Module 5 · Lesson 17 of 17
Improve tollgate and pilot exercise
This lesson and the entire Lean Six Sigma Black Belt academy are free of charge — no fees, ever.
Learning objectives
- Explain the purpose of improve tollgate and pilot exercise in a garment-factory improvement project.
- Apply the described method to a representative shop-floor situation.
- Recognize the common mistakes and how to avoid them.
Concept
The Improve tollgate confirms selected solutions address verified causes, have demonstrated results, acceptable risk, and a credible implementation plan.
Required evidence: idea log, CTQ gates, selection matrix, solution FMEA, DOE/pilot protocol, raw data, effect and CI, guardrails, cost-benefit, future state, implementation plan, and Control inputs.
Gate questions test representativeness, practical importance, risk reduction, readiness, and Control handoff.
Garment-factory example
A sewing-line pilot changes needle replacement, machine setup verification, and first-piece controls to reduce seam damage; the tollgate reviews all evidence before rollout.
Method
- Compile evidence pack.
- Independent review.
- Sponsor and process-owner attendance.
- Approve rollout or request rework with due date.
- Transfer artefacts to Control.
Common mistakes
- Scaling from an uncontrolled trial.
- Hiding pilot deviations.
- Claiming benefits before finance validation.
Knowledge check
Pick one answer per question. Explanations appear after you submit.
1. A passing Improve tollgate requires:
2. Pilot deviations should be:
Author: NOSK.life · Last reviewed: 2026-07-21