nopass produces t, u and x for lead and following vehicles downstream of a bottlenecknopass produces t, u and x for lead and following vehicles downstream of a bottleneck
nopass(veh, nope, leff)vehicle, a number
is a data.frame of leading and following vehicles: time, speed and location data, a data frame
effective vehicle length in feet, a number
brktrials returns a data frame speed and location downstream of bottleneck.