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Comment Re:Isn't that good news? (Score 1) 257

You have causality backwards. Cities are becoming denser (though still not as dense as they were pre-WW2) because cities are where the jobs are.

Not really. It's a death spiral: more density makes cities more attractive for employers, as it offloads the externalities onto employees. This in turn attracts more people. This in turn attracts more employers, etc.

Exactly the same reason we had pollution before the environmental regulations.

You can't commute from rural Iowa to a waitress job opening in Dallas.

But a remote job in Iowa will support a local restaurant that will employ the waitress.

Comment Re:Isn't that good news? (Score 1) 257

But in general it does not. Busses from the same line come every 5 or 10 minutes, same for trains.

10 minutes interval means that you're waiting on average 5 minutes. Then add time to get from the taxi stop to the train and back. Also, that's the _best_ case scenario with a very high frequency line.

And on most roads, for pretty long distances most lines share the same route. So you just hop into a "random" bus, which pops up every minute.

And this only works if you live directly on the "trunk" line. If you have to wait for a particular bus, it will kill the average commute time. And most people, by definition, don't live on trunk lines. Otherwise, we'd be all living in that Saudi linear town.

Comment Re:Isn't that good news? (Score 2) 257

No. It doesn't assume anything different, just a stream of cars travelling at regular speeds and keeping regular distances.

Classic transit has an unavoidable tension: stops kill the average speed, but placing the stops further apart increases the time it takes people to get to them. Taxis don't have this tension, they can provide door-to-door transport.

Comment Re:Isn't that good news? (Score 1) 257

I think the delay between trains will have to be close to 1 minute, not 15-20.

That's just flatly impossible (on average). The fastest train frequency is in the Moscow Metro, 90 seconds between trains sustained over several hours. And this requires extremely careful choreography, that can't work in less controlled environments. NYC subway averages at 5 minutes during the rush hours and 12 minutes during off-peak hours.

It is quite possible we are going to have 100% self-driving taxi transportation in the future, but it is interesting the imagine a scheme that might be preferred by a significant number of travelers.

Self-driving is really a game-changer for city planning, but somehow it's completely overlooked by the mainstream planners. I think it's mostly because self-driving will make most of the transit development unnecessary.

Comment Re:Isn't that good news? (Score 1) 257

However, it's not a panacea because it only addresses the needs of those desire or at least are willing to live in less dense places and willing to accept the economics, geography, politics, and societal effects of those places

Sure. I'm not saying to nuke all the cities, some people will always want to live in dense areas. However, _most_ people (80+%) prefer to live in sparse areas. Around 15% of the total population would prefer to live in sparse communities, but they can't do that because of employment. If these people are provided with an opportunity to move out, this will drastically lower the pressure on the dense housing market.

Comment Re:Cities aren't growing [Re:Isn't that good news? (Score 1) 257

I'd call that "not growing."

The share is the same, but their _population_ is growing. And the rural areas reduced in percentage.

First, that's the very definition of suburbs: suburbs are located near cities. Second, your statement was "Cities became a black hole of density, making more and more people to move into ever denser conditions."

"Suburb (n): an outlying part of a city or town". And yes, I stand by my statement.

Your statement was "Promote suburbs and exurbs."

Correct. Suburbs _also_ have an internal pressure to densify and turn into mini-cities. Vancouver, CA is a great example, its inner city is metastasizing in dense clusters near subway stations, in areas that were suburbs before.

Comment Re:Isn't that good news? (Score 1) 257

"Taxi" is just not a good word for this transportation mode. It's more like airport shuttles that drive around and pick up people. The other major difference is the cost, self-driving taxis can be _cheaper_ than buses. Splitting a taxi when paying $40 for a ride? That's terrible. Splitting a taxi when you're paying $5? Yeah, whatever.

Self-driving taxis could concentrate a large crowd to a "shared" location (let's call it a "train station"), without being "shared" themselves, I really don't think people will use a "shared" vehicle without this.

Just doing one transit hop can easily add 15-20 minutes to your commute. It can be viable in some cases.

Comment Re:Yes. Obviously. (Score 1) 117

That sounds unlikely.

GHA average commute is 26 minutes. Berlin is 32 minutes, London is 45 minutes.

Busses vary depending on how much cities like to prioritize the convenience of a single occupancy vehicle over a 100 person bus.

The average bus occupancy is 15 people in the US.

Plus you know trains are faster than cars. Let's say you're going from London to Slough (which is just outside the M25, but pretty much continuous urbaness all the way. That train hits 125mph, and doesn't get stuck in traffic. The 25 mile journey takes 17 minutes.

You forgot to account for the transit time (walking to/from the station) and waiting for the train. Buses also have shitty average speed due to the need for constant stops. And if you space bus stations further, people have to walk longer, negating the time savings from sparser stops.

Cars are the great equalizer to those that can afford them and legally drive them. For everyone else, they are the great divider. Plus the US is weirdly bad at public transport.

EVERY country is bad at transit. It sucks universally. And yes, cars don't work for alcoholics, children, and disabled people. This problem is solved by self-driving taxis.

Comment Re:Cities aren't growing [Re:Isn't that good news? (Score 4, Informative) 257

It doesn't conflict with what I said. Rural counties are declining (as your article says), and cities are growing. The suburbs that are growing are mostly located near the cities, and the growth is driven by the cities. Suburbs just become "extended city cores" in essence. The core cities themselves also grow.

The overall stats are also misleading, you need to break them down by city size. It's really bi-modal, smaller cities are stagnant, larger cities are growing.

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