Do you know why the speed limts are soooooo slow?
Do you think that lower speeds mean safer roads? Well, you’ll never be a traffic engineer with that attitude. High-speed roads (85th percentile speed over 45 mph) carry the vast majority of our traffic, but they have fewer accidents overall than low-speed roads. Yes, high-speed accidents are more dangerous than low-speed ones, but the accidents themselves are fewer. What’s really dangerous is the speed differential. When one car is driving the speed limit, 20 mph, and the guy behind him doesn’t notice the sign and drives the design speed, 45 mph, there’s a 25 mph speed differential and a big potential for accidents. If everyone drives between 40 and 50 mph, the potential is much lower.
Click here to read more about the design speed of the road and the posted speed limit.
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