this post was submitted on 30 Oct 2024
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I hate Tesla as much as the next guy in here.
But I learned at my driving lessons that you shouldn't hit the breaks for animals running into your lane, because it can result in a car crash that's way worse. (think truck behind you with a much longer break length.)
Don't know if there's different rules.
If you watch the video, the deer was standing on a strip of off coloured pavement, and also had about the same length as the dotted line. Not sure how much colour information comes through at night on those cameras.
The point here isn't actually "should it have stopped for the deer" , it's "if the system can't even see the deer, how could it be expected to distinguish between a deer and a child?"
The calculus changes incredibly between a deer and a child.
Agree, it didn't do anything to avoid the obstacle. A human could probably see it as an obstacle and try to swerve to the side, albeit not knowing what it is. Not saying it's possible to avoid, but some reaction would be made.
Attempting to swerve aside at that speed results in over correction, followed by loss of control and then a rollover crash. Happens all the time to people who aren't aware / don't remember that you're supposed to hit deer head on.
This isn’t true. You shouldn’t jerk the wheel and swerve to avoid an animal, but if you can do it safely you absolutely should. Not only to avoid damage, but to prevent it coming through the windshield. I’ve seen this same idea in a few different comments here, but growing up in deer infested upstate NY, “hit it head on” is something I’ve never heard. Not from parents/relatives, not from driver’s ed, not from the internet until today. Keep it out of the ditch but absolutely avoid hitting the deer if you can. You don’t need to jerk the wheel to move 4-6 feet to the right, into the shoulder.
I'd imagine there's a few reasons for the variation in driver training between upstate NY and Wyoming.
The way you describe upstate NY is how it was taught to me when I grew up in Nebraska but it's not what they advise in Wyoming. Here you stay in your lane and slow down as much as you can before impact.
I specifically said to not swerve or jerk the wheel. I’m talking about a controlled movement a few feet to the side, safety permitting, to strike a glancing blow on the animal. Especially with a larger animal that is more likely to come through the windshield, this is important. You don’t need to hit any animal head on if you can safely avoid it. I’m talking about a slow, controlled movement while emergency braking, not a “twitch onto the shoulder” There’s nothing wrong with this, and I’d argue a glancing blow is better than hitting animals head on. A multitude of factors will play into “can you move over safely” such as available space, weather, hazards, etc. I don’t feel the instruction that you’re “supposed to hit them head on” is wise advice regardless. Maybe this was true before ABS, but steering while braking hard is something modern vehicles have little issue with.
The idea of don't swerve for deer is very common and is taught in driving schools. If you've never heard it until today, well you were let down and today you learn. You don't know dismiss it because you haven't heard it.
Swerving is dangerous and even if you think you can do it safely, having a deer appear while travelling at high speeds is risky, even more so at night.
You're supposed to slow down but stay in lane.
The reason you're supposed to swerve for things like Moose is because moose are big as fuck and tall, and if you hit one head on, you will cut the legs out from under it, and it's massive body will roll through the windshield and crush you, killing you or causing massive bodily harm.
This is from the Virginia DMV for example (emphasis mine). Them not having something about moose is actually bad as well.
https://www.dmv.virginia.gov/sites/default/files/forms/dmv39d.pdf
Deer/Large Animal Hazards Tens of thousands of crashes with deer, elk, and bears take place in Virginia each year, resulting in fatalities, injuries and costly vehicle damage. To avoid hitting a deer or other large animal:
Wait, are you saying that Virginia not mentioning what to do if a moose is in the road is “bad”?
Considering that the northern-most part of Virginia is still about 350 mi south of the closest range of moose, it would be pointless if not absurd for them to include it.
I dunno where that map is from but it's wrong. Moose range extends as far south as Wyoming and I know they have them in Colorado as well. Not just the occasional sighting either, they have hunting seasons for Moose.
Do people from Virginia never travel 350miles north?
The guidance on that page is incorrect and if that's what they teach it might kill someone.
A DMV is accountable for driving laws and practices in their own state, not educating people about every possible driving condition anywhere.
Did you read the second sentence I wrote? Of course don’t swerve. That doesn’t mean you have to hit them head on all the time. It’s okay to hit deer head on, but you’re not “supposed to” as the comment I was replying to says. If you can safely move over a few feet and make it a glancing blow, or miss altogether, that’s better and safer than head on. We have antilock brakes ubiquitously now, you can steer and brake simultaneously. If you’ve got shoulder to use, use it.
If you can safely change lanes then of course change lanes as your normally would do to avoid anything in your lane.
Beyond that it's now dangerous. Stay in lane, hit the deer.
If you wouldn't normally change lanes like that, then don't do it for the deer.
Agreed. I’ve just never heard “you’re supposed to hit them head on”
Hit the deer head on, but swerve for moose and elk.