Commercial Vehicle, Bus & Coach Manufacturing worked example

Road Test Capacity at 63% road-test availability: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop road-test availability to 63%, then walk the calculation through step by step. Estimate how many finished commercial vehicles can complete road testing in a planned test window.

The inputs for this scenario

  • Vehicles completed per road-test cycle: 2 units / cycle (held at the documented default)
  • Planned road-test cycles: 24 cycles (held at the documented default)
  • Road-test availability: 63 % (the input this scenario stresses; the baseline uses 88)
  • First-pass road-test yield: 92 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross road test capacity = vehicles completed per road-test cycle × planned road-test cycles.
  • usable road test capacity works out to 27.82 vehicles at these inputs, and this is the headline figure for the scenario.
  • gross road test capacity works out to 48 vehicles at these inputs.
  • road test capacity lost to downtime works out to 17.76 vehicles at these inputs.
  • road test capacity lost to retest or rework works out to 2.42 vehicles at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where road-test availability sits at 88% and the headline result is 38.86 vehicles, this scenario comes in 28.41% below the baseline at 27.82 vehicles.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to road-test availability, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes one retest absorbs a full slot — heavy rework loops or weather-dependent track closures can erode real capacity below this estimate.

Results at a glance

  • usable road test capacity: 27.82 vehicles (headline result)
  • gross road test capacity: 48 vehicles
  • road test capacity lost to downtime: 17.76 vehicles
  • road test capacity lost to retest or rework: 2.42 vehicles

Run it with your numbers

  • To rerun this with your own numbers, open the live Road Test Capacity calculator, set road-test availability to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.