Blue Beacon

Types of emergency blue beacon lights

Mobile emergency signs, commonly known as blue flashing lights, blue roof lights or blue beacon lights. They are basically fitted with three types of light source: halogen bulb, xenon tube or LED diode. The most modern of these is the LED diode, which manufacturers make more efficient with various solutions to increase the luminous efficacy, for example: magnifying lenses or parabolic reflectors of various designs. At the same time, blue rooflights with halogen or xenon light sources are still available, depending on the user's needs.


Blue beacons can be of various configurations according to the mounting. The magnetic blue light is typically fitted with a cigarette lighter socket, but there are also flush-mounted rooflights, i.e. with a fixed screw fixing, and DIN standard tube-mounted rooflights which can be connected to the vehicle or siren's electrical system.


These blue beacon lights are available in 12V or 24V versions according to voltage. In addition to the blue light, mobile lights are also available in red and yellow. Depending on the type, the colour of the dome or the LED colour can be selected according to the user's requirements. Multicolour blue lamps are now also available, which means that 2 to 3 or 4 colours can be displayed on the lamp body. This design allows the vehicle using the warning signal to have emergency vehicle privileges, e.g. to be able to rush to the scene of an accident to secure a road maintenance vehicle.


The number of modules in the LED roof light may vary depending on the manufacturer, the main thing is that the performance must comply with the applicable road traffic regulations and standards.

Depending on the type of the blue beacon and the customer's requirements, it can flash or strobe, or flash continuously in a circle to imitate a rotating flashing light. The flashing pattern of the blue light signal may vary from country to country, so manufacturers program several patterns into the lamp's electronics, which the user or installer can choose, taking into account the country's regulations. In Hungary, the European standard is also applicable, which means that blue roof indicators must comply with the R65 standard, which specifies the photometric parameters of the product. The ORFK Instruction 1/2017 is responsible for the police tasks related to the authorisation and control of the installation and use of distinctive and warning signalling transmitters.

When to choose a blue emergency beacon light?

You should choose a blue roof sign if you want to ensure 360° visibility or if you do not want the vehicle to be visible as a sign. For example, on diplomatic, secret service, investigative authority vehicles or emergency service vehicles used intermittently (gas works, water works, ELMŰ). However, a blue roof light can also be used when the vehicle structure does not allow the use of a light bridge, for example: crane trucks, lift trucks, construction machinery or when a cost-effective solution is required.