Estimate how many deliveries can be scheduled inside a defined appointment window. The calculator evaluates two independent constraints: how many service cycles the available vehicles can perform and how many appointments the receiving docks can process. The lower result is the usable window capacity, with a planning buffer applied so the schedule does not assume every minute can be booked.
The result is a whole-delivery scheduling estimate after reserving the selected buffer. Vehicle and dock results show which resource is binding.
Travel per cycle should match the operational pattern—round trip for a dedicated vehicle cycle, or incremental route time when vehicles serve multiple appointments.
A 4-hour window with a 15% buffer has 204 usable minutes. Ten vehicles with 70-minute cycles provide 29 delivery slots. Four docks at 25 minutes each provide 32 slots. Usable capacity is therefore 29 deliveries.
Only complete service cycles can be promised inside the window, so partial remaining time is not counted.
Include whatever travel is required before the same vehicle can begin another delivery cycle in this window.
It reserves part of the window for ordinary variability, handoffs, minor delays, and schedule recovery.
Yes. In that case vehicles or their cycle time limit scheduled deliveries even though receiving service has room.
Calculate each distinct resource period carefully; do not add capacities if the same vehicles or docks are committed to overlapping windows.
| Variable | Meaning | Unit |
|---|---|---|
| W | Window length | minutes |
| b | Unbooked buffer | percent |
| T + S | Travel and service cycle | minutes |
| V | Available vehicles | vehicles |
| D | Simultaneous service docks | docks |