Police are launching a crackdown on "dangerous and inconsiderate" cyclists who are putting other road users' lives at risk.
Thames Valley Police are getting tougher on unsafe cyclists
Cyclists in Oxford who ignore red lights, cycle in prohibited areas and do not have lights will be stopped and fined by police.
Many cyclists are inconsiderate to pedestrians and ignore rules of the road, according to police.
Officers will be looking out for stolen bikes as part of the crackdown.
Pc David Roberts-Ablett said: "I regularly see cyclists going through red lights and not using proper lighting on their bikes when it's dark.
"This is very dangerous and seriously increases your chances of being hit by a car.
"Tragically a young girl on a bike died this year when she was hit by a bus. We want to do everything we can to make cyclists and pedestrians safer."