Police say they'll be monitoring the situation in the northwest of the Island after motorists were seen speeding through roadworks.
On Facebook, the Roads Policing Unit says it's had reports of drivers not slowing down through a temporary 40mph limit on part of the TT course.
The stretch between Handley's Corner in Michael and McGuinness's in Barregarrow is being resurfaced by the Department of Infrastructure in preparation for this year's racing.
Officers say they'll be in the area to enforce the limit and protect the safety of DOI workers.
Trainee police constables raise £1,400 with kayak challenge
RNLI honours the 40 years of service between two volunteers
What would be the impact of raising the income tax threshold?
Nominations open for Manx cultural hero awards
Passport and immigration public counters to temporarily close
Overnight delay means today's sailings will set off late
Fireworks displays to kick off with event tonight
Second night of police roadside car checks finds less defects
