Roads in the south of the Island will close later as the Pre-TT Classic races get underway.
The Billown Circuit will shut from 6pm as practicing gets underway - it's due to reopen no later than 9.40pm.
Police say if you can't plan journeys to avoid the closures, then you can follow diversions over the Sloc or via Grenaby.
They're advising people to leave extra time for journeys.
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