What keeps a train on the tracks?

The wheel bevels are specifically designed so that when the train goes around a corner it stays on the tracks. The wheels that have to travel a greater distance have a greater diameter, and everything stays aligned. The end result is a train that stays on the tracks.



The primary mechanism that keeps a train on the tracks is the conical shape of its wheels, rather than just the flanges (the "lips" on the inner edges). Most people believe the flanges do all the work, but they are actually a secondary safety measure. Train wheels are slightly tapered—wider on the inside and narrower on the outside. When a train enters a curve, centrifugal force pushes the wheelset outward, causing the larger part of the outer wheel to ride on the rail and the smaller part of the inner wheel to do the same. This creates a natural "steering" effect known as kinematic oscillation, which centers the axle. Combined with the massive weight of the train providing vertical stability through gravity and friction, this self-correcting geometry ensures the train follows the path of the rails smoothly without constantly grinding against the flanges at high speeds.

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A Steel spikes in wooden crossties are the most obvious way railroads keep rails in place in North America. They are one piece of a system of components that has been evolving since the 19th century. The system includes spikes, tie plates, crossties, track anchors, bolts, rock ballast, and other components.

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A Steel spikes in wooden crossties are the most obvious way railroads keep rails in place in North America. They are one piece of a system of components that has been evolving since the 19th century. The system includes spikes, tie plates, crossties, track anchors, bolts, rock ballast, and other components.

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A combination of friction, gravity, and mechanical force keeps the train on track and allows it to move. The wheels are fixed in the vertical plane by gravity: the weight of the train keeps the wheels seated on the tracks.

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Coaches and locomotives are put on the tracks with the help of cranes. They are transported to the yards where they are assembled and put on to the tracks.

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As the outside wheel's circumference becomes larger it is able to travel a greater distance even though it rotates at the same rate as the smaller inside wheel. The train successfully stays on the tracks! In this activity you will test for yourself how train wheel shapes impact their ability to stay on track.

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Sometimes, the trains can stop in the middle because of technical or mechanical problems with locomotives or picking or dropping off the freight cars at the industrial tracks. They can also stop in the middle because they are waiting for the section ahead of them to get clear of a train occupying it.

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Mainline locomotives are equipped with snow plows that remain in place year-round. When there is too much snow for the locomotive to handle, railroads use specialized on-track machinery to clear the tracks.

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Wood has the natural flexibility that is perfectly suited for the loads running on railroad tracks every day. Wood ties are engineered to perform under heavy load conditions. The durability of the wood tie means lower costs for railroads.

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A lot of trains are powered by electricity. The third rail or electrical line running in parallel with the tracks provides power. The voltage of the lines transforms into electrical current through transformers, which power the wheels' motors.

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The railway ties are embedded and supported by hard packed ballast in the track bed. The rails are laid on top of the ties with tie plates and secured with spikes, screws, or clips, depending on the tie material and tie plate design.

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Historically, this would require a lever to be moved by a human operator, and some switches are still controlled this way. However, most are now operated by a remotely controlled actuator called a point machine; this may employ an electric motor or a pneumatic or hydraulic actuator.

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There are switches in the tracks, with moving parts that lead the train either to the left track or the right track.

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Trains cannot collide with each other if they are not permitted to occupy the same section of track at the same time, so railway lines are divided into sections known as blocks. In normal circumstances, only one train is permitted in each block at a time. This principle forms the basis of most railway safety systems.

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As of August 2022, the fastest train on Earth, based on its record speed, is the Japanese L0 Series Maglev with a record speed of 603 kilometers per hour.

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The Trans-Siberian Railway, historically known as the Great Siberian Route and often shortened to Transsib, is a large railway system that connects European Russia to the Russian Far East. Spanning a length of over 9,289 kilometers (5,772 miles), it is the longest railway line in the world.

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1: Shanghai Maglev - 460 kph/286 mph (China) The world's fastest public train is also unique – it's the only link in the world currently carrying passengers using magnetic levitation (Maglev) rather than conventional steel wheels on steel rails.

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While modern trains won't litter the tracks with human excrement, the traditional method did just that. This is what was known as a hopper toilet. It could either be a simple hole in the floor (also known as a drop chute toilet) or a full-flush system.

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Tracks aren't one way, so even if you've seen a train traveling east, a train could travel west on the very same track. It's also important to keep in mind that locomotives can both push and pull rail cars, so the location of the locomotive isn't always an indicator of which direction the train is traveling.

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