This was a reference to the Oak tree that stood afar Gosling's office. traffic lights symbol drawing - traffic light stock illustrations red light - traffic light stock pictures, royalty-free photos & images emergency services thin line icons - editable stroke - traffic light stock illustrations.It consists of three major parts- a dial timer, a solenoid and a cam assembly. The controller was an electro mechanical controller which consists of mechanical systems operated electrically. Traditional Traffic light controllers used a fixed predetermined schedule for traffic inflow for each direction in the junction.
