Transport : Subways are becoming more and more automated

Around 96,000 train and bus drivers work in local public transport in Germany - but almost half of them will retire in the next few years.

Transport : Subways are becoming more and more automated

Around 96,000 train and bus drivers work in local public transport in Germany - but almost half of them will retire in the next few years. Around 40,000 jobs would have to be filled by 2030, says Eike Arnold, spokesman for the Association of German Transport Companies. "We are desperately looking for drivers." Autonomous buses are already being tested in dozens of cities, but so far there is only a driverless subway in Germany in Nuremberg. Why?

Computer driving is much easier on rails in a tunnel than on the road where cars, cyclists and pedestrians intersect. Highly automated, trains can also run one behind the other at much shorter intervals, at 100-second intervals, such as on the main line in Nuremberg, for example. According to the manufacturer Siemens, up to 30 percent more passengers can be transported on existing routes. Thanks to anticipatory starting and braking, "autonomous trains also consume significantly less drive energy and contribute to reduced wear and tear on vehicles and rails," says Axel Schuppe, Managing Director of the German Railway Industry Association.

Automation is already planned

"Millions of passengers in over 60 cities around the world - including London, Paris, Vancouver, Sao Paulo, Mexico and Singapore - use automated trains every day," says Schuppe. "When new lines are built today, the trains should almost always run autonomously, and automation is part of the planning."

Like now in Hamburg. The new U5 "will run automatically and without drivers," says Hochbahn spokesman Christoph Kreienbaum. With the existing network, on the other hand, the costs and technical effort would be "in no reasonable proportion to the yield". Partial automation there should soon enable a 100-second cycle: the computer controls between the stations, and the drivers take care of arrival and departure.

The metro in the northern French city of Lille was the pioneer of the driverless subway 40 years ago. Nuremberg followed 15 years ago, in 2008, with the newly built U3 line. For two years it ran on the main route in mixed operation with the driver-controlled U2. This was then also automated, step by step and during ongoing operations.

The timetable is getting denser

The necessary technology cost an additional 110 million euros. But it was worth it long ago, says Elisabeth Seitzinger, spokeswoman for the Nuremberg transport company VAG. "We wouldn't give that up today!" The timetable is denser. Fewer vehicles and 105 fewer subway drivers are needed. And the operation is more flexible: when there is a large rush, trains can be brought in quickly from the depot without a driver having to be fetched from the end of the day. "More performance, less effort", is the conclusion of the VAG.

Around 70 million passengers travel through Nuremberg in driverless trains every year. The passengers did not show any reservations, "it was well received from the start, it wasn't an issue," says Seitzinger. Where the driver's cab is in conventional subways, here the passengers stand and have a clear view of the route.

For safety reasons, the platforms of many driverless subways are separated from the tracks by barriers. Only when the train stops do the doors of the barrier open. In Nuremberg, on the other hand, they rely on sensors in the tracks: If something falls onto the track, they trigger emergency braking.

There are hardly any light rail vehicles that "do not at least think about automation in the future," says Schuppe. "The business with digital control and safety technology, which is a prerequisite for driverless driving, is picking up noticeably." The railway industry is increasingly receiving inquiries from municipal transport companies.

Drivers will be needed for decades to come

Many cities are now rolling out the basic technology for train automation, "for example Berlin, Frankfurt am Main or Munich," says the association manager. This makes the network more efficient even without expansion. "In the future, trains in the Frankfurt network should be able to run every two minutes, for example."

The Munich transport company MVG had planned a pilot test with platform doors, but canceled it again for cost reasons. Fully automating the subway would require new rolling stock and infrastructure. "Converting the existing network to it would cost a lot of money and take many years to decades," says spokesman Maximilian Kaltner.

The Berlin BVG also wants to gradually automate the subway so that more frequent intervals are possible. But operating the network, some of which dates back to the imperial era, with its many listed subway stations without a driver would be a huge technical and financial challenge, says spokesman Markus Falkner.

In the long term, the trend is towards autonomous driving, says VDV spokesman Arnold. Where a new subway or a new line is being built or where infrastructure and trains have to be completely renewed, things are faster. But drivers would still be needed for decades.