Fig. 2From: Optimal joint operation of coupled transportation and power distribution urban networksa IEEE 30-node radial power network as a base layout for the PDN. b coupled with charging stations CS1 and CS2 in the transportation network with the travel links and nodes. The yellow lines in TN denote possible traffic congestion. The links of the TN are shown by L1–L30 and the nodes are denoted in red from 1 to 24Back to article page