However, the source of information on offending on bail was different. These sources differ in three aspects.
Traffic offending The Case Monitoring data contain information on all traffic offending.
The criminal histories only contain information on some traffic offending until the merger of the Police and Traffic Safety Service in mid 1992. Including all traffic offending has two effects. First, the number of cases where an offence was committed on bail will be higher if all traffic charges are included. Secondly, in some cases the major offence committed while on bail will be a traffic offence rather than another type of offence. This will occur when the traffic offence attracted a more serious sentence than the other offences committed while on bail.