Figure 4: Results for non-homogeneous scenario. A. Passenger delays for methods: “default” ( DF ), “max” ( MX ), and “self-organizing” ( SO ), for different passenger inflow intervals λ . Lower boxes, slightly shifted to the right, at each column show waiting times at stations. Higher boxes show total waiting times. B. Headway standard deviations. Lower σ$_{f}$ implies more regular headways. Notice logarithmic scale [57]. 24  (mean passenger inflow interval) D p  (mean passenger delay) 10 20 50 100 200 4 8 12 16 DF SO MX DF SO MX A  (mean passenger inflow interval) f  (mean standard deviation of intervehicle frequencies) 0.2 0.5 2.0 5.0 20.0 100.0 4 8 12 16 DF SO MX DF SO MX DF MX SO B