The constabulary is asking motorists not to use the Islands Heritage Trail to get around parts of the Island.
Several reports have been received of motorbikes using the route on the old railway line between the TT Access Road and Glen Vine, according to officers.
Authorities say the trail is a public right of way, bridleway and mountain bike link route and is not suitable for motor vehicles.
They've added patrols will continue to be carried out in the area to enforce the law.
One person cut from car after Mountain crash
Firefighters were called into action in the early hours of Sunday morning.
MHK questions public sector worker overpayments
How many public sector workers have been overpaid - and then subject to stress and emotional harm?
Your chance to become weather forecaster!
Could you help forecast the Island's weather?
Company sets up TT hub
A new TT merchandise shop is going to replace a former nightclub in Douglas.
Are gas supplies being cut off illegally?
Questions about vulnerable customers having their gas cut off will be raised in the House of Keys next week.
TT footbridge construction to close road
Part of the TT course will shut tomorrow while a footbridge is installed.
Police name biker who died in Ballamodha crash
Police say a motorcyclist has died after a crash earlier this week.
Peel cars return home
There's a chance to see two of the world's smallest production cars, which have returned home this weekend.
