loading

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.


1. Speed bump

A speed bump is a traffic calming device that use vertical deflection to slow motor-vehicle traffic in order to improve safety conditions. Variations include the speed hump, speed cushion and speed table. These designs all help keep speeds safe and roads friendly for people, especially in busy or residential areas.

  • Slow down to about 10–20 km/h (5–15 mph).
  • Going too fast can damage your car or feel very uncomfortable.

Warning for a speed bump. (Haute-Savoie, France) © Wikimedia.org/Marc Mongenet, CC BY-SA