Officers have focussed on the issue over the last two weeks
Sixteen arrests have been made in relation to drink or drug driving during the Manx Grand Prix and Classic TT period.
The Island's police say the roads have been busier during the racing fortnight.
The Isle of Man Constabulary says it's an issue officers have been focussing on throughout.
Inspector Elliot Butler says there'll be further analysis to determine the split between locals and visitors:
Plans submitted for temporary base for Douglas RNLI
Discussions about its permanent future are still ongoing
Work underway to remove asbestos from former Golf Links Hotel
Areas containing hazardous material identified in report
Police raise welfare concerns about vehicle occupant
Officers looking for a pale blue Ford Fusion
New EV charging points planned for Island's ports
Manx Utilities also planning a solar canopy at Ronaldsway
