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Showing posts with label Train. Show all posts
Showing posts with label Train. Show all posts

Tuesday, May 13, 2025

Why Surface-Level Smart Public Transit Beats Tunnels and Air Taxis for Dense Cities





Why Surface-Level Smart Public Transit Beats Tunnels and Air Taxis for Dense Cities

In the race to solve urban mobility challenges, it's tempting to dream big: underground tunnels whizzing people beneath traffic, or air taxis zipping across the skyline. These futuristic visions dominate headlines, promising to "disrupt" how we move in cities. But let’s be clear—if the goal is to maximize traveler density per mile in already densely populated areas, the most efficient, scalable, and humane solution isn’t below or above—it’s right in front of us.

Surface-level smart public transportation is the answer.

The Tunnel Mirage

Elon Musk's tunnel concept, The Boring Company, proposes underground highways to bypass urban congestion. But beyond the significant engineering challenges and costs, there's a hidden toll: psychological discomfort. Being underground, often in confined vehicles with no natural light or orientation, is disorienting and stressful. Not everyone will choose that daily.

Moreover, tunnels are point-to-point, inflexible systems. Adding new stops or changing routes is almost impossible once infrastructure is built. And let’s not forget: underground spaces are inaccessible in emergencies, costly to maintain, and environmentally dubious when compared to surface alternatives.

Air Taxis: Fantasy in the Sky

Air taxis make for great science fiction and VC decks. But they come with loud noise, high energy use, intense safety requirements, and limited carrying capacity. The technology might mature, but it’s unlikely to ever serve more than a niche of high-income travelers.

Even if they become silent, safe, and semi-affordable, air space is limited, and the urban sky simply can’t scale to the density of footpaths, let alone roads or rail lines. They might be part of the mix, but they won't carry the bulk of a city's travelers.

The Smart Surface Revolution

What works is what already works—buses, trains, and taxis—but with a layer of intelligence.

Imagine a city where trains, buses, and last-mile shuttles (or even ride-hailing cabs) are seamlessly connected in a digital ecosystem. A traveler books a journey from Point A to Point B on one app, and behind the scenes, the system calculates the most efficient combo of transport modes. Your train, your connecting bus, your final mile tuk-tuk—all aware of each other’s location, capacity, and timing. No wait times. No gaps in the journey.

This is multi-modal transport, unified through AI and real-time data.

It offers:

  • High traveler density per mile at low marginal cost.

  • Psychological comfort—open skies, familiar environments, human scale.

  • Rapid scalability—you don’t need to dig or fly, just coordinate better.

  • Inclusivity—everyone, not just the wealthy, can afford and access it.

Conclusion: Futuristic Doesn’t Mean Floating

Cities don’t need to float in the sky or tunnel like moles to be efficient. The best systems are those that align with human behavior, economic reality, and existing infrastructure.

Yes, explore air taxis and tunnel tech. But don’t lose sight of the real future: a surface-level, intelligent, connected public transit network that feels as smooth as flying, without leaving the ground.

Urban mobility doesn’t need to reinvent physics—it just needs to talk to itself.




Wednesday, December 26, 2012

Fast Is Fast


China is ahead of America on clean energy, and China is ahead of America on fast trains. These high speed trains seem to compete with air travel, and I mean in terms of time taken, airport time included. That's fascinating.

I don't see why land acquisition is a problem. The value of land on both sides of the track goes up. Does that not pay for the loss of land?

World's Longest High-Speed Rail Line Opens in China
the world’s longest high-speed rail line, covering a distance in eight hours that is about equal to that from New York to Key West, Florida, or from London across Europe to Belgrade. .... 186 miles an hour ..... Guangzhou, the main metropolis in southeastern China. Older trains still in service on a parallel rail line take 21 hours; Amtrak trains from New York to Miami, a shorter distance, still take nearly 30 hours. ..... China has resumed rapid construction on one of the world’s largest and most ambitious infrastructure projects, a network of four north-south routes and four east-west routes that span the country. ..... the national network has helped reduce toxic air pollution in Chinese cities and curb demand for imported diesel fuel, by freeing up a lot of capacity on older rail lines for goods to be carried by freight trains instead of heavily polluting, costlier trucks ..... Debt to finance the construction has reached nearly 4 trillion renminbi, or $640 billion, making it one of the most visible reasons total debt has been surging as a share of economic output in China, and approaching levels in the West. ..... the high-speed lines, which haul only passengers ..... The high-speed trains are also considerably more expensive than the heavily subsidized older passenger trains. A second-class seat on the new bullet trains from Beijing to Guangzhou costs 865 renminbi, compared with 426 renminbi for the cheapest bunk on one of the older trains, which also have narrow, uncomfortable seats for as little as 251 renminbi. ....... The first line, from Beijing to Tianjin, opened a week before the 2008 Olympics; a little more than four years later, the country now has 9,349 kilometers, or 5,809 miles, of high-speed lines. ...... a country where four-fifths of new cars are sold to first-time buyers, often with scant driving experience ..... Flights between Beijing and Guangzhou take about three hours and 15 minutes. But air travelers in China need to arrive at least an hour before a flight, compared with 20 minutes for high-speed trains, and the airports tend to be farther from the centers of cities than the high-speed train stations.... Land acquisition is the toughest part of building high-speed rail lines in the West, because the tracks need to be almost perfectly straight ...... the 800-seat trains are often sold out as many as 10 trains in advance on Monday mornings and Friday afternoons, even though the trains travel as often as every four minutes, and even lunchtime trains at midweek are often full as well.
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