Minimum spatial separations in movement direction depending on the escalator speed (left) and the model parameter <i>T</i> (right).

The simulation results are obtained by measuring for the escalator widths w = 0.6 m and w = 1.0 m, respectively. Model parameters are fixed by T = 0.25s (left) and vesc = 0.5 ms−1 (right). The approximations follow from Eq (6) using dstep = 0.4 m, for w = 1.0 m, and for w = 0.6 m. The shaded area indicates the range of typical escalator speeds.