The stalls in the shop are 1,2,3,4. The stalls in the car barn should be 5,6,7 (any direction). The stalls in the roundhouse should be 8, 9, 10 (any direction). If the speeder stall is added to the carbarn it should be adjusted accordingly. With this system, stalls would not need clarification. When someone says go to stall 6, one immediately knows it is the center stall of the carbarn without any explanation needed.
Bernie