Anti Social Behaviour Order, used mainly against youths who annoy ordinary respectable people and workers.
These can be in the form of curfew orders, so yobs cannot hang out in the street at night. Also to prevent street drinking, thus preventing drunk and disorderly bahaviour. Also to prevent agressive beggars approaching strangers for money.
A method of containment, while a longer term method can be implemented to encourage young people off under-age drinking, drugs, and to get them to school, and then to gainful employment.
John got an ASBO, not to use abusive language.