Dual track isn’t really a two way road, with signaling it ends up being infinite sidings, and is used almost more for passing than for two-way traffic - if it exists outside cities.
Unfortunately much of the USA is single or effectively single tracked.
Because trains never go the other direction anyway.
Dual track isn’t really a two way road, with signaling it ends up being infinite sidings, and is used almost more for passing than for two-way traffic - if it exists outside cities.
Unfortunately much of the USA is single or effectively single tracked.