Definition: Generate an appropriate title for the given text. The generated title must be short and include the main topic of the text. The preferred titles are under fifteen words.
Input: About a third of Derby's 200 e-bikes were left useable following the damage over the past few months. Two boys, aged 14 and 15, admitted criminal damage at Southern Derbyshire Magistrates' Court on 31 May. A 19-year-old man was charged with the same offence while a 14-year-old boy has been charged with taking an e-bike. About 200 e-bikes were placed at 30 points across Derby in June 2018 after about £450,000 of funding was secured. The e-bike scheme has seen about 7,000 riders travel roughly 150,000 miles (241,401 km) since its launch. However, due to "unprecedented vandalism", about 67% of the fleet has been taken off the road. In some cases, hammers and angle grinders were used to smash the bike's digital panels, Derby City Council said. Spare parts have been exhausted and the amount of supplies required are not readily available in the UK. Hourbike, which manages the scheme, said it could no longer operate the scheme with the remaining fleet and the temporary suspension would allow time for options to be explored. The city council and Hourbike suspended the scheme ahead of Derbyshire Police's announcement about the charges. Follow BBC East Midlands on Facebook, Twitter, or Instagram. Send your story ideas to eastmidsnews@bbc.co.uk.

Derby cycle scheme vandalism: Teenagers charged