What does the term 'switch' refer to in rail terminology?

In rail terminology, the term 'switch' specifically refers to a device that enables the diversion of train movement from one track to another. This mechanism allows trains to change tracks safely and efficiently, which is crucial for managing train routes, preventing collisions, and facilitating the movement of trains in and out of yards and stations. The switch consists of movable rails, known as switch points, which can be aligned to guide the train onto the desired track. Understanding the function of switches is fundamental in railroad operations and safety protocols, making it a key component of rail infrastructure.

The other options, while related to trains and rail systems, do not define 'switch' correctly. A type of locomotive pertains to the engines that power trains, the speed of a train relates to how fast it travels, and a type of load refers to the cargo transported by trains. None of these definitions equate to the specific function that a switch serves in rail operations.