These are two data sets collected in 1993 on two individual lanes
(lane 2 and lane 3) of the 4-lane Californian freeway I-880. The data were
collected by loop detectors, and the time units are 30 seconds per
observation (see Petty et al., 1996, for details).
Usage
data(lane2)
data(lane3)
Arguments
source
Petty, K.F., Noeimi, H., Sanwal, K., Rydzewski, D., Skabardonis, A.,
Varaiya, P., and Al-Deek, H. (1996). ``The Freeway Service Patrol Evaluation Project:
Database Support Programs, and Accessibility''. Transportation Research Part C: Emerging
Technologies, 4, 71-85.
The data is provided by courtesy of CALIFORNIA PATH, Institute of Transportation Studies,
University of California, Berkeley.
Details
The data is examined in Einbeck and Tutz (2006), using a nonparametric approach
to multi-valued regression based on conditional mean shift.
References
Einbeck, J., and Tutz, G. (2006). ``Modelling beyond regression functions:
an application of multimodal regression to speed-flow data''. Journal of the Royal Statistical Society, Series C (Applied Statistics),
55, 461-475.