Slashdot Mirror

← Back to Stories (view on slashdot.org)

China To Launch Self-Driving Bullet Trains That Will Travel At 217 MPH (independent.co.uk)

Posted by BeauHD on from the first-of-its-kind dept.

An anonymous reader quotes a report from The Independent: China will introduce the world's first driverless trains to run at speeds of up to 217 mph (350 km/h) on the Beijing-Zhangjiakou railway line. The automatic operation bullet trains were trialled on a section of the Beijing-Shenyang line in 2018 by the China Railway Corporation (CRC) and the system passed all safety tests. "The bullet train can automatically depart, operate between stations and adjust the train's operation to meet its precise timetable after a single button is pressed," a researcher from China Academy of Railway Sciences told the Sciences and Technology Daily. A driver currently performs these operations on high-speed trains.

For the first 10 years of the high-speed ATO trains, an attendant will still be deployed on board to ensure nothing goes wrong. After that, the trains will be totally driverless. Experts say this should improve safety long-term. "An automatic driving system could greatly improve the safety of trains which run on high-speed railways, compared with human drivers who may have sudden health problems or disregard safety precautions during driving," Sun Zhang, a railway expert and professor at Shanghai Tongji University, told the Global Times. The Beijing-Zhangjiakou Line is currently being constructed for the 2022 Winter Olympic Games, "to enable easy travel between Beijing and the Winter Olympic Village in 50 minutes," the report says.

4 of 84 comments (clear)

  1. Self-driving is actually not that impressive by h33t+l4x0r · · Score: 4, Insightful

    When you're a train.

    1. Re:Self-driving is actually not that impressive by LynnwoodRooster · · Score: 4, Funny

      The problem is, when an elevator gets stuck, you have maybe half a dozen people trapped. When an escalator gets stuck, it could be hundreds...

      --
      Browsing at +1 - no ACs, I ignore their posts. So refreshing!
    2. Re:Self-driving is actually not that impressive by AmiMoJo · · Score: 4, Informative

      The current high speed trains in Japan, doing 320 kph (limited due to noise), are actually very highly automated.

      At that speed the driver can't really see much. Signs and signals zip by so fast you can't read them, so they are all duplicated electronically in the cabin anyway. There are automated emergency systems too, which can apply brakes if the train is speeding or when there is an external problem like an earthquake or stopped train on the line. The trains run not much further than the minimum safe distance apart, largely governed by the reaction speed of the automated systems and the stopping distance of the train (a few kilometres).

      The drivers are also trained to act like robots in the event of an emergency, or really any anomaly. They are not allowed to use their initiative at all, they must look the problem up in a book and follow the instructions precisely.

      Even at the stations there is an automated system that helps the driver stop in precisely the right place. Everyone lines up by white markings on the platforms and the doors end up exactly opposite them, to within a few centimetres max. That makes boarding and disembarkation very efficient and non-terminal stops only need to be 30 seconds.

      You might wonder what the point of the drivers is then. Well, aside from reassuring the passengers, they do actually control the train (within the parameters allowed by the automation) and will make adjustments to keep it on time. If the train is 3 seconds behind they can accelerate a tiny bit harder or cruise 2 kph faster to make it up. But the main thing is that it means the automated systems don't have to be certified as absolutely fail-safe for fully driverless operation.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
  2. Nice, but not huge innovation because ... by Anonymous Coward · · Score: 5, Informative

    First it is a train : aka you don't steer anything apart speed plus all the TGV (French high speed trains) have automatic speed control using TVM ( https://en.wikipedia.org/wiki/Transmission_Voie-Machine ) on high speed line since a long time. This has been somehow superseeded by the European standard ERMTS https://en.wikipedia.org/wiki/European_Rail_Traffic_Management_System that also take benefit of the GSM Rail network on most European high speed lines (Germany, Spain ... and even UK !).

    Plus at high speed, it takes kilometers for a train to stop. So even if you see an issue in front of you and stop right now, you will blast into it with your speed/inertia although beeing with full brake down. The thing in the middle of the rail road will be destroyed/dead and the nose of your train suffering serious damages that might require the whole train to go to maintenance. In such a perspective autonomous train are very different from autonomous car because it has so little level of liberty for its AI choices : speed up/down or brake.

    FYI, the Alvia (Spanish high speed train) crash in Spain was mainly due to the lack of ERMTS speed control in the section in a curve at the exit of a high speed line. For cost reason, they have decided not to but ERMTS here. ERMTS would have limited the speed and prevent the train crash in the curb in the first hand. https://en.wikipedia.org/wiki/Santiago_de_Compostela_derailment#Investigation

    TVM & ERMTS directives are direct consequences intuited from train central routing systems state. The kind of consequences that triggers a shift of a train from a railway to another to avoir collision and ensure proper routing to destination.