Fig. 5From: Fundamental diagrams of pedestrian flow characteristics: A reviewFundamental diagrams of stairs given by different planning guidelines [PM: Predtechenskii and Milinskii (1978) [32], NM: Nelson and Mowrer (2002) [33], FN: Fruin (1971) [34], WM: Weidmann (1993) [35]] (Burghardt et al. [9])Back to article page