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All Cars Sold in the US Will Soon Have to Be Able to Automatically Avoid a Crash

theautopian.com

51–60 of 102 posts

Re: All Cars Sold in the US Will Soon Have to Be Able to Automatically Avoid a Crash

#51

Earlier quoted context omitted.

… empty and well paved country roads are a thing

Most vehicles (and most drivers) aren't capable of safely driving at 90mph, no matter how "empty" the road is.

I’m not sure where you are getting your talking point, but here in Texas, there are stretches of highway where people safely pass at 90-100 mph with no issue. We have a lot of gigantic, straight, barren countryside.

Re: All Cars Sold in the US Will Soon Have to Be Able to Automatically Avoid a Crash

#53

Laws to make cars smaller and drive slower will do 100x more to make crashes less deadly than fancy electronic gizmos. Not to mention all these electronics make the car much more expensive and harder to repair.

But they would also decrease the utility of the cars.

Re: All Cars Sold in the US Will Soon Have to Be Able to Automatically Avoid a Crash

#54

Earlier quoted context omitted.

A law that prevents any FWD vehicle from going over 90 MPH, or offering significant insurance discounts, would go a long way towards reducing fatalities. There is no reason for any casual motorist to be going 91+MPH on surface streets or highways.

There are freeways in Texas with speed limits of 85 MPH. 5 MPH of wiggle room for emergencies seems like a bad idea IMO.

What emergency do you have in mind where 90mph is too slow? The average driver is far, far more likely to cause another emergency at that speed than avoid one.

Re: All Cars Sold in the US Will Soon Have to Be Able to Automatically Avoid a Crash

#55

Earlier quoted context omitted.

Oh I was quite surprised. I drive a Subaru Forester myself and thought it does quite well.

I remember original Foresters were based on sedan chassis so had pretty snappy handling for SUV but dunno about newer ones.

All newer Subaru models now share a modular platform - https://en.wikipedia.org/wiki/Subaru_Global_Platform - except for the BRZ which is on Toyota’s analog. But yeah originally Forester was based on the Impreza.

Re: All Cars Sold in the US Will Soon Have to Be Able to Automatically Avoid a Crash

#56

Laws to make cars smaller and drive slower will do 100x more to make crashes less deadly than fancy electronic gizmos. Not to mention all these electronics make the car much more expensive and harder to repair.

But they would also decrease the utility of the cars.

Entirely depends on your definition of utility. For some of us it's a simple binary function: "will it get me from home to work in less than X minutes"

Re: All Cars Sold in the US Will Soon Have to Be Able to Automatically Avoid a Crash

#57
post #37

Earlier quoted context omitted.

Speed limits of 85 MPH sounds like the bad idea to me.

You haven't driven through Texas. The stretch between El Paso and Dallas is 9 hours and there's almost nothing in-between.

Indeed, I haven't. I'm from rather farther north. I have driven reasonably long distances at reasonably high speeds though. If you ask me whether I'd have rather save 30 minutes on a 9 hour drive or have the speed limit top out at 85* I'm definitely picking the latter. If you ask me if I'd rather have people driving through a community I'm living in at 90 mph or 85 mph I'm definitely picking the latter.

* El Paso to Dallas is 635 miles, driving the whole way at 85 mph would take 25 more minutes than driving the whole way at 90mph. The reality is even further in 85 mph's favor because you aren't able to sustain 90mph the whole way and we're only going slower when we would be able to.

Re: All Cars Sold in the US Will Soon Have to Be Able to Automatically Avoid a Crash

#58

Earlier quoted context omitted.

A law that prevents any FWD vehicle from going over 90 MPH, or offering significant insurance discounts, would go a long way towards reducing fatalities. There is no reason for any casual motorist to be going 91+MPH on surface streets or highways.

there are a few reasons though, like life threatening emergencies when the road is basically empty

How many situations are there where going over 90mph is make or break? Unless you’re Keanu Reeves driving a bus improbably, that seems like a freakishly rare situation compared to the number of crashes caused by people incorrectly thinking they could safely drive that speed – and with so much energy involved, those are usually fatal.

Re: All Cars Sold in the US Will Soon Have to Be Able to Automatically Avoid a Crash

#59
post #54

Earlier quoted context omitted.

There are freeways in Texas with speed limits of 85 MPH. 5 MPH of wiggle room for emergencies seems like a bad idea IMO.

What emergency do you have in mind where 90mph is too slow? The average driver is far, far more likely to cause another emergency at that speed than avoid one.

I think his idea is that there are times where the safest thing to do is to accelerate out of a dangerous situation on the road. Which is sort of true, but at those speeds most cars tend not to accelerate very quickly so I don't find it particularly convincing.

Re: All Cars Sold in the US Will Soon Have to Be Able to Automatically Avoid a Crash

#60

Laws to make cars smaller and drive slower will do 100x more to make crashes less deadly than fancy electronic gizmos. Not to mention all these electronics make the car much more expensive and harder to repair.

People don't want that. Butts are getting bigger and people don't want to drive slow.

As a matter of fact I think forcing people to drive slower seems to cause more accidents. I mean moving away from 85th percentile engineering criteria - I mean laws making people drive slower ignoring engineering design.

That said, I'll bet even if emergency braking fails to prevent a collision, even slowing down a modest amount will pay off with significant crash energy reduction.

(energy goes up with square of velocity, so e = 1/2mv^2)

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