Why Saudi Arabia Is Building a Linear City

the main advantage i can see with this is that by having it be one single line with no branches, complete train transport is very viable. Not only are trains 2-3+ times more energy-efficient than road motor vehicles, it also removes the need for most private transport so all in total the train would easily be 10+ more energy efficient. The issues arise when you need to control congestion and traffic near high density areas. Because its a line, it lacks another dimension for traffic to flow. lets say that there are 2 highly popular sections. If there are any sections between them, the middle sections will not be able to move people or goods because the majority of the traffic is between the two nodes and not many would be unloaded in the sections between. (think new york and new jersey)

however if the system actually works, the espansion of the city is simple, build in the orthagonal direction.

I think this city is too focused on the effectiveness of the transport system and not enough on the traffic problems that arrise from uneven distribution however it can be combatted by good city planning