Correct answer
One, in the median longitudinal plane
Three-wheeled vehicles and motorcycles must have one or two main-beam headlights. Two lights at the outer edges are required for vehicles more than 1.3 metres (1300 millimetres) wide, whereas if there is only one light, it must be positioned in the vehicle's median longitudinal plane.
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One, in the median longitudinal plane
Two, at the outer edges
Two at the sides and one in the centre
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