A delay allowance should not be set from a fixed number of hours or one worst-case trip. Review actual route variation, product requirements and validated transport setup together.
For each trip, record planned and actual departure and arrival, stops, dock waits, traffic or address issues, load and container ID. Do not fill missing records with estimates.
Compare multiple records from the same route and service type. Review delay causes and variation alongside averages; keep seasons, weekdays or customer waits separate when they differ.
Compare observed delay ranges with product instructions and container or route trial data. If conditions approach a product limit, do not assume extra time; review route, delivery window or equipment.
Include delay notification, required measurement, segregation location and authorised decision owner in the procedure. Do not leave thresholds or product disposition to the driver; use the relevant quality and product documents.
