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When must cyclists ride in single file?

Reviewed on 7 Oct 2026

Question image: When must cyclists ride in single file?
  • A Always, without exception
  • B Only during the day
  • ✓ On stretches with poor visibility, when they hold up traffic, and at night or in poor visibility
  • D Never, they must always ride two abreast

Why this is the correct answer

Cyclists may ride two abreast on the hard shoulder or, if there is none or it is not usable, on the minimum necessary part of the carriageway. However, they must ride in single file on stretches with poor visibility, when they affect the flow of traffic, and when riding between sunset and sunrise or in weather or environmental conditions that significantly reduce visibility (RGC art. 36.2, as amended by RD 518/2026).

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