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hobbesmaster posted:Perhaps some sort of mechanic coupling between the vehicles on this grade separated track would be best? Trains are old and busted. Tubes are the future. https://www.youtube.com/watch?v=As0ai0Ygwt4
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Mar 22, 2018 23:20
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haveblue posted:Even if you do put up physical barriers and network everything, what happens when the car six inches in front of you has a mechanical failure that suddenly cuts its speed? Keeping the cars that close together would defeat a lot of the safety advantages of an automated and networked system. It would make more sense for the cars to calculate safe following distances and maintain that automatically. A 'safe' following distance could hypothetically be less than would be appropriate for a human driver, since the car could in theory react more quickly, but it would still be kind of foolish to not leave enough space between cars to allow for safe evasion if a car does break down or something. hobbesmaster posted:Perhaps some sort of mechanic coupling between the vehicles on this grade separated track would be best? I know this is a joke, but I'm actually intrigued by the idea of 'dynamic' trains, comprised of automated cars, where cars that are travelling along the same route physically link themselves together for better aerodynamics. Cars would join the train when they enter the roadway and drop out again when nearing their exit. You'd still have to manage spacing between the train and everything around it, but that would be a simpler problem than managing all those vehicles individually, and with the right design you could probably get a good efficiency boost as well.
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Mar 22, 2018 23:21
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Facebook Aunt posted:Trains are old and busted. Tubes are the future. The second decree: no more pollution, no more car exhaust. OR OCEAN DUMPAGE. From now on, people travel in tubes!
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Mar 22, 2018 23:22
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Bombadilillo posted:Chainsaw chaps are standard safety gear. The work very well. As long as you don’t use an electric chainsaw. Those have enough low-end torque to chew right through the chaps.
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Mar 22, 2018 23:22
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Main Paineframe posted:This isn't actually true, it was dreamed up by AI fanboys who gave absolutely zero thought to practical considerations. Even if every single car is networked and warning each other in advance of any planned movement, the laws of physics still put significant constraints on the cars' ability to react to unplanned movements. Unless you're placing physical barriers around literally every road, it's dangerous to assume that everything that will ever be on the road is networked. this scenario strongly resembles basically trains, which already exist, except you are in your own personal little train car and dont have to interact with anyone else and also don't have to walk very far to go from the train car to your destination. it's a decades-away fantasy and is impossible with current technology a huge amount of what people say about self driving cars is just a way to rationalize the benefit of cars without any of the drawbacks. try looking at self driving car advocacy through this lens - what if i could have a car with all of the upsides, but none of the downsides? boner confessor fucked around with this message at 23:25 on Mar 22, 2018 |
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Mar 22, 2018 23:23
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Facebook Aunt posted:Trains are old and busted. Tubes are the future. It'd be kinda nice if you could get up and walk around while in the tube. Maybe something like this? 
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Mar 22, 2018 23:24
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boner confessor posted:this scenario strongly resembles basically trains, which already exist, except you are in your own personal little train car and dont have to interact with anyone else and also don't have to walk very far to go from the train car to your destination. it's a decades-away fantasy and is impossible with current technology You sound like a really fun person to be around with your nose so planted in the now, never letting yourself get distracted looking at the future.
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Mar 22, 2018 23:25
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Booley posted:You sound like a really fun person to be around with your nose so planted in the now, never letting yourself get distracted looking at the future. yeah i know reality is a downer sometimes but that's not my fault bro
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Mar 22, 2018 23:28
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or we just skip all that and have all the jobs that make you sit in a box working on a computer from 9-5 be doable from a remote location naaaaah
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Mar 22, 2018 23:28
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hobbesmaster posted:It'd be kinda nice if you could get up and walk around while in the tube. Maybe something like this? You could even create a nice story to pitch it with.
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Mar 22, 2018 23:36
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MF_James posted:Here's a good tip: Don't cut off your loving thumb. "I didn't choose the thumb knife, the thumb knife chose me"
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Mar 23, 2018 00:17
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Oops there was a power line up there
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Mar 23, 2018 00:39
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Slender Man wasn't the same after they shot out his knees in Korea....
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Mar 23, 2018 01:06
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Not what I expected from the Space Jam sequel, but color me interested
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Mar 23, 2018 02:04
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There wasn't even a good reason... August 21, 2008 "Philadelphia Sn 28 was raising the lower boom to get the bucket closer to the ground so two costumed mascots could enter. They were going to ride the truck in the bucket to the National Nite Out festivities several blocks up the road. The knuckle of the waterway made several contacts with the high voltage lines and then got stuck to them. The result is in JD’s photo. And no one was injured except for some bruised egos."
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Mar 23, 2018 02:09
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Gunshow Poophole posted:The second decree: no more pollution, no more car exhaust. OR OCEAN DUMPAGE. From now on, people travel in tubes! DIdn’t want to let this go by unnoticed like those fuckers at City Hall want.
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Mar 23, 2018 02:15
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a sexual elk posted:I just started as a longshoreman at the Los Angeles/ Long Beach ports, what you got for me OSHA thread? Ask not what the OSHA thread can do for you, ask what you can do for the OSHA thread. 
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Mar 23, 2018 02:38
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Pigsfeet on Rye posted:There wasn't even a good reason... Just a reminder if you are ever in a situation where you’re near something like this the ground itself can have a dangerous voltage gradient expanding out from the point of contact. This depends on the conditions of the earth itself (soil) and the voltage of the line.
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Mar 23, 2018 02:50
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"But zooming out from the specifics of Herzberg's crash, the more fundamental point is this: conventional car crashes killed 37,461 in the United States in 2016, which works out to 1.18 deaths per 100 million miles driven. Uber announced that it had driven 2 million miles by December 2017 and is probably up to around 3 million miles today. If you do the math, that means that Uber's cars have killed people at roughly 25 times the rate of a typical human-driven car in the United States. Of course, with a sample size of one, this doesn't tell us very much, statistically speaking, about the safety of Uber's vehicles in the future. It's possible that Uber just got exceptionally unlucky. But it seems more likely that, even with the safety driver, Uber's self-driving cars are way more dangerous than a car driven by the average human driver." I'm not sure I follow this logic. He starts by saying a sample size of 1 offers no real statistically reliable data for an event that has a probability of 1 in milliions of occurring. Then suddenly abandons that idea and states it seems like Uber is way more dangerous. If you roll a 100 million sided dice, and after 20 million rolls you got two 1's you can't really conclude that 1 is weighted to occur substantially more often than any other number.
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Mar 23, 2018 03:32
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Read the rest of the article below that part.
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Mar 23, 2018 03:35
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E: Directed one above previous. Or we can conclude that Uber's LIDAR and/or the backing software package is a giant pile of poo poo because it didn't pick up a loving person pushing a bike in basically the best possible test case for said package. I'm inclined to agree with the Uber culture explanation upthread.
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Mar 23, 2018 03:39
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The point the Ars article was going for is that even when they're legally in the right, the Uber cars drive dangerously because they drive to the letter of the law.
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Mar 23, 2018 03:43
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My favorite part of this is the audience reactions; ranging from 'polite yet bored interest, I came all the way down here after all...' to 'physical pain from the noise' and 'nearly vomiting from the smell'.
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Mar 23, 2018 03:53
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GotLag posted:The point the Ars article was going for is that even when they're legally in the right, the Uber cars drive dangerously because they drive to the letter of the law. Granted Arizona is basically a hellscape of deserts and olds so maybe this is correct in retirementville, but I'm pretty sure you're not allowed to straight run over a motherfucker because they jaywalked in real states. LIDAR does not care about daylight so this can be called broad daylight. Basically line all Uber execs against the wall.
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Mar 23, 2018 04:27
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Main Paineframe posted:This isn't actually true, it was dreamed up by AI fanboys who gave absolutely zero thought to practical considerations. Even if every single car is networked and warning each other in advance of any planned movement, the laws of physics still put significant constraints on the cars' ability to react to unplanned movements. Unless you're placing physical barriers around literally every road, it's dangerous to assume that everything that will ever be on the road is networked. what if everyone hit the gas at the same time that would fix this traffic jam
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Mar 23, 2018 04:36
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Arizona, not at all coincidentally, has one of the highest pedestrian death rates in the country. While this was definitely a failure of Uber's technology, the more glaring issue is the negligence when it comes to road design. Long gaps between pedestrian crossings, poor grade separation around pedestrian crossings, not placing pedestrian crossings at locations where people are include to cross, poor traffic calming around pedestrian crossings (marked and unmarked!) - you could go on for a while about the design flaws in most of the roads in Arizona. Compare that to other local governments that are designing with those factors in mind and have significantly lower death rates among pedestrians. In the OSHA thread of all places it should be obvious that accidents, differences in accident rates, and the severity of those accidents are usually more attributable to negligence in the design of systems and processes rather than the decisions (autonomous or otherwise) made within those systems.
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Mar 23, 2018 04:40
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E: Sorry, directly above was a good rear end post that I cheapened. E2 for penance/content: Someone way upthread said that AZ streets are basically laid out on 1mi x 1mi grids with no crossings in between, was that an exaggeration or do you literally have to walk ~1/2mi to the nearest crosswalk, wait what I assume to be a long-rear end time, then walk ~1/2mi back to cross the road? If so, loving no poo poo people are jaywalking. goatsestretchgoals fucked around with this message at 04:47 on Mar 23, 2018 |
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Mar 23, 2018 04:42
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AreWeDrunkYet posted:Arizona, not at all coincidentally, has one of the highest pedestrian death rates in the country. While this was definitely a failure of Uber's technology, the more glaring issue is the negligence when it comes to road design. Long gaps between pedestrian crossings, poor grade separation around pedestrian crossings, not placing pedestrian crossings at locations where people are include to cross, poor traffic calming around pedestrian crossings (marked and unmarked!) - you could go on for a while about the design flaws in most of the roads in Arizona. Compare that to other local governments that are designing with those factors in mind and have significantly lower death rates among pedestrians. in traffic engineering we prefer to call them “crashes” because “accidents” makes them sound unpreventable, allowing negligent-rear end design like what’s found throughout arizona to be absolved from blame i don’t know how it works in arizona, but in louisiana it’s not uncommon to see lawsuits from victims or their families include the last engineering firm to touch the site and the municipality who approved the work for crashes like this where the design could even tangentially be a factor, which they’d be absolutely right to do so here though i wonder if the arizona public engineers that’re supposed to be checking this kinda work are just incompetent or if their state dotd’s design requirements are entirely poo
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Mar 23, 2018 05:03
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H.P. Hovercraft posted:in traffic engineering we prefer to call them “crashes” because “accidents” makes them sound unpreventable, allowing negligent-rear end design like what’s found throughout arizona to be absolved from blame https://www.youtube.com/watch?v=puK5CwThaq4
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Mar 23, 2018 05:10
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Delivery McGee posted:Edit: Wanna fly out to LA and get a '96 Buick Roadmaster wagon cheap, add whaleskin hubcaps and a fuel cell in the back that could serve as a swimming pool for children, and try to beat Alex Roy. Because the stops for refueling seem to be the part that slows you down, if you do 85 all the way without having to stop for gas as much, it's as good as doing 175 and stopping for gas every two hours.. So get a gas tank to fill the cargo space of a station wagon. It gets maybe 15mpg flat out, and still has a queen-size bed for the codriver. If you fill all 92.4 ft³ of the cargo area with gas, you only need to get ~4.15 mpg to make it without refueling. The two tons of gas(4442 lbs) might slow you down a bit though. However, if you can get 15mpg at whatever speed you're running, you'd only need ~170 additional gallons, which could be built into a tank the size of a queen bed that would only need to be ~8.2" deep. Tumble posted:It's gonna be super funny when the next person to set the record does it in a hybrid Camry. This might be the winning strategy if you're filling the thing with gas though. According to some random forum the Prius gets ~38mpg at 90mph, Take off another 10 for traveling at 100mph, and you only need an extra 90 gallons/550 lbs of gasoline. With either strategy, no stops are required, but probably a good idea for switching drivers/etc otherwise. However, with the average speed of 99mph, going to be hard to maintain even without stops. Despite the high speeds, the average speed while moving was still only 103mph. If you take roughly the same amount of time as Ed to navigate the endpoints, (21 minutes until he hit 80mph first out of NYC in 5 miles, and 11 minutes from 85mph to the end, covering 8 miles) you have to maintain 100.73 mph across the entire country(to tie). Any time you spend below, an equivalent time must be spent above your target. Hope you don't have to pump the brakes for cops!
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Mar 23, 2018 05:24
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Sigourney Cheevos posted:If you fill all 92.4 ft³ of the cargo area with gas, you only need to get ~4.15 mpg to make it without refueling. The two tons of gas(4442 lbs) might slow you down a bit though. However, if you can get 15mpg at whatever speed you're running, you'd only need ~170 additional gallons, which could be built into a tank the size of a queen bed that would only need to be ~8.2" deep. A big part of the Prius' (and related) mileage is regenerative braking. If you're doing a hypermile cannonball run, I imagine you aren't hitting the brakes all that often.
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Mar 23, 2018 05:49
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Gunshow Poophole posted:The second decree: no more pollution, no more car exhaust. OR OCEAN DUMPAGE. From now on, people travel in tubes!
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Mar 23, 2018 05:54
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♫Tube technology!♫
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Mar 23, 2018 06:36
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goatsestretchgoals posted:A big part of the Prius' (and related) mileage is regenerative braking. If you're doing a hypermile cannonball run, I imagine you aren't hitting the brakes all that often. Prius does fine on the highway, with cruise control on. It’s slippery and it has a small engine that’s working not far from its efficiency peak. But go much above the speed limit and fuel economy takes a nosedive. Wind resistance hurts and the engine is pushed farther from that peak. I’d bet you’d still get in the twenties at 100 mph, though. Being governed to go no more than 112 mph is probably a bigger problem.
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Mar 23, 2018 06:38
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Previa_fun posted:♫Tube technology!♫ Is there a chance the tube may bend?
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Mar 23, 2018 06:42
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Snowglobe of Doom posted:Is there a chance the tube may bend? And will there be a series of them?
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Mar 23, 2018 06:59
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haha you people have such a loving boner for AI cars your ego won't let you admit that people are rightfully afraid of them (like when they kill people). Let it go, theres way more important things. The tech is young, and it will continue to be young for a very long time. It doesn't need your breathless defense edit: for the record I think human drivers are poo poo and they don't deserve cars, but guess what, those same humans are bending over backwards to be first to market with a self driving car and they are all fuckups Jokerpilled Drudge fucked around with this message at 07:27 on Mar 23, 2018 |
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Mar 23, 2018 07:25
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On the topic of Arizona, I loving HATE the traffic control that they do for work zones. Most other places I've been use orange barrels for lane closures/detours major road projects. They have a couple of advantages - they're nice and wide so not only do they stand out visually on their own, they also occlude and obscure anything behind them that a smaller object might blend into. Arizona, on the other hand, just uses loving assloads of narrow plastic delineators. Coming up on a work zone can be like trying to drive into a forest of orange and hoping you guess correctly where the lane is supposed to be. They do put signs on top of them every so often but they can be confusing. On the left side of the lane, they put a "KEEP RIGHT" sign with a horizontal arrow and vice-versa for the right, although I've seen it where they're not directly across from each other. Also the whole sign is only maybe a foot high with like 3" lettering and you have to shift focus onto them from the actual roadway/work site for an extra second to figure out what the heck they mean sometimes. Also pretty much every project uses a third-party contractor for their traffic control, and they don't seem to care about conforming to MUTCD for a lot of poo poo. I have a flagger card/have done a lot of work in the ROW and that poo poo would make me nervous. And that's without thinking about the possibility that some prototype autonomous vehicle could plow through the job site while the test driver is watching Netflix.
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Mar 23, 2018 07:36
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Snowglobe of Doom posted:Is there a chance the tube may bend? Not on your life my snowglobe friend.
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Mar 23, 2018 07:36
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Gunshow Poophole posted:The second decree: no more pollution, no more car exhaust. OR OCEAN DUMPAGE. From now on, people travel in tubes! Previa_fun posted:♫Tube technology!♫ I will poison both your wines for this
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Mar 23, 2018 08:11
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