From next month there'll be a series of temporary speed limits around the TT course for roadworks preparing for the races.
The measures will be in place between Monday, March 9 and Friday, May 8.
They'll be in force in parts of the course such as Quarterbridge to Glen Vine and Kirk Michael to Sulby.
The Department of Infrastructure's also announced restrictions around the Creg-Ny-Baa, Ballacraine, Crosby, and Ramsey.
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