The Island's Roads Policing Unit has had reports of people disobeying the temporary speed limit on the Mountain.
It's currently 40mph between the Creg Ny Baa and Hillberry for road surface repairs.
Officers say people aren't sticking to the limit, putting the safety of workers in jeopardy.
As a result, they'll be on location performing speed enforcement throughout the week.
High ground could see 4 inches of snow on Saturday night
Mountain Road unlikely to open before Monday
Yellow warning for freezing temperatures tonight
School bangers night called off
AK47 and Uzi handed in to police
"No dispute" over Liverpool Ferry Terminal, says main contractor
More weekend bus strikes to come after 10-day walkout?
Minister to face question about bus strike