Tollgate Review is a controlled review mechanism where the project team along with the sponsor reviews and checks the progress and status of the deliverables (each phase of a six sigma project has certain deliverables). Alternatively, known as gate reviews, these checkpoints also enable the team to provide project update to senior management, seek guidance and do course corrections (if required) and proceed to the next phase of the project.
An application-oriented question on the topic along with responses can be seen below. The best answer was provided by Natwar Lal & Jayaram T.
Applause for the respondents - Natwar Lal & Jayaram T
Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's in-house expert.