Why do car park floors wear out?
Because most are painted, not coated with a floor system. Tyres turning on the spot, oil and water from wet cars lift a thin paint from unprepared concrete, and smooth ramps turn slippery in the rain. The broadcast system is built thicker and textured, on a ground and primed slab.
The survey looks at where the wear is worst: the turns at the foot of the ramps, the entrance, and the bays nearest the lifts.