Control Circuits for Streetlights

i am an electrical engg student doing my final project in streetlighting

what type of control circuit is good for street lighting...circuit with timer /sensor...? or can i use both in one circuit?

Anyone has the control circuit diagram?? Pls show me the diagram.. hixhix.. Thanxx..

You have two ways of making the control circuit. One is by way of 24 hours timer in the circuit which will switch ON and OFF the contactor at designated time. Secondly by way of photoelectric sensor in the circuit. This sensor can be adjusted to certain lux of light and will Switch ON or OFF the contactor if lux fall below the set limit or raises above the set limit respectively. Second method is most preferred method as the lights switch ON early during winter and late in summer which is required.