WATCH: ITV Anglia's Kate Prout reports from the launch of the drink and drug-driving campaign.
Norfolk and Suffolk police say they have stopped five people within the first 24 hours of their Christmas drink and drug-driving campaign.
The annual initiative officially began on 1 December and will run until New Year's Day.
It will see extra roadside checks carried out, and for the first time an online portal has been set up for the public to report suspected drink or drug-driving.
Police say they have also reserved specific slots at Magistrates Courts in the region, which mean offenders could lose their license within 24 hours of failing a roadside test.