Signalrammer

Signalrammer is a Swedish term that translates to "signal frame" or "signal gantry." In railway terminology, it refers to a structure that supports multiple railway signals, typically for a set of tracks. These structures are common in areas with complex track layouts, such as at junctions, stations, or approach areas, where several signals are needed to guide trains.

Signalrammers are designed to position signals at an appropriate height and visibility for train drivers, ensuring they can clearly see the signal indications. They are often made of metal, such as steel, and are engineered to withstand environmental conditions and the stresses associated with supporting heavy signaling equipment. The design can vary significantly depending on the specific railway system, the number of signals to be supported, and the available space.

The primary purpose of a signalrammer is to consolidate signals for multiple tracks onto a single, visible structure. This improves operational efficiency by reducing the need for individual signal posts and ensuring all relevant signals are in a consistent and easily observable location for approaching trains. In modern railway systems, the signals mounted on a signalrammer are often electrically controlled and integrated into a centralized traffic control system. The term itself is specific to Swedish railway infrastructure but the concept of supporting multiple signals on a single structure is a universal railway engineering practice.