Speed-flow data from Calfornia.
A ‘fundamental diagram’ with observations of speed and flow recorded from 9th of July 2007, 9am, to 10th of July 2007, 10pm, on Line 5 of the Californian Freeway SR57-N, VDS number 1202263. The data were originally measured in intervals of thirty seconds, and then aggregated over intervals of 5 minutes length.
A data frame with 444 observations on the following 4 variables.
a factor with levels
a factor with a timestamps in intervals of five minutes.
a numeric vector of vehicle flow in vehicles per 5 minutes.
a numeric vector of vehicle speed in miles per hour.
Retrieved from PeMS.
Einbeck, J., and Dwyer, J. (2011). Using principal curves to analyze traffic patterns on freeways. Transportmetrica 7, 229-246.