Commercial Vehicle, Bus & Coach Manufacturing worked example

Line Balance at 59% line balance efficiency: a worked example in commercial vehicle, bus & coach manufacturing

Here is what the math looks like when conditions slip. We hold every other input steady and drop line balance efficiency to 59%, then walk the calculation through step by step. Estimate balanced output rate for a commercial vehicle assembly line or major subassembly line.

The inputs for this scenario

  • Completed vehicles or body sets: 34 units (held at the documented default)
  • Available line production time: 8 hr (held at the documented default)
  • Line balance efficiency: 59 % (the input this scenario stresses; the baseline uses 82)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross line balance = completed vehicles or body sets รท available line production time.
  • Effective throughput works out to 2.51 vehicles / hr at these inputs, and this is the headline figure for the scenario.
  • Raw throughput works out to 4.25 vehicles / hr at these inputs.
  • Efficiency works out to 59 % at these inputs.
  • available line production time works out to 8 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where line balance efficiency sits at 82% and the headline result is 3.49 vehicles / hr, this scenario comes in 28.05% below the baseline at 2.51 vehicles / hr.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to line balance efficiency, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes a single efficiency figure captures all balance loss; it does not locate the bottleneck station or distinguish balance loss from downtime, scrap, or starvation.

Results at a glance

  • Effective throughput: 2.51 vehicles / hr (headline result)
  • Raw throughput: 4.25 vehicles / hr
  • Efficiency: 59 %
  • available line production time: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Line Balance calculator, set line balance efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.