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Some bike lanes in Bristol could be painted red to "reduce conflict" between cyclists and pedestrians as part of a new trial.
Many bike paths in the city centre are a similar colour to adjacent pavements, causing confusion among where people should cycle or walk.
Transport bosses at Bristol City Council believe that a bright colour will prevent pedestrians from straying into cycling lanes without realising.
The trial was welcomed by cycling and walking campaigners, and could be expanded in the future.