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:
Balthane Roundabout targeted for Spring 2027 completion, says infrastructure minister
Construction could begin in September 2026, with coal tar issues continuing to delay road schemes across the Island
Jurby Junk founder dies aged 90
Stella Pixton ran the famous shop in the north of the Island for more than 40 years
Treasury exploring replacement payment card scheme
New system could succeed MiCards after U-turn extension
Liverpool ferry terminal dispute escalates in House of Keys as minister refuses to publish final cost
Infrastructure minister says legal advice prevents disclosure of the final cost, as an MHK claims the overall price tag exceeds £100 million
Assisted Dying Bill: Health minister writes to MHKs as Ministry of Justice holds legislation under review
Ministry of Justice requests clarity on post-death reviews and capacity protections