All key intersections in the city are already signalized.

It's going to be a terrific improvement at a very key intersection.

The first group had taken up position in all the key intersections so that they could control anyone who attempted to pass.

Tonight, there were reports of firefights at key intersections and highways, including points deep inside the city.

In Manhattan, some have already been stationed at key intersections for the last two months.

His computers have already taken over the timing of traffic lights at several dozen key intersections.

Several hundred activists arrived in the deserted streets near the convention center and began to take control of key intersections.

It recommends that two traffic control officers be placed at each key intersection.

There will be 28 message signs and traffic officers at 55 key intersections directing people to the lots.

They were fighting for control of a key intersection.