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Speed limits are changed for several reasons:

  • There was a traffic survey that indicated more than 80% of cars were traveling less than the new speed, traffic survey theory says that 10 to 20 % of people will speed no matter what the limit is, the rest will travel at a safe and comfortable speed for the road.
  • There is a change in the road that made the traffic people change it for safety reasons
  • A group of people ( or even just one noisy one ) got together and complained
  • It is a test section of road where they want to evaluate a higher speed like Nevada having some stretches @ 80 mph
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Wiki User

14y ago

What else can I help you with?