Dynamic Speed Bumps
Dynamic speed bumps differ from conventional speed bumps in that they only activate if a vehicle is traveling above a certain speed. Vehicles traveling below this speed will not experience the discomfort of a conventional speed bump. Dynamic speed bumps may allow the passage of emergency vehicles at higher speeds.
In one design, a rubber housing is fitted with a pressure valve which determines the speed of a vehicle. If the vehicle is traveling below the set speed the valve opens allowing the bump to deflate as the vehicle drives over it, but remains closed if the vehicle is traveling too fast. The valve can also be set to allow heavy vehicles, such as fire trucks, ambulances, and buses to cross at higher speeds.
Read more about this topic: Speed Bump
Famous quotes containing the words dynamic, speed and/or bumps:
“Knowledge about life is one thing; effective occupation of a place in life, with its dynamic currents passing through your being, is another.”
—William James (1842–1910)
“There exist certain individuals who are, by nature, given purely to contemplation and are utterly unsuited to action, and who, nevertheless, under a mysterious and unknown impulse, sometimes act with a speed which they themselves would have thought beyond them.”
—Charles Baudelaire (1821–1867)
“America does to me what I knew it would do: it just bumps me.... The people charge at you like trucks coming down on you—no awareness. But one tries to dodge aside in time. Bump! bump! go the trucks. And that is human contact.”
—D.H. (David Herbert)