Tilting Trains

Tilting Trains

A tilting train is a train that has a mechanism enabling increased speed on regular rail tracks. As a train (or other vehicle) rounds a curve at speed, objects inside the train experience centrifugal force. This can cause packages to slide about or seated passengers to feel squashed by the outboard armrest due to its centripetal force, and standing passengers to lose their balance. Tilting trains are designed to counteract this discomfort. In a curve to the left, the train tilts to the left to compensate for the g-force push to the right, and vice versa. The train may be constructed such that inertial forces cause the tilting (passive tilt), or it may have a computer-controlled power mechanism (active tilt).

The first tilting train in regular public service was the 381 series electric multiple unit train operated by Japanese National Railways (JNR), which entered revenue service from 10 July 1973 on the Shinano limited express between Nagoya and Nagano on the Chūō Main Line. This technology was not fully implemented world-wide, as the marginally increased curve speeds did not justify the extra expense and technology in many cases. The British Advanced Passenger Train (being operational from 1984 to 1985) was the first to successfully implement active tilt, enabling significantly increased speeds on tight rail curves. Active tilting is the mechanism most widely used today.

Read more about Tilting Trains:  Rationale, Technology, Tilting Trains Around The World, See Also

Other articles related to "trains, train, tilting trains, tilting":

British Rail Class 390 - Description
... In 1997, when Virgin Trains won the InterCity West Coast franchise, they made the decision to replace the train fleet they inherited with new trains ... Virgin placed an order with Alstom/Fiat for the construction of new tilting trains ... Tilting trains were nothing new for the West Coast Main Line ...
Minimum Railway Curve Radius - Factors Affecting The Minimum Curve Radius - Speed
... As a heavy train goes round a bend at speed, the centrifugal force the train exerts on the rails is sufficient to move the actual track, which is only held in place by ballast ... Ideally the train should be tilted such that resultant (combined) force acts straight "down" through the bottom of the train, so the rails feel little or no ... Some trains are capable of tilting to enhance this effect for passenger comfort ...
Croatian Railways - Rolling Stock - Tilting Trains
... In 2004, 8 modern Bombardier RegioSwinger tilting trains called "ICN" (short for InterCity Nagibni Tilting InterCity) from the German branch of ... These trains are normally deployed on the mountainous route between the two largest Croatian cities, route Zagreb - Split, but are also sometimes on the InterCity routes in the continental part of the country ... time-saving journey with regard to previous trains whose journey took 8 hours, whereas the tilting trains take less than 5 and a half hours, and are more quiet and better equipped as well ...
Tilting Train - History - Advanced Passenger Train
... The Advanced Passenger Train is the basis of tilting trains used today, although none are currently built in the UK ... curves at higher speeds than previous passive tilting trains ... building and actually running in service for a year the train was scrapped ...

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