The Pillar provides a connection for power and hypertubes, also there is a streetlight connected to the outer power lines and a sign for destination/direction. If you connect the powerlines you should also be able to zipline on the inner lines.

This design was used for the extended version of the Multipurpose (ML) Trainline blueprints.

This is Part of the Retrofuturistic Railway Collection

(https://satisfactory-calculator.com/en/blueprints/index/details/id/6512/name/Retrofuturistic+Railway+Collection)