又找到一段话,对LZ可能有用:
The RHW-3 is an Override network, built on the same principles as the RHW-6, but allowing two-way traffic, much like a 2+1 Road in Europe, or climbing lanes on mountainous highways. It is the RHW equivalent of the ARD-3 from the NWM project
这可能是那个三线公路的插件,可能在下一版NAM或RHW中推出,到时候看看吧