A railroad signal includes a mounting bracket and a signal head, the signal head being mounted to another structure by the mounting bracket, wherein the signal head includes a signal housing, a plurality of signal lights positioned in the signal housing, and a protection device for reducing or eliminating wind forces, the protection device comprising a snow shield and at least one wind guide element.

A railroad signal includes a mounting bracket and a signal head, the signal head being mounted to another structure by the mounting bracket, wherein the signal head includes a signal housing, a plurality of signal lights positioned in the signal housing, and a protection device for reducing or eliminating wind forces, the protection device comprising a snow shield and at least one wind guide element.

A signal light assembly is provided that comprises a multi-position Fresnel lens having a circumference, a first side and a second side. The signal light assembly further comprises a main housing configured to attach to the multi-position Fresnel lens. The multi-position Fresnel lens includes a first plurality of pads and a second plurality of pads on the first side of the multi-position Fresnel lens such that the first plurality of pads and the second plurality of pads are different and alternatively disposed. The first plurality of pads corresponds to a first range operation related to a first focal length. The second plurality of pads corresponds to a second range operation related to a second focal length. The multi-position Fresnel lens is disposed in a first position corresponding to the first range operation or in a second position corresponding to the second range operation based on the use of either the first plurality of pads or the second plurality of pads for assembly between the main housing and the multi-position Fresnel lens.

A signal light assembly is provided that comprises a multi-position Fresnel lens having a circumference, a first side and a second side. The signal light assembly further comprises a main housing configured to attach to the multi-position Fresnel lens. The multi-position Fresnel lens includes a first plurality of pads and a second plurality of pads on the first side of the multi-position Fresnel lens such that the first plurality of pads and the second plurality of pads are different and alternatively disposed. The first plurality of pads corresponds to a first range operation related to a first focal length. The second plurality of pads corresponds to a second range operation related to a second focal length. The multi-position Fresnel lens is disposed in a first position corresponding to the first range operation or in a second position corresponding to the second range operation based on the use of either the first plurality of pads or the second plurality of pads for assembly between the main housing and the multi-position Fresnel lens.

An system including a housing defining an enclosure and having an aperture in an exterior surface of the housing; a concave reflector, the reflector being disposed on or in the enclosure of the housing to reflect light emissions; a plurality of solid state light sources disposed within the housing to direct light emissions within the enclosure towards the reflector, the plurality of solid state light sources including multiple groups of solid state light sources; and a mixing chamber defined by a space within the enclosure located between the reflector and the aperture, wherein the reflector is configured to reflect light emissions from the plurality of solid state light sources towards the mixing chamber where the reflected light emissions are to combine before exiting the housing through the aperture.

An system including a housing defining an enclosure and having an aperture in an exterior surface of the housing; a concave reflector, the reflector being disposed on or in the enclosure of the housing to reflect light emissions; a plurality of solid state light sources disposed within the housing to direct light emissions within the enclosure towards the reflector, the plurality of solid state light sources including multiple groups of solid state light sources; and a mixing chamber defined by a space within the enclosure located between the reflector and the aperture, wherein the reflector is configured to reflect light emissions from the plurality of solid state light sources towards the mixing chamber where the reflected light emissions are to combine before exiting the housing through the aperture.

A railway signal replacement lamp module apparatus, including a lamp housing sized to fit within a railway signal housing and a receptacle to contain a solid state light source within the lamp housing. Some embodiments include, in combination with other aspects, at least one spring-loaded connector integral to and positioned within or on the lamp housing to interface with an electrical conductor feature of a railway signal; and a thermally conductive material disposed on an exterior surface of the lamp housing to provide a thermal conduit from an exterior of the lamp housing to an interior of the railway signal housing.