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:
Sailings altered as 'ongoing dredging issues' lead to 'insufficient water depths in Douglas port'
Steam Packet makes changes to Manxman's timetable over the coming days
Manx Care asks all GPs to formally adopt Jess's Rule
Follows MHK's question in the House of Keys
Government 'taking rising fuel prices seriously'
Chief minister gives update in the House of Keys
Motion to sell Old Castletown Police Station to be put before Tynwald
The Baillie Scott building's been owned by Manx National Heritage since 2018
