With three deaths already on open roads this week, the roads policing unit is issuing an urgent appeal to riders and motorists to take extra care.
They say that means travelling at the right speed for the road conditions and riding within your own ability.
Inspector Terry Stephen says the recent warm weather has probably tempted more riders than normal to go out for a lap.
And he's stressing that roads around the course can still be busy with traffic first thing in the morning.
More than 3,000 jobs added to economy since September 2021
Almost 1,400 in government-run services such as health and education
Review of income thresholds for public sector housing
DOI responds to call from Onchan MHK
Firearms officers deployed to incident near Laxey
No members of the public at risk, say police
A step into the modern era for social security
Secure messaging platform launched
Attempted burglary in Ramsey sparks appeal
'Unknown persons' entered sheds and opened car glovebox
Two Manx high schools told to stop operating CCTV 'inside' toilets
Information Commissioner issues Urgent Enforcement Notices
