Highway Code Rule 61

Cycle Routes and Other Facilities. Cycle lanes are marked by a white line (which may be broken) along the carriageway (see Rule 140). Use facilities such as cycle lanes and tracks, advanced stop lines and toucan crossings (see Rules 62 and 73) where they make your journey safer and easier. This will depend on your experience and skills and the situation at the time. While such facilities are provided for reasons of safety, cyclists may exercise their judgement and are not obliged to use them.

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