Lowering a posted speed limit will increase safety and decrease the number of crashes.
Raising the posted speed limit increases traffic speed.
Drivers will always travel at 5 mph over the posted speed limit.
Do higher speed limits cause more accidents?
Do higher speed limits cause more car accidents? No, but they do cause more severe ones. Accidents that occur at high speeds are more often fatal, since high-velocity objects collide with greater force.
How much more likely are you to crash while speeding?
Going faster than the surrounding traffic has even worse consequences, the same study found: driving at 80 miles per hour on a road where traffic is moving at 70 increases your chances of a crash by 31 percent, a crash with an injury by 49 percent, and a fatality by 71 percent.
Why driving over the speed limit is dangerous?
Speeding is not just driving above the posted speed limit, but includes driving too fast for road conditions, or any other speed-related violation charged (racing, speed greater than reasonable, and exceeding special speed limits). Speeding is illegal. Here’s the most important danger of speeding: Speeding kills.
What is the safest speed to drive?
As an example, if it’s clear, fine weather with good visibility and most traffic is travelling at 65mph, then 65mph is a safe speed, as long as you feel competent to drive that fast based on the list above. However, if it’s nighttime with torrential rain and roadworks in one lane, perhaps 20–30mph is the safest speed.