We are out with police in South Yorkshire catching drivers who flout the laws. It comes as two thirds of drivers admit to breaking traffic laws when behind the wheel, according to a new study by the road safety charity Brake.
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Operation Shimmer is targeting the minority of cyclists in the city who cause a danger to themselves and others by cycling without lights.
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Detectives have released a CCTV image of a suspect they would like to identify after a man was stabbed in an attempted street robbery.