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Old 05-25-2016, 10:05 PM   #106
xoxoxoBruce
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Now, Johnny Isakson, the senior U.S. Senator from Georgia, wants to keep those trucks from going faster than 65 mph.

“We'll put speed governors on all trucks at 65 miles an hour,” Isakson said. [That] controls the speed they'll go [and] keeps them under the speed limit, which is most times 70 [mph] but is far more safe for the people on the highways with them.”
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Old 05-26-2016, 09:16 PM   #107
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Of course, limit the trucks with expert drivers but not the cars, which essentially have no top limit and drivers who for the most part, learned from a family member at 16 and have had no further training since. I see them all day long, ten to twenty mph over, changing lanes illegally, tailgating, exiting from the left lane, failing to yield the right-of-way and much more.

Big companies are behind the push for a de facto national speed limit on one class of vehicle, a la Canada because it will eliminate the competition from independent drivers who can't haul more but can do it faster than they can.

I would rather see mandatory black boxes in all cars and trucks (we already have them) but coupled to dashcam footage from the front and both sides. Then the lying and misdirections from all involved will cease and have the added benefit of cutting down on frivolous lawsuits.
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Old 05-27-2016, 11:16 AM   #108
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Well now you're just making sense.
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Old 05-27-2016, 11:42 AM   #109
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I went and looked up what made them want to put in limits. It was an incident last year, when 5 students were killed when a truck driver was texting and apparently it was porn and he wasn't paying attention and etc.

So this is where "safety" fails us. If he is on that stretch of road at 75 instead of 65, he is actually on it for a smaller amount of time, and less of that time is unattentive. Students are run into at 75 instead of 65, but it probably happens less often.

You could lower the speed to a rate where it guarantees no road fatalities... except for the fatalities where a critical medical package doesn't arrive on time, or because all goods and services are slightly more expensive due to shipping costs... or because we're on I-95 for 27 hours just trying to get to Orlando and we shoot ourselves and our family...

And, really, after my Tesla test drive, I see it's obviously only a few years out: automation is going to address this. Leave the speeds where they are, because the systems will prevent anyone running into students.

At any speed. Raise the limits, that's the future.
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Old 05-27-2016, 11:47 AM   #110
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When the system gets advanced enough, we won't need traffic signals any longer, and pedestrians will have homing beacons they wear (probably built into their phones) that make the cars stop for them as they approach a curb to cross the street.
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Old 05-27-2016, 01:14 PM   #111
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Oh that's great, and of course mandatory transponders, especially for the children, won't somebody think of the children? You sure as fuck will when you're tied up in traffic because some kid(s) are playing fucking games. Ever watch a kid keep pushing the pedestrian button, like for an hour? And if the little bastard approaches the curb all the cars stop? How far from the curb? From which direction? Jr on a dead run down an alley or side street can run out into traffic in how many nanoseconds? Oh, and the cars will stop in zero feet? Science, bitches.

You're utopia where anyone can just walk out in the street without fear, will be a fucking nightmare. There is only one way to keep people from getting hit by vehicles, and that's to eliminate one or the other. Building utopia in any existing city is not possible. And don't give me crap about this or that city did this or that to make downtown more "pedestrian friendly". Oh, they closed off two of seven thousand streets, isn't that cute.

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One such factor is the perception of an impending danger. The driver of a passenger vehicle usually takes 1.5 seconds to perceive a dangerous situation and apply the brakes. This time is about the same for the average truck driver.

Weight
Another factor that impacts the time it takes for the vehicle to stop is the weight of the vehicle. Even though semi trucks have larger brakes than other vehicles, it usually takes the semi truck much longer to stop because of the much larger weight of the semi truck. Cars have an average weight of 5,000 pounds while a semi truck can weigh up to 80,000 pounds.

Therefore, a car takes about 124 feet to come to a stop when traveling at 40 miles per hour from the time that the driver perceives the danger. In comparison, a truck driver takes approximately 169 feet from the danger perception time when traveling at the same speed.

Speed
A critical component of calculating stop times is to know the speed that the vehicle was traveling right before the accident. The faster the vehicle is traveling, the longer it will take to come to a complete stop. In comparison to the figures noted above, a passenger vehicle will take about 316 feet from the awareness point when traveling 65 miles per hour. The semi truck takes about 525 feet before coming to a complete stop.
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So with your magic braking system cutting the 1.5 seconds reaction time to near zero(which I doubt unless your brakes are going to lock up the moment it senses there might be a danger), at 65 mph you start stopping 140ish feet sooner. It still takes 316/525 feet to stop, IF it's perfect traction, perfect mechanical condition, and the acquired target isn't too smart.

Some truck driver jerking off on a smartphone? It doesn't matter what speed he's going. No technology will make that fool safe on the road.
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Old 05-27-2016, 01:24 PM   #112
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LOL

Yeah. Don't blame me. It's the way the technology is going. If all cars are computer controlled, there is no reason for traffic signals except pedestrians. Pedestrians have a right to cross the street, so you have to find a technological solution.

Look at it this way, you wait for every red light for no reason, or you wait for an occasional pedestrian and have only green lights the rest of the time.

Doesn't matter anyway, you'll be letting the car drive, and you'll just be posting to the cellar. They are going to ban human driven cars eventually.
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Old 05-27-2016, 02:21 PM   #113
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Originally Posted by xoxoxoBruce View Post
You're utopia...
And don't call me Utopia.
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Old 05-27-2016, 02:49 PM   #114
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Hey, we evolved from horse & buggies, to trains, to cars, to planes, to jets. Every advantage is always used, and every big danger, we figure out and are carefully taught. It's not like day one we have nothing, and then day two our worst fears spring to life. But the evolution happens pretty quickly when it needs to, when there's a big advantage.

we're adults, we got this

D'ya ever think about the *crazy* amount of information in your head just about transportation signals alone? Colors of signs, shapes of signs, colors of lines, numbers of lines, colors of lights, placement of lights, implied limits, real limits; everything in our world is oriented around this one system. We spend years learning it.
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Old 05-27-2016, 02:55 PM   #115
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And, then, BAM!, flying cars.
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Old 05-27-2016, 05:09 PM   #116
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Originally Posted by glatt View Post
Yeah. Don't blame me. It's the way the technology is going.
No, it's what urban nerds and control freaks are thinking. It's against the laws of nature, stupid people should die... without reproducing.
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If allcars are computer controlled, there is no reason for traffic signals except pedestrians.
Ever hear of cross streets? Why bother with cars when mass transportation does the same thing? Oh, that's right, that's not feasible for 90% of the country.
Are you going to have traffic interweave? Fine, let the hoofers weave too, or take the pedestrian bridge. Although they're probably not smart enough to use it, or won't look up from their phone long enough to see it.

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Originally Posted by Undertoad View Post
Hey, we evolved from horse & buggies, to trains, to cars, to planes, to jets. Every advantage is always used, and every big danger, we figure out and are carefully taught. It's not like day one we have nothing, and then day two our worst fears spring to life. But the evolution happens pretty quickly when it needs to, when there's a big advantage.
You do realize there are a lot of people in this country who have never seen a jet plane on the ground, don't you?
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we're adults, we got this
We're adults, we don't want or need this.
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D'ya ever think about the *crazy* amount of information in your head just about transportation signals alone? Colors of signs, shapes of signs, colors of lines, numbers of lines, colors of lights, placement of lights, implied limits, real limits; everything in our world is oriented around this one system. We spend years learning it.
It's obvious some NEVER ever learn it. But the sum total is a drop in the bucket compared to the useless shit you've cataloged, indexed and stuffed in your noggin, instead of stuff that could save your life.

What does a flashing yellow light mean?
Slow down.
What... does... a... flashing... yellow... light... mean?
Slow down.
What... does..... a...... flashing...... yellow....... light....... mean?

Now there's something that might save my life someday.
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Old 06-02-2016, 12:17 AM   #117
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Texas...




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Old 06-02-2016, 07:36 AM   #118
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I'm going to be on that exact stretch of road Saturday morning.


Looks like a minivan cut off a semi, which rear-ended it, but it was pulling a ramped, empty bed, so when the semi behind that rear-ended the first semi, it went flying through the air like a Dukes of Hazzard episode.
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Old 06-02-2016, 07:44 AM   #119
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Exactly, and by the skid marks he wasn't on the brakes long before impact.
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Old 06-02-2016, 08:16 AM   #120
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And the lesson I take away from this is that the red truck filming the whole thing was at a nice safe following distance, so he/she had plenty of time to avoid the whole mess.

High speed traffic without the appropriate following distance is just one idiot away from a disaster. Moron does something stupid and there is no room for the other drivers to avoid.

Idiots shouldn't be. But that's never gonna happen.

So when traffic gets more dense, it needs to slow down so the smaller following distances are appropriate for the speed.

edit: Our red truck is 4 seconds behind the burning truck. 3 seconds should be the minimum, but 4 seconds is even better.
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