this post was submitted on 18 Oct 2025
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It’s not speed that kills. It’s acceleration. Everyone doing 70 means nobody is an obstacle. But one person doing 55 in that situation is effectively a rolling road block. Even if they’re not hit by someone else they’ll cause accidents as people change lanes to get around them.
“It’s not the speed that kills”
Yes it is. It’s the speed and the weight.
The impact force doubles from 55 to 70. That’s a spectacular difference. Driving cars is already the most dangerous thing we do and this talk about if computers make good judgment calls or not? They make better judgment calls than humans every time.
Just because people want to speed on the road doesn’t mean we need to accept the crazy idea that it’s somehow safe for them.
Yes but if everyone is doing 70 there won’t be impacts between the cars.
Speed is also not part of force. That’s acceleration times mass. Sudden stops and starts are deadly because of acceleration, not speed.
Obviously any road where people are doing 55 shouldn’t have pedestrians or cyclists.
Acceleration is a derivative of velocity
Which is also a vector. Speed is a scalar.
Wow look at the brain on this one everybody