Balaclava-wearing hoodlums use illegal e-bikes to race through the city centre at dangerous speeds. Ms Dixon said she had repeatedly heard concerns from residents about the impact of illegally used dirt bikes and e-bikes. Man arrested after accidentAlso last month, a man was arrested after suffering serious injuries in a collision involving two vehicles in Bradford. West Yorkshire Police said officers were carrying out a proactive operation targeting the illegal use of electric bikes when a rider failed to stop for police at about 6.33pm on Sunday, July 12. Man taken to hospitalEmergency services attended the scene and the man was taken to hospital for treatment.