Figure 2From: Understanding coupling dynamics of public transportation networksTemporal features of coupling strength \(\lambda_{i}^{\mathrm{norm}} (t )\) and speed ratio \(\beta_{i}^{\mathrm{norm}} ( t )\). SDNs with destinations at a commercial zone (SDN 1) (panel (a), (d)), a transportation hub zone (SDN 2) (panel (b), (e)) and a residential zone (SDN 3) (panel (c), (f))Back to article page