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#111
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DRIVERLESS ELECTRIC CARS
Per John B.:
I don't know whether you remember Uncle Tom McCahill's articles in Mechanics Illustrated but he wrote an article about speed on trips. He drove a car coast to coast and return. One way he drove as fast as possible and on the return he drove at the legal posted speed. The difference was measured in hours. I get to do something like this when I carry my 20' surfski down to the Jersey shore on my roof racks. It's so long that I worry about windage, so I keep to the speed limit: 65. Normally, I make the drive at traffic speed - which is 72-73 in the right lane and 75+ in the left lane. Time diffs I have observed have all bee less than five minutes for an 80+ mile run. In a similar vein, I drove down to Florida with my college roommate one spring break - in his car. He was driving *really* fast - as in 90+ mph.... We would pass these big 18-wheelers with the sleeping cabs doing 55 mph. But at the next gas stop, we'd be standing there filling up the tank and see same those same rigs just chugging on by... -- Pete Cresswell |
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#112
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DRIVERLESS ELECTRIC CARS
On Thu, 12 Oct 2017 09:09:32 -0700, Jeff Liebermann
wrote: On Thu, 12 Oct 2017 11:37:08 +0100, Steffo wrote: I read an interesting article that sooner or later we will not only use driveless cars as means of transportation, but also 70% of people will prefer to live in driveless homes http://tinyurl.com/yangl6pa rather than buy expensive condos/houses. Yep. If it moves, is road legal, and can be computerized, it can be automated to drive itself. Just keep the mobile home moving so that it never needs to find a parking space. Progress blunders onward. Just one problem. The road infrastructure that the US built during the 1930's depression, and again during the cold war, is falling apart. Roads are designed to last about 25 years and bridges about 50 years. The better built freeways, maybe also 50 years. The whole concept of driverless cars assumes the existence and maintenance of smooth, clean, pot hole free, and safe highways. By the time driverless cars are perfected and the Luddites have been exterminated, the cost of replacing and repairing the highways will probably reach the crisis point. The car of the future might just be a 4x4 with an articulated suspension, designed to make it's way over the rubble that was once our freeway and highway system. And given the (would one say "normal"?) population growth in the U.S. the roads will be long parking lots :-) -- Cheers, John B. |
#113
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DRIVERLESS ELECTRIC CARS
13 hours is abt 75...not counting gas stops
Cruise at 100+ Skip Ohio ? |
#114
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DRIVERLESS ELECTRIC CARS
On Thursday, October 12, 2017 at 5:26:13 PM UTC-7, John B. wrote:
On Thu, 12 Oct 2017 09:09:32 -0700, Jeff Liebermann wrote: On Thu, 12 Oct 2017 11:37:08 +0100, Steffo wrote: I read an interesting article that sooner or later we will not only use driveless cars as means of transportation, but also 70% of people will prefer to live in driveless homes http://tinyurl.com/yangl6pa rather than buy expensive condos/houses. Yep. If it moves, is road legal, and can be computerized, it can be automated to drive itself. Just keep the mobile home moving so that it never needs to find a parking space. Progress blunders onward. Just one problem. The road infrastructure that the US built during the 1930's depression, and again during the cold war, is falling apart. Roads are designed to last about 25 years and bridges about 50 years. The better built freeways, maybe also 50 years. The whole concept of driverless cars assumes the existence and maintenance of smooth, clean, pot hole free, and safe highways. By the time driverless cars are perfected and the Luddites have been exterminated, the cost of replacing and repairing the highways will probably reach the crisis point. The car of the future might just be a 4x4 with an articulated suspension, designed to make it's way over the rubble that was once our freeway and highway system. And given the (would one say "normal"?) population growth in the U.S. the roads will be long parking lots :-) And apart from the number of cars, the number of delivery trucks is skyrocketing because of e-commerce. https://www.citylab.com/transportati...e-boom/523671/ Truck traffic on the interstates is staggering. I don't know if it is due to the the collapse of the railroads, population increase, e-commerce or all of the above. There are way too many trucks on the highways. Cargo needs to be moved more efficiently. I had to run a car errand yesterday -- about two miles across downtown to an area of mixed business and high density housing. I could have ridden my bike the same distance five times in the time it took me to get there in a car. Incroyable. It is long past the time to move -- but I don't know where.. -- Jay Beattie. |
#115
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DRIVERLESS ELECTRIC CARS
On Thursday, October 12, 2017 at 11:08:04 AM UTC-7, Doug Landau wrote:
On Thursday, October 12, 2017 at 9:09:36 AM UTC-7, Jeff Liebermann wrote: On Thu, 12 Oct 2017 11:37:08 +0100, Steffo wrote: I read an interesting article that sooner or later we will not only use driveless cars as means of transportation, but also 70% of people will prefer to live in driveless homes http://tinyurl.com/yangl6pa rather than buy expensive condos/houses. Yep. If it moves, is road legal, and can be computerized, it can be automated to drive itself. Just keep the mobile home moving so that it never needs to find a parking space. Progress blunders onward. Just one problem. The road infrastructure that the US built during the 1930's depression, and again during the cold war, is falling apart. Roads are designed to last about 25 years and bridges about 50 years. The better built freeways, maybe also 50 years. ? These things change all the time Caltrans is out there every day widening said freeways and so on Oddly enough, while the freeway systems are being expanded the city road systems are being reduced to reduce wear and dangerous speeding. This all instead of enforcing driving laws. |
#116
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DRIVERLESS ELECTRIC CARS
On Friday, October 13, 2017 at 7:06:17 AM UTC-7, jbeattie wrote:
On Thursday, October 12, 2017 at 5:26:13 PM UTC-7, John B. wrote: On Thu, 12 Oct 2017 09:09:32 -0700, Jeff Liebermann wrote: On Thu, 12 Oct 2017 11:37:08 +0100, Steffo wrote: I read an interesting article that sooner or later we will not only use driveless cars as means of transportation, but also 70% of people will prefer to live in driveless homes http://tinyurl.com/yangl6pa rather than buy expensive condos/houses. Yep. If it moves, is road legal, and can be computerized, it can be automated to drive itself. Just keep the mobile home moving so that it never needs to find a parking space. Progress blunders onward. Just one problem. The road infrastructure that the US built during the 1930's depression, and again during the cold war, is falling apart. Roads are designed to last about 25 years and bridges about 50 years. The better built freeways, maybe also 50 years. The whole concept of driverless cars assumes the existence and maintenance of smooth, clean, pot hole free, and safe highways. By the time driverless cars are perfected and the Luddites have been exterminated, the cost of replacing and repairing the highways will probably reach the crisis point. The car of the future might just be a 4x4 with an articulated suspension, designed to make it's way over the rubble that was once our freeway and highway system. And given the (would one say "normal"?) population growth in the U.S. the roads will be long parking lots :-) And apart from the number of cars, the number of delivery trucks is skyrocketing because of e-commerce. https://www.citylab.com/transportati...e-boom/523671/ Truck traffic on the interstates is staggering. I don't know if it is due to the the collapse of the railroads, population increase, e-commerce or all of the above. There are way too many trucks on the highways. Cargo needs to be moved more efficiently. I had to run a car errand yesterday -- about two miles across downtown to an area of mixed business and high density housing. I could have ridden my bike the same distance five times in the time it took me to get there in a car. Incroyable. It is long past the time to move -- but I don't know where. I don't know about that Jay - as one that buys a LOT on-line USPS carries and delivers most of it. I think in all of the stuff I've bought to recondition a Pinarello frame and fork only one item came on a UPS - and that was from Germany. |
#117
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DRIVERLESS ELECTRIC CARS
idea the auto industry.....mainly overseas auto industry ....would move en mass is amazing and frightening but we all know the latter so ?
goo.gl/ZnhNas |
#118
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DRIVERLESS ELECTRIC CARS
On Thu, 12 Oct 2017 11:08:02 -0700 (PDT), Doug Landau
wrote: On Thursday, October 12, 2017 at 9:09:36 AM UTC-7, Jeff Liebermann wrote: On Thu, 12 Oct 2017 11:37:08 +0100, Steffo wrote: I read an interesting article that sooner or later we will not only use driveless cars as means of transportation, but also 70% of people will prefer to live in driveless homes http://tinyurl.com/yangl6pa rather than buy expensive condos/houses. Yep. If it moves, is road legal, and can be computerized, it can be automated to drive itself. Just keep the mobile home moving so that it never needs to find a parking space. Progress blunders onward. Just one problem. The road infrastructure that the US built during the 1930's depression, and again during the cold war, is falling apart. Roads are designed to last about 25 years and bridges about 50 years. The better built freeways, maybe also 50 years. ? These things change all the time What things change? The lifetime of roads and freeways? http://www.concocompanies.com/services/acme-trucking/green-building-techniques/concrete-paving/ "A Federal Highway Administration report ("Service Lives of Highway Pavements," Public Roads, August 1971) gives the average surface life of concrete roads as 25 years and asphalt as 15 years. For city pavements, the vast number of 30 to 50-year-old concrete streets readily attests to their performance beyond the study figure of 25 years, while most asphalt streets would be hard pressed to last for 15 years. Some randome Googling seems to indicate that the numbers haven't change in the last 45 years from the aformentioned report. Caltrans is out there every day widening said freeways and so on I haven't seen much in the way of major projects. Adding lanes has certainly helped relieve congestion, but it would take a huge amount of continuous widening to keep up with the increases in traffic. The whole concept of driverless cars assumes the existence and maintenance of smooth, clean, pot hole free, and safe highways. Says who? Me. Watch the videos of the first DARPA autonomous car challenge and tell me if you would consider riding in one of the off road test cars. https://www.youtube.com/watch?v=7a6GrKqOxeU 5 out of 23 managed to finish. Terrain turned out to be a big problem, so the next challenge was held in an urban environment on good quality roads. https://www.youtube.com/watch?v=-xibwwNVLgg They already face a number of similar problems such as lanes, turns, intersections, and traffic. Why should potholes and surface smoothness be any different or unsolvable? It's much easier to predict what a vehicle will do on a flat road, than which direction it will bounce or fly after hitting a pot hole. By the time driverless cars are perfected and the Luddites have been exterminated, the cost of replacing and repairing the highways will probably reach the crisis point. The car of the future might just be a 4x4 with an articulated suspension, designed to make it's way over the rubble that was once our freeway and highway system. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#119
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DRIVERLESS ELECTRIC CARS
On Friday, October 13, 2017 at 9:02:19 PM UTC-7, Jeff Liebermann wrote:
On Thu, 12 Oct 2017 11:08:02 -0700 (PDT), Doug Landau On Thursday, October 12, 2017 at 9:09:36 AM UTC-7, Jeff Liebermann wrote: On Thu, 12 Oct 2017 11:37:08 +0100, Steffo wrote: I read an interesting article that sooner or later we will not only use driveless cars as means of transportation, but also 70% of people will prefer to live in driveless homes http://tinyurl.com/yangl6pa rather than buy expensive condos/houses. Yep. If it moves, is road legal, and can be computerized, it can be automated to drive itself. Just keep the mobile home moving so that it never needs to find a parking space. Progress blunders onward. Just one problem. The road infrastructure that the US built during the 1930's depression, and again during the cold war, is falling apart. Roads are designed to last about 25 years and bridges about 50 years. The better built freeways, maybe also 50 years. ? These things change all the time What things change? The lifetime of roads and freeways? No, the roads themselves. Not where you live. But when I came back from coleg 237 was one lane in each direction with a stop sign at 1st street. It is now 12 lanes wide and 880 has gone from being 2 to 12 lanes. When I go back to visit where I went to skool there is a brand new freeway each time where there was nothing before. When I drive home I don't even recognize the 405 exit lane - it is now on the left not on the right!! I don't remember ever seeing a left-hand exit lane before that; pretty soon they were in NorCal too. When I moved here in 1972 they were building 280, and recently built 85. I would agree that nothing has changed in -your- neighborhood. |
#120
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DRIVERLESS ELECTRIC CARS
On Monday, October 16, 2017 at 9:26:00 AM UTC-7, Doug Landau wrote:
On Friday, October 13, 2017 at 9:02:19 PM UTC-7, Jeff Liebermann wrote: On Thu, 12 Oct 2017 11:08:02 -0700 (PDT), Doug Landau On Thursday, October 12, 2017 at 9:09:36 AM UTC-7, Jeff Liebermann wrote: On Thu, 12 Oct 2017 11:37:08 +0100, Steffo wrote: I read an interesting article that sooner or later we will not only use driveless cars as means of transportation, but also 70% of people will prefer to live in driveless homes http://tinyurl.com/yangl6pa rather than buy expensive condos/houses. Yep. If it moves, is road legal, and can be computerized, it can be automated to drive itself. Just keep the mobile home moving so that it never needs to find a parking space. Progress blunders onward. Just one problem. The road infrastructure that the US built during the 1930's depression, and again during the cold war, is falling apart. Roads are designed to last about 25 years and bridges about 50 years. The better built freeways, maybe also 50 years. ? These things change all the time What things change? The lifetime of roads and freeways? No, the roads themselves. Not where you live. But when I came back from coleg 237 was one lane in each direction with a stop sign at 1st street. It is now 12 lanes wide and 880 has gone from being 2 to 12 lanes. When I go back to visit where I went to skool there is a brand new freeway each time where there was nothing before. When I drive home I don't even recognize the 405 exit lane - it is now on the left not on the right!! I don't remember ever seeing a left-hand exit lane before that; pretty soon they were in NorCal too. When I moved here in 1972 they were building 280, and recently built 85. I would agree that nothing has changed in -your- neighborhood. You have to wonder what the hell is going on. 280 was wide open going south from Highway 92 most of the way to Sunnyvale just 5 years ago. That last couple of times I've gone to Palo Alto Medical Center it's taken me almost two hours from San Leandro. I can ride my bike there in an hour and a half. |
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