0 a police vehicle from which police officers test drivers' breath to see how much alcohol they have drunk
For an operation involving a large number of police (typically 10-20) at a fixed location, the colloquial term booze bus is often used.
It is, of course, the case that much of the misbehaviour of "boozing bus parties" already constitutes offences against the criminal law—breach of the peace, public indecency, and so on.
We are all aware of what has been termed the problem of the "boozing bus party", and the nuisance which it causes—the rowdy behaviour and the offences against decency.
