calspeedflow {LPCM}

Speed-flow data from California.

Description

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.

Usage

data(calspeedflow)

Format

A data frame with 444 observations on the following 4 variables.

Date

a factor with levels 07/09/2007... 07/10/2007.

Timestamp

a factor with a timestamps in intervals of five minutes.

Lane5Flow

a numeric vector of vehicle flow in vehicles per 5 minutes.

Lane5Speed

a numeric vector of vehicle speed in miles per hour.

Source

Retrieved from PeMS.

References

Einbeck, J., and Dwyer, J. (2011). Using principal curves to analyze traffic patterns on freeways. Transportmetrica 7, 229-246.

Examples

data(calspeedflow)
plot(calspeedflow[,3:4])