The design requirements were for three lanes of vehicular traffic and a singlerail line in each direction.
这个设计要求在每个方向有三条交通车道和一条单线铁路线。
2
You will notice that in the schematic the negative rail has 0 voltage so that setup is essentially in singlerail.
你会发现在电路图中负电压是0伏，所以结构本质上是单电压。
3
However, all that rail (and distance) between city centers makes it seem like this is less a single mega-city and more like highly controlled urban sprawl.