Rolling stock is the fleet of all the wheeled vehicles owned by a railroad or government that can be rolled on railroad tracks. In some countries, like the United States, this definition includes powered vehicles, like locomotives. Some other countries, however, such as the United Kingdom, deliberately segregate the two, with locomotives and other powered vehicles termed running stock or motive power. Outside the railroad industry, some companies use the term to mean any wheeled, easily transportable vehicle, such as a truck or automobile.
Other than locomotives and other powered cars, there are four main types of railroad rolling stock. The two revenue producing cars, freight and passenger, are by far the most numerous. Freight cars are designed for all manner of contents, whether boxed or loose, solid, liquid or gas. The essentially a very large box set upon wheels and secured by sliding doors, is the most common hopper wagon" href="http://www.railway-wagon.com/hopper-wagon-1.html">
Passenger cars are the other revenue producing cars. These also are produced in a number of different styles, usually based on their intended use. Those passenger cars built for long journeys, for example, have fewer seats and are generally more comfortable than the cars built for commuter trains, where rides of over 90 minutes are uncommon. Specialty passenger cars used on long journeys include meal cars, which are like restaurants on wheels, and observation cars, designed to enhance passengers’ ability to appreciate the scenery while traveling. Sleeper cars with individual passenger compartments that can be converted to bedrooms are useful for even longer journeys.
The other two types of non-powered hopper wagon" href="http://www.railway-wagon.com/hopper-wagon-1.html">
All railroad cars are built according to industry standards, can be run on all tracks and be connected to each other regardless of type or which railroad they belong to. From a financial perspective, a railroad’s rolling stock is considered almost liquid in nature, and is frequently pledged as
railway engineering work vehicle
for loans. This makes keeping track of rolling stock a critical function for any railroad.
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