Raising Speed Limits Cost Lives

less risky passing from people going too slow clogging traffic lanes causing too many drivers to have to make decisions. There will always be poor drivers causing accidents, but slow drivers force too many people to have to pass -raising it 5 MPH don't know if it alleviates anything or the slow drivers are going to continue to force poor decisions or if the speeders will slow their roll a little. We'll see!
 
You could set the speed limit to 80 and people will still drive 10 mph over the limit. Only thing is, the roads are in such terrible shape that you can’t stay on the road.
I used to complain about the Iowa roads a lot, then I had to do even more driving in southern Minnesota and I learned to appreciate our poor roads.
 
How about simple math? More drivers, more accidents.
The problem is that the forces that occur on vehicles and people during a crash do not involve simple math.
The equation to find kinetic energy uses the square of velocity, and humans don’t have a good intuitive ability to comprehend those differences at a glance.
We see 55 increasing to 60 and think that it’s not even 1/10 of an increase, so it must be marginal.
Punch in the values for a pair of 4,000 pound vehicles in a head-on collision at 110 and 120 mph, and you’ll see the difference is well over 500,000 additional pounds of force.
 
The problem is that the forces that occur on vehicles and people during a crash do not involve simple math.
The equation to find kinetic energy uses the square of velocity, and humans don’t have a good intuitive ability to comprehend those differences at a glance.
We see 55 increasing to 60 and think that it’s not even 1/10 of an increase, so it must be marginal.
Punch in the values for a pair of 4,000 pound vehicles in a head-on collision at 110 and 120 mph, and you’ll see the difference is well over 500,000 additional pounds of force.
That only accounts for an increased severity, not number. IMO, more cars and more distracted drivers are far greater causes to the increase in accidents.

Speed may contribute, but that isn't happening in a bubble.
 
You could set the speed limit to 80 and people will still drive 10 mph over the limit. Only thing is, the roads are in such terrible shape that you can’t stay on the road.
My experience living in a state with higher speed limits that isn’t really the case.

Commuting in CO where it was 75 it seemed that almost everybody was 75-80. Some for the road conditions reasons and some due to how it is enforced. In SD where it’s 80 you don’t see people driving too much faster.

In Iowa I pretty much set my cruise at 79 and have never been pulled over on the interstate.

I really think in Iowa on two lane highways there needs to at least tighter enforcement during planting and harvest season. Most people are pretty aware of farm traffic but there are plenty driving way too fast on highways where you might go over a hill and have a combine or tractor. I would even be ok with increases in speed limits outside of those times, but we need to be really cautious during heavy farm traffic periods.
 
You could set the speed limit to 80 and people will still drive 10 mph over the limit. Only thing is, the roads are in such terrible shape that you can’t stay on the road.
Is that really what causes accidents?
 

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