Practice question

What is the primary purpose of the 'permissive period' in coordinated signal operation?

To allow emergency vehicles to override the signal
To define the window during which the coordinated phase can gap out early and yield time to side streets
To permit pedestrians to start crossing during flashing don't walk
To allow left-turn phases to operate in permitted mode

Answer: B — To define the window during which the coordinated phase can gap out early and yield time to side streets

The correct answer is shown above. Try the full quiz for additional practice.