  We investigate via extensive experimental data the dynamics of pedestrians
walking in a corridor-shaped landing in a building at Eindhoven University of
Technology. With year-long automatic measurements employing a Microsoft
KinectTM 3D-range sensor and ad hoc tracking techniques, we acquired few
hundreds of thousands pedestrian trajectories in real-life conditions. Here we
discuss the asymmetric features of the dynamics in the two walking directions
with respect to the flights of stairs (i.e. ascending or descending). We
provide a detailed analysis of position and speed fields for the cases of
pedestrians walking alone undisturbed and for couple of pedestrians in
counter-flow. Then, we show average walking velocities exploring all the
observed combinations in terms of numbers of pedestrians and walking
directions.
