Effective supply is the usable share of a facility’s stalls after deducting a cushion for circulation, turnover friction, misparked vehicles, and reserved stalls, typically 85-95% of the striped count. In a parking facility:
- A 1,000-stall garage functions as roughly 900-950 stalls; demand analysis against the striped count overstates capacity.
Considerations
- The cushion varies by user mix and turnover; high-turnover retail needs more. Design to effective supply, not the paint.