Book

This informative book is designed for students who want to pass the quiz with confidence. Packed with clear explanations and visual examples, it keeps you engaged while helping you learn faster and succeed.

United Nations

1. Street lights

Street lights (also called street lamps or roadway lights) are outdoor lighting fixtures installed along roads, sidewalks, and public areas to illuminate the streets at night for safety and visibility. Street lighting plays a big role in urban planning and public safety, especially in busy or high-risk areas.

  • Improve visibility for drivers, cyclists, and pedestrians.
  • Reduce accidents and help prevent crime.
  • Light up intersections, crossings, and sidewalks.
  • Make it easier to navigate roads at night.
  • Common Types of Street Lights:
    • High-pressure sodium (HPS) – Give off a yellow-orange glow (older style).
    • LED street lights – Bright, energy-efficient, and long-lasting (modern standard).
    • Solar-powered lights – Use solar panels to charge during the day.
    • Smart street lights – Can adjust brightness, detect motion, or report outages automatically.
Street lights

Street lights illuminating the motorway to improve visibility. (Ma Liu Shui, Hong Kong) © Wikimedia.org/Exploringlife, CC BY-SA

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