A street lighting system is a raised source of light on the edge of a road or path. Similar lights may be found on a railway platform. When urban electric power distribution appear in developed countries, street lights on urban streets used or sometimes led.
Many lamps have light-sensitive photocells that activate the lamp automatically when needed, at times when there is little-to-no ambient light, such as at dusk, dawn, or at the onset of dark weather conditions. This function in older lighting systems could be performed with the aid of a solar dial. Many street light systems are being connected underground instead of wiring from one utility post to another. Street lights are an important source of public security lighting intended to reduce crime.
Light Efficiency of Street lighting System
Light efficiency is a important factor that affect street lighting system. A 250 watt high pressure sodium vapour sodium lamps can be easily replaced with 100 watt LED street lamps because of high efficiency of LED street lamps. Many projects or tender have clear requirement of light efficiency because high light efficiency means less energy consumption.
Advantages of Street lighting System
- Efficacy - Get light only in require places with minimum losses
- Luminance - Brightness or illumination level on road
- Glare - Excessive or irritating light reduces visibility causing wide light disturbance
Advantages of Street lighting System
- High quality illumination ensures clear visibility and road safety at night.
- Safety to the public property
- Reduces crimes
Application of Street lighting System
The main application of street lighting system has been listed below.
- Street Lighting
- Highway Lighting
- Intersection Lighting
- Square Lighting
- Parking Lot Lighting
- Foot Path Lighting
- Outdoor Industrial or Logistic Area Lighting