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PPF solves that problem - except for the windshield. ClearPlex anyone?Yes, drafting can save a lot of energy. The trade-off, as mentioned above, is paint and windshield damage from sand and other road debris.
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PPF solves that problem - except for the windshield. ClearPlex anyone?Yes, drafting can save a lot of energy. The trade-off, as mentioned above, is paint and windshield damage from sand and other road debris.
Mythbusters (episode 80) did a good test on this years ago Mythbusters: drafting 10 feet behind a big rig will improve mileage 39 percent on a controlled strip so they could get repeatable results.
The short results were (@ 55 mph)
Two other numbers make this scary to capitalize on:
- 11% improvement @ 100 feet behind
- 20% improvement @ 50 feet behind
- 27% improvement @ 20 feet behind
- 10% improvement @ 10 feet behind
"Safe" following distance is considered to be 3 seconds, or 242 ft @ 55 mph, 351 ft @ 80 mph.
- 5280 feet in a mile, 3600 seconds in an hour. So 55 mph is 80.7 ft/sec, 80 mph is 117 ft/sec
- Human reaction time is right around 3/4 of a second. At 55 mph you've consumed 60 feet in that time, at 80 mph you've consumed 88 ft
So this falls into the "yes you can" and "yes your nuts" if you're getting close enough to get significant savings as if the truck runs over something in the road, swerves to avoid a stopped object, or brakes suddenly, you're toast. Best to wait for Tesla to get the "convoy" functionality deployed for the Semi and provides a way for 3/Y to join a Semi "convoy" on FSD
What if the truck hits a stopped object in front of it, like a multi-car accident. There goes your buffer.I would say the sweet spot is @75 feet. Plenty of distance and good improvement. 242 feet follow distance seems is crazy, I would say75 - 100 ft is normal. When you calculate reaction time, you have to consider the braking time of the truck in front of you. If he slams on his brakes he will not come to an instant stop.
I would say the sweet spot is @75 feet. Plenty of distance and good improvement. 242 feet follow distance seems is crazy, I would say75 - 100 ft is normal. When you calculate reaction time, you have to consider the braking time of the truck in front of you. If he slams on his brakes he will not come to an instant stop.
75 feet is WAY too close. That's less than a second of closing distance at highway speed. Truck hits something hard, you're done for.
Stole this chart from Safelite, but it's pretty accurate.
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People saying Teslas 3 is too close are all full of crap . If your in minimal traffic running at 3 it is perfectly safe . After all it’s a computer that can make instant decisions, these people act like the vehicle they are following stop instantly . No one follows at 300 feet even in minor traffic .What would be interesting to see is the average following distance, and not best practices ones. Like lets for a second ignore rules like the 2 second rule or the rule to follow trucks at a larger distance.
I ask this because I firmly believe that most drivers in congested areas follow way too closely, and this is why I think TACC is actually a safety feature. It forces people to have a bit more distance.
I tend to use a setting of 3 under normal situations, and 5 if I have some reason why I want to be farther back (like behind trucks). With a setting of 3 it's pretty common for people to change lanes into the lane in front of me either because they need to get into my lane or they were behind me, and felt like I was giving too much distance.
Now I don't know the distance a setting of 3 translates into. My understanding is that it's time based, and 3 would be 3 seconds. But, other people claim that each step is a half second so a setting of 3 would be 1.5second.
To my eyes it appears to be roughly about 6 car lengths (at 60mph). To those that say it's too close I'd say that I'm pretty average or above average in how much distance I give. I'd really have to use a setting of 1 to come close to what I see on average.
People saying Teslas 3 is too close are all full of crap . If your in minimal traffic running at 3 it is perfectly safe . After all it’s a computer that can make instant decisions, these people act like the vehicle they are following stop instantly . No one follows at 300 feet even in minor traffic .
I expect this too, although not as soon as you. It really is the obvious way to enable 80+ mph long distance travel without needing a 120 kWh batteryWe are a software delivery away from being able to join a "train" where a group of cars coordinate to run in a high speed lane as a single unit. Lead car would be compensated for breaking wind and all in group would benefit from gang drafting.
Software would maintain bumper to bumper spacing and manage "join and exit" maneuvering.
I would like to see data to back up that assertion, since the actual AP implementation is a trade-off with phantom braking.People saying Teslas 3 is too close are all full of crap . If your in minimal traffic running at 3 it is perfectly safe . After all it’s a computer that can make instant decisions, these people act like the vehicle they are following stop instantly . No one follows at 300 feet even in minor traffic .
C-Bond helps protect windshields...PPF solves that problem - except for the windshield. ClearPlex anyone?
I would say the sweet spot is @75 feet. Plenty of distance and good improvement. 242 feet follow distance seems is crazy, I would say75 - 100 ft is normal. When you calculate reaction time, you have to consider the braking time of the truck in front of you. If he slams on his brakes he will not come to an instant stop.
People saying Teslas 3 is too close are all full of crap . If your in minimal traffic running at 3 it is perfectly safe . After all it’s a computer that can make instant decisions, these people act like the vehicle they are following stop instantly . No one follows at 300 feet even in minor traffic .
Finally I pull into the left lane so they pass. Then I’m stuck behind them because now they are driving slower than I was. Pass them again and you see them with a flip phone plastered to their ear.
Tesla's autonomous trucks will move in platoons, report saysWe are a software delivery away from being able to join a "train" where a group of cars coordinate to run in a high speed lane as a single unit. Lead car would be compensated for breaking wind and all in group would benefit from gang drafting.
Software would maintain bumper to bumper spacing and manage "join and exit" maneuvering.