A third rail, also known as a live rail, electric rail or conductor rail, is a method of providing electric power to a railway locomotive or train, through a semi-continuous rigid conductor placed alongside or between the rails of a railway track.
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Third rail systems are also less vulnerable to weather-related disruptions that affect overhead wires. As the third rail is on the ground it is unaffected by strong winds and less exposed to heavy snowfall.
Third-rail supply is employed only by urban rapid-transit railroads operating on low-voltage direct current. … transmute the overhead wire or third-rail current to a supply of variable voltage and frequency suitable for feeding to three-phase alternating-current motors.
A caboose is a train car that is usually at the end. If you are pulling up the rear, you could call yourself the caboose. The engine is the first car on a freight train, and the last car is usually the caboose. Besides being last, the other feature of a caboose is its use by the crew.
In rail transport, track gauge (in American English, alternatively track gage) is the distance between the two rails of a railway track. All vehicles on a rail network must have wheelsets that are compatible with the track gauge.
An elevated railway or elevated train (also known as an el train or el for short) is a railway with the tracks above street level on a viaduct or other elevated structure (usually constructed from steel, cast iron, concrete, or bricks).
TIL Rats and birds don't get electrocuted by the third rail because they don't form a grounding connection. This is not some property inherent to rats and birds. This is because when they touch the third rail, they aren't touching anything else.
The short answer is that trains must blow their horn's at railroad crossings because it is federal law (at least in the United States). The longer answer has to do with the safety of both the public, and the rail crew.
All railroad lines shall be considered live, until verified that a line is abandoned or dead (out of service). Never assume a line is dead, always assume the line is live or active, until confirmed by the railroad for work on or over railroad right-of-way.
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.
The United States possesses the largest railway network in the world, in terms of total operating length. China and India trail behind as the second and third largest railway networks respectively.