toolbox
Home / Shipping & Supply Chain / Fleet Routing Capacity Estimator

Fleet Routing Capacity Estimator

The Fleet Routing Capacity Estimator estimates how many shipments a fleet can complete within a planning period using fleet size, productive hours, average route cycle time, and an optional operating-efficiency factor. It provides a simple throughput view for dispatch planning without requiring a full vehicle-routing optimization model.

Dispatchers and logistics planners can use it for rough scenario comparisons such as adding vehicles, extending productive hours, or reducing average cycle time. The result assumes that route cycles are reasonably represented by one average duration and that the efficiency factor captures expected nonproductive time. Real routing constraints such as geography, time windows, vehicle compatibility, and driver rules can reduce achievable capacity.

Inputs

vehicles
hours
hours
%
Result
—
Estimated shipment capacity
Fleet productive hours—
Effective operating hours—
Average cycle time—
Capacity (whole cycles)—

1. Set fleet size
Enter the number of vehicles available for the planning period.

2. Enter productive time
Provide productive hours per vehicle, excluding time you do not want treated as available capacity.

3. Estimate route cycle time
Use an average end-to-end cycle duration that matches the shipments represented by the plan.

4. Apply an efficiency factor
Use the efficiency input to reflect expected nonproductive time at an aggregate level.

5. Compare capacity scenarios
Change one assumption at a time to see how fleet size, hours, or cycle time affects potential throughput.

Estimated shipment capacity = Vehicles × Productive hours per vehicle × (Efficiency % ÷ 100) ÷ Average route cycle time

Where:

  • Available vehicles — entered in vehicles.
  • Productive hours per vehicle — entered in hours.
  • Average route cycle time — entered in hours.
  • Operating efficiency — entered in %.

Assumptions: all inputs refer to the same planning period or operating scenario, and the model uses the averages entered rather than forecasting external disruption.

What the result means

The result is an estimated number of route cycles or shipments that can be completed in the planning period under the entered assumptions.

This is a throughput estimate, not a route optimizer. Capacity may be lower when stops, time windows, driver constraints, traffic, or vehicle-specific restrictions are binding.

Given:
14 vehicles; 9 productive hours each; 3-hour average route cycle; 82% efficiency.

Calculation:
14 × 9 × 0.82 ÷ 3 = 34.44.

Result:
34.44 shipments of theoretical period capacity.

Interpretation:
The fleet has capacity for about 34 full route cycles if the averages and efficiency assumption hold.

What is a route cycle?

A route cycle is one complete operating cycle represented by your average time input, such as depot departure through return or another consistent endpoint.

Why is the result not always a whole number?

The decimal result represents theoretical capacity. The whole-cycle line floors it to completed cycles without assuming partial completion.

Should breaks be removed from productive hours or efficiency?

Use one treatment to avoid double counting. Either reduce productive hours directly or reflect the loss in efficiency.

Can one route contain several deliveries?

Yes, but then the output is route-cycle capacity unless your cycle definition is explicitly one shipment per cycle.

How does this differ from fleet utilization?

Capacity estimates potential throughput. Utilization compares used fleet time or workload with available fleet capacity.