A new round of breath test checkpoints is to start tomorrow.
Officers will be manning checkpoints in Hamilton Parish, Devonshire, Pembroke and Paget until Sunday.
The checkpoints will be mobile and police will pop up in any parish listed at any time over the specified period.
The checkpoints coincide with the World Rugby Classic, which is under way at the National Sports Centre in Devonshire and one of the biggest social events of the year.
The latest checkpoints were announced in the Official Gazette last Wednesday.