Säännöllistämisrasite

Säännöllistämisrasite, also known as a frequency regulator or rhythmic signal, is a type of signal used in railroad signaling systems. It is a recurring sequence of electrical impulses that helps regulate the speed of trains, ensuring that they operate at a predetermined frequency.

The säännöllistämisrasite is typically used on rail lines where strict speed control is required, such as in urban areas or on lines with limited visibility. The signal works by emitting a series of electrical pulses that are picked up by the train's onboard signaling equipment, which interprets them as a specific frequency. This frequency is used to control the train's speed, with the train accelerating or decelerating in response to changes in the signal.

The säännöllistämisrasite is often used in conjunction with other types of signals, such as absolute and intermediate signals. It plays a crucial role in ensuring safe train operation, particularly on routes with complex speed restrictions or tight curves. The signal can be reset by the train crew or by other personnel operating the signaling system, allowing for adjustments to be made as needed.

In modern railroad signaling systems, the säännöllistämisrasite has largely been replaced by more advanced forms of speed control, such as electronic interlockings. However, it remains an important part of the history of railroad signaling, and its principles continue to influence the design of modern signaling systems.