The Department of Infrastructure says there'll be temporary speed limits on parts of the TT course next week.
Sections between the Creg Ny Baa Back Road and Hillberry and four stretches between Quarterbridge and Sulby Village will all see 30mph or 40mph zones brought in.
The restrictions will start at 6am next Monday, March 9 and run until 6pm on Friday, May 8
IT's while the DOI and sub-contractors do routine maintenance and get the course ready for this year's festival.
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