Formula
Usable window = published window − unavailable time. Utilization (%) = scheduled delivery time ÷ usable window × 100. Additional stops = floor(remaining time ÷ average added-stop time).
What the result means
Utilization shows the share of genuinely usable time already committed. A value above 100% indicates that the schedule does not fit the window under the entered assumptions.
A lower percentage is not automatically wasteful: dispatchers often preserve time for traffic variability, failed delivery attempts, or priority orders.