Give the green light.
Give the green light.
To 'give the green light' means to give permission or approval to begin a project, action, or procedure. This idiom has its roots in traffic signals, where a green light indicates it's safe to proceed. In business, getting the green light means your proposal has been approved, and you can move forward with execution, offering both a literal and metaphorical start to ventures.
They gave the green light for the project.
The project got approval to start.
After weeks of planning, the boss finally gave the green light to start.
The boss approved the plans after weeks of planning.
The committee gave the green light to the new regulations after a thorough review.
The committee approved the new regulations after a review.