Improvements are being made to stop a Liverpool park being used as a race track.
About £500,000 is to be spent at Walton Hall Park - with half of that being spent on keeping quad and scramble bikes out.
Liverpool City Council says that the park has also been used as a dumping ground for stolen cars.
A month ago an eight-year-old boy suffered a broken leg when he was hit by a bike in the park.
The park is be fitted with improved railings and gates to stop bikes getting in.
Other improvements include work to pathways and the park's entrances.