Correct answer
Two visible from the front and two visible from the rear.
There are two white lights visible at the front and two red lights visible at the rear. They indicate overall width and supplement position lights. They are compulsory on vehicles wider than 2.10 m and optional between 1.80 and 2.10 m.
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One visible from the front and one visible from the rear.
Two visible from the front and one visible from the rear.
Two visible from the front and two visible from the rear.
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