Trailers, Truck Bodies & Specialty Vehicles worked example

Weight Estimate with severity of weight overrun of 3 score: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop severity of weight overrun to 3 score, then walk the calculation through step by step. This weight estimate tool is a weighted risk score for the chance that a trailer or specialty vehicle build comes in over its target curb weight, which matters because overweight units eat into legal payload and can fail axle-rating limits.

The inputs for this scenario

  • Severity of weight overrun: 3 score (the input this scenario stresses; the baseline uses 6)
  • Likelihood of weight overrun: 4 score (held at the documented default)
  • Detectability before shipment: 3 score (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Weight Estimate risk score = severity × 0.40 + occurrence × 0.35 + detection × 0.25.
  • Risk score works out to 3.35 lb at these inputs, and this is the headline figure for the scenario.
  • Severity works out to 3 score at these inputs.
  • Occurrence works out to 4 score at these inputs.
  • Detection works out to 3 score at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where severity of weight overrun sits at 6 score and the headline result is 4.55 lb, this scenario comes in 26.37% below the baseline at 3.35 lb.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to severity of weight overrun, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. This is a relative prioritization score, not an actual weight in pounds; a high score flags where to investigate but does not tell you how many pounds over target a unit will be.

Results at a glance

  • Risk score: 3.35 lb (headline result)
  • Severity: 3 score
  • Occurrence: 4 score
  • Detection: 3 score

Run it with your numbers

  • To rerun this with your own numbers, open the live Weight Estimate calculator, set severity of weight overrun to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.