The blue lights on top of traffic signals, also known as confirmation lights, are designed to assist law enforcement detect drivers who run red lights.

Phoenix will enter into a $12 million contract with American Traffic Solutions for photo enforcement to curb speeders and red-light runners.

Phoenix will enter into a $12 million contract with American Traffic Solutions for photo enforcement to curb speeders and red-light runners.

Phoenix will enter into a $12 million contract with American Traffic Solutions for photo enforcement to curb speeders and red-light runners.

The Jenoptik VECTOR-SR is an advanced speed camera that will change the way traffic enforcement is carried out on British ...