fd_rlm: Fit Robust Triangular Fundamental Diagram

In clarkfitzg/traffic: Tools for analyzing vehicle traffic data

Description

The fundamental diagram (FD) in traffic engineering represents flow as a function of density.

Usage

fd_rlm(flow, occupancy, cutoff = 0.15, ...)

Arguments

flow	Count of passed vehicles
occupancy	Traffic density between 0 and 1
cutoff	Point separating high and low occupancy
...	Additional arguments for coderlm

Details

This only fits 2 robust linear models and returns the coefficients. It is not a true triangular fundamental diagram because the fitted models include intercepts, and does not enforce the constraint that low and high density should meet at the cutoff point.

Value

fd list containing fitted FD

clarkfitzg/traffic documentation built on May 13, 2019, 7:35 p.m.