 The specially-trained teams attend the scenes of all such incidents, where, amongst other things, they take numerous measurements of the final layout of the scene and examine vehicles, all in a bid to piece together the cause of the crash.The ProViDa In Car Video System is fitted to both marked and unmarked traffic patrol cars and motorcycles with the aim of improving driver behaviour and road safety.It is used to detect traffic offences and to educate, advise and, if necessary, prosecute offenders.