Originally shared on the public FactorioPrints / Factorio School archive (factorioprints.com · factorio.school). Authorship preserved from the public catalog.
A basic left-hand drive tileable grid, to fit a [Wagon Wagon Locomotive Wagon Wagon] setup, with a built-in balancer in the centre, basic circuits to adjust the priority of the station based on the inventory of the buffer chests and lastly 2 wall segments that clip with each other and themselves to give full coverage on any angle + the refueling station.