bmfree2: The 'bmfree2' function returns a 'tux' matrix of time 't',...
In cartools: Tools for Understanding Highway Performance

The bmfree2 function returns a tux matrix of time t, speed u (fps) and location x (feet).

1	bmfree2(umn, usd, tstart, tend, xstart, step, type)

`umn`	mean speed (mph), a number
`usd`	standard deviation of `usd` (mph), a number
`tstart`	simulation start time, a number
`tend`	simulation end time, a number
`xstart`	location (feet), a number
`step`	time-step size, a number
`type`	logical for plotting where TRUE creates a plot