Due to No Fly clause in the Tomb World treaty, the many stairs on this planet must either be climbed on foot or by ground effect vehicles.
A special vehicle was created by Union Engineers called the Stair Crawler.
It was adopted by the Colonists of Tomb World as the main vehicle. A small company on Quadro Planet manufactures these Stair Busses.
There are several models available, but they look more or less the same.