Measure each container's cycle from dispatch until ready for reuse instead of applying a fixed ratio. Separate customer dwell, return, washing, drying and repair stages.
Compare dispatch demand by day and route; log outcomes such as stock shortages, delayed trips and urgent washing. Do not count unavailable units as ready stock.
Adjust reserve through a limited trial. Track dispatch gaps, parking space and maintenance cost together, and reassess the quantity as records change.


