)
Arguments
Format
A data frame with 25 rows and four columns.
minutes
the amount of unused red-light time in minutes
treatment
the traffic light sequence
intersection
the intersection the treatment was applied
time_of_day
the time of the day the treatment was applied
Details
A traffic engineer conducted a study to compare the total unused red-light
time for five different traffic light signal sequences. The experiment was
conducted with a Latin square design in which blocking factors were (1) five
intersections and (2) five time of day periods.
References
Kuehl, R. (2000). Design of Experiments: Statistical Principles of Research Design and Analysis. Belmont, California: Duxbury Press.
Best, D. J. and Rayner, J. C. W. (2011). Nonparametric tests for Latin squares. NIASRA Statistics Working Paper Series, 11-11.