Eight people have been charged with drink driving offences during the TT fortnight so far.
A total of nine were arrested, of whom four were visitors who were all charged and five were local residents. Of those five, four were charged and one was below the limit.
Officers dealt with four drink-drive offences on Saturday night alone.
In one a case, a car ended up on its roof.
Police posted on their TweetBeatIOM Twitter page: ‘Another drink driver.
‘One is too many – but four in one night. This time a car on its roof. It’s not worth it. We are out and about and we will catch you.’
Inspector Derek Flint said: ‘There have been a total of nine through custody for drink drive matters in the last week.
‘Four were visitors who were all charged. Five were local residents. Of them, four were charged, one was below the limit.’
The central message for this year’s TT road safety campaign is ‘For everyone’s sake slow down.’
The campaign calls on bikers to be aware of the consequences of dangerous and careless riding, and to take care on the island’s roads.
The message is underlined by two striking images.
One shows a crashed motorcycle in a bin with the message ‘Don’t Bin It’, a play on the phrase used by bikers to describe a crash.
The second shows motorcycles arriving on the Steam Packet fast craft Manannan alongside a photo of an injured biker heading home on foot, and on crutches.
The message is ‘Biker to Foot Passenger’.