 (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 Figure 3: Results for homogeneous scenario. A. Passenger delays for methods: “default” ( DF ), “max” ( MX ), and “self-organizing” ( SO ), for different passenger demands (lower λ means higher demand). Lower boxes 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. DF shows unstable headways, MX equal headways (except for λ = 4), and SO adaptive headways. Notice logarithmic scale [57]. 23