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Front marker lights are typically mounted below or to the side of the vehicle's normal headlights. They serve the purpose of making the vehicle visible to oncoming drivers or for a driver to see if a vehicle is following them. Rear marker lights or blackout taillights are typically housed in the same unit as the vehicles taillights, and are the ...
End outline marker light. UN Regulation 48 requires vehicles exceeding 2.10 metres (83 in) in width to be equipped with white front and red rear end-outline marker lights on both the left and right, [23] which, like North American identification lights, are intended to indicate a vehicle's overall width and height. The front clearance lights ...
A back course marker (BC) normally indicates the ILS back-course final-approach fix where approach descent is commenced. It is identified by pairs of Morse-code "dots" at 3000 Hz (95 pairs per minute), which will trigger the white light on a marker beacon indicator, but with a different audio rhythm from an inner marker or en-route marker. [5]
An occulting light is a rhythmic light in which the duration of light in each period is longer than the total duration of darkness. In other words, it is the opposite to a flashing light where the total duration of darkness is longer than the duration of light. It has the appearance of flashing off, rather than flashing on.
Watercraft navigation lights must permit other vessels to determine the type and relative angle of a vessel, and thus decide if there is a danger of collision. In general, sailing vessels are required to carry a green light that shines from dead ahead to 2 points (22 + 1 ⁄ 2 °) abaft [note 1] the beam on the starboard side (the right side from the perspective of someone on board facing ...
The most universal type of light is the headlight, which is included on the front of locomotives, and frequently on the rear as well. [2] Other types of lights include classification lights, which indicate train direction and status, and ditch lights, which are a pair of lights positioned towards the bottom of a train to illuminate the tracks.