E=mv^2
Semi: 36000kg
SUV: 3600kg
Compact: 1800kg
Cycle: 360kg
For a semi moving at 100kph, these are the speeds where smaller vehicles would have the same kinetic energy:
SUV: 316kph
Compact: 447kph
Cycle: 1000kph
Just sayin' ;)
11–20 of 34 posts
E=mv^2
Semi: 36000kg
SUV: 3600kg
Compact: 1800kg
Cycle: 360kg
For a semi moving at 100kph, these are the speeds where smaller vehicles would have the same kinetic energy:
SUV: 316kph
Compact: 447kph
Cycle: 1000kph
Just sayin' ;)
Earlier quoted context omitted.
Because he had to explain a situation where a driver in front of him caused a very dangerous situation and felt he had to respond in that way? As much as I love driving, there will be many improvements when we don't have to drive to get to our jobs and things anymore. I'll get to go and play on a race-track, sure; but I won't have to be all hands on deck at 8 or 9 in the morning with everyone else who woke up 30 minu…
The truck driver caused the dangerous situation by tailgating. There's no right to drive at the speed limit, and certainly no justification for causing danger when another driver is annoying you.
If you are in a car it's definitely your responsibility to make sure you're doing the right thing. You're a lot more nimble and more able to make manoeuvres.
Stopped reading and started screaming at the computer after that comment. What can you do? Pay attention to what you're doing before you change lanes. You almost killed someone and you're blaming them? My vehicle has blind spots too, when I'm changing lanes I look to make sure that there isn't someone there prior to changing lanes.
This whole article just screams stereotypical "I own the road" egomaniac trucker to me.
> If you see a truck in your rearview, the first thing you need to do is put down your phone.
Seriously, just assuming that someone is on their phone?
> when you see it's a soccer mom with a van full of kids.
sigh
I know this is in popular mechanics so they're just playing to their audience, but, this is low even for them.
Earlier quoted context omitted.
Because he had to explain a situation where a driver in front of him caused a very dangerous situation and felt he had to respond in that way? As much as I love driving, there will be many improvements when we don't have to drive to get to our jobs and things anymore. I'll get to go and play on a race-track, sure; but I won't have to be all hands on deck at 8 or 9 in the morning with everyone else who woke up 30 minu…
The truck driver caused the dangerous situation by tailgating. There's no right to drive at the speed limit, and certainly no justification for causing danger when another driver is annoying you.
Much of the danger in driving occurs when there's a substantial difference in speed between cars. (I imagine the second most common time there's an accident is when cars are going almost exactly the same speed[1]). Driving 10 under can be very dangerous.
[1] my thinking here is that if you have 2 cars going almost exactly the same speed, but one is sitting in the other's blindspot, then one of them can attempt to change lanes and the other might miss it and suddenly accident.
> I almost ran this guy off the road because I couldn't see him. [...] He was right along my right-hand side. What can I do? Stopped reading and started screaming at the computer after that comment. What can you do? Pay attention to what you're doing before you change lanes. You almost killed someone and you're blaming them? My vehicle has blind spots too, when I'm changing lanes I look to make sure that there isn't…
Your comment just screams stereotypical "I have never driven anything larger than a station wagon" to me.
Seriously, consider the length of a tractor-trailer. Then consider the size of the mirrors and their location. Add in bad weather, where the crap coming off the wheels creates a veritable fog bank alongside and behind every vehicle.
Don't drive in anyone's blind spot. And especially don't drive in a large truck's blind spot. Being legally in the right doesn't matter if you're dead or stuck on the side of the road with weeks of chatting with your insurance agent ahead of you.
> People think we are the safety hazards. But we're not. We know how to drive defensively. E=mv^2 Semi: 36000kg SUV: 3600kg Compact: 1800kg Cycle: 360kg For a semi moving at 100kph, these are the speeds where smaller vehicles would have the same kinetic energy: SUV: 316kph Compact: 447kph Cycle: 1000kph Just sayin' ;)
The biggest issue is overtaking of slow trucks by other trucks. Trucks will indicate and then change lane simultaneously, into gaps that only barely have room for their truck. Bad luck if you are approaching at normal highway speed and now have to brake heavily to avoid rear ending a truck that has just appeared in your lane, travelling 20 mph more slowly. Bad luck if you are the driver that just had a huge truck appear 2 inches behind you and now you have to do an emergency stop. Also bad luck if you happen to be next to the truck and in their blind spot. They just don't care, after all they would not even notice if you rear ended them, or they squashed your car against a side barrier.
Many accidents are caused by this, to the extent that there is talk about banning overtaking by trucks on some highways. Truck drivers are also guilty of travelling way too fast for the conditions, tailgating and other cardinal sins of the road.
This seems to be particularly bad in the UK, as I have lived/worked in other countries and usually truck drives in other countries realize they are driving huge, slow to stop killing machines and are far more aware and respectful of that.
Earlier quoted context omitted.
Comments like this are why I'll cheer for that profession being automated away.
There are a lot of reasons for automated driving and most of them have something to do with human behaviour. Sorry for trying to put the statement about tailgating into perspective.
One thing that you should remember if you are the type of car driver that does this is that truckers are communicating with each other and not all of them are safety minded, or driving a company truck with a phone number on the back. What this means for you is that you may succeed in your little power trip against the truck behind and then have an unpleasant experience with one of the trucks up ahead. It's not right but it does happen. Some of these drivers are sociopaths who would be delighted to run you off the road.
For clarity, I'm not talking about quick little misunderstandings or short periods of distraction while a car driver makes a mobile phone call or sends a text. I'm talking about the parent comment with a truck attempting to pass a slow car and that car speeding up to prevent the pass, and then repeating that process several times. This happens often and it's maddening. You have to just let it go but you do wonder about the car driver, and why they choose to have a pissed off trucker following them. Automation can help with this for sure, and the car driver can go find another person to annoy.
Earlier quoted context omitted.
Comments like this are why I'll cheer for that profession being automated away.
There are a lot of reasons for automated driving and most of them have something to do with human behaviour. Sorry for trying to put the statement about tailgating into perspective.
> I almost ran this guy off the road because I couldn't see him. [...] He was right along my right-hand side. What can I do? Stopped reading and started screaming at the computer after that comment. What can you do? Pay attention to what you're doing before you change lanes. You almost killed someone and you're blaming them? My vehicle has blind spots too, when I'm changing lanes I look to make sure that there isn't…
Let me tell you about a personal experience which may help illustrate the problem, and help you be safer when driving your car around trucks. Years ago I was driving a 'cabover' tractor-trailer (the kind with no hood, it's straight down from the front windows to the bunper). I had only five months experience but I was doing pretty good so far. I came up behind a car on a four-lane highway that was going slow, so I started to pass. The car was black and the sun was low and opposite, so as I began to pass and check my mirrors, I made a mental note that the black car riding on blacktop in the shade was harder to see than the other cars further back. No problem, I accelerated more and the car dropped back near my trailer tires. My exit was a couple miles ahead so I wanted to get back over into the slow lane. I looked in the mirrors and the car was gone. I took a long, hard look in the mirrors again and slowed down, in case the car had sped up again and was in my blind spot next to the truck. Nothing. A pickup truck in the slow lane flashed his lights, which is a courtesy signal meaning 'come on back over' that a lot of truckers and work trucks do. I started to change lanes back to the slow lane, nice and slowly, 3-4 seconds of turn signal in advance, and heard tires starting to skid. I held position and scanned all my mirrors again, trying to find where the noise was coming from. I slowed down more. No clue, just a loud skidding noise of tires dragging on pavement. It sounded like a long skid and I was waiting for the impact sound. I thought I'd better get over in the slow lane because someone was in the middle of a huge skid and was going to crash. I completed the lane change and slowed down more, and was horrified to see the black car flop around sideways in front of me, stuck to my bumper. A quick panic stop and I was relieved to see the man inside was fine. The side of his car was all chewed up from the tire lug bolts spinning against his door but he was calm and okay. When the police came he told them he was trying to stay in the shade next to me because he didn't like the low sun in his eyes, and he apologized for 'causing the accident'. It was totally my fault and the police cited me, but they gave me a really minor ticket for some obscure law because of the man's foolish decision. It was 100% my fault but he could have done more to help me avoid him, that's what I was making a genuine effort to do. His speeding up and slowing down to match my speed was dangerous, and you should never do this around trucks. They really can't see you well and there are a lot of other cars around they are trying to keep track of. Hope that helps you avoid an accident in your car some day.