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Motorists consider the driving environment more than the posted speed limit. Studies show that this 85th percentile is the safest speed level. Speed limits are set using the speed of which 85% of traffic flows. Typically, the prevailing speed is what traffic engineers use to determine what the official speed limit should be on any given road. But more often than not, the flow of traffic is above the posted speed limit. Sometimes the flow of traffic is below the speed limit. Heavy Traffic on Hot Day What is the Flow of Traffic?Īccording to the Urban Dictionary, the flow of traffic is “the speed that traffic is going at any given time.” It’s a term we hear a lot in reference to the general rules of the road. Did you consider yourself speeding? Do you think you were being dangerous? We break down the flow of traffic vs speed limit so that you can stay safe on the roads and keep others safe, too.
Why we need speed limits driver#
But what if they’re just traveling 5 or 6 miles per hour above the speed limit? What if the driver is simply going with the flow of traffic? Maybe you’ve been that person driving a few miles per hour above the legal speed limit. That’s 25% of all traffic deaths! Most of us can agree that a car racing down the highway is dangerous. In 2018, speeding alone caused 9,378 fatal accidents. According to the National Highway Traffic Safety Administration, there are about 40,000 car accident-related fatalities in the United States every year. Speeding is the second most common cause of car accidents in the United States.