A street light, light pole, lamp pole, lamppost, street lamp, light standard, or lamp standard is a raised source of light on the edge of a road or path.
Types of street lights
Street lighting provides a number of important benefits. It can be used to promote security in urban areas and to increase the quality of life by artificially extending the hours in which it is light so that activity can take place. Street lighting also improves safety for drivers, riders, and pedestrians.
High Pressure Sodium (HPS) lamps are one of the most common bulbs for street lights in existence today. They produce white light through a mixture of different gases and they are highly preferred because of less maintenance.
Parts of a street light
The most common streetlight operating voltage was 120 volts (62%) followed by 240 volts (28%). Most entities that own streetlights (82%) use individual photocells to control the on/off function of the streetlight