Race officials say the roads open car is making its way around the course.
They're reminding people not to enter closed roads until the car has passed.
Roads around the course are expected to close at 10am tomorrow, Saturday, June 6 - with organisers aiming to reschedule the Senior TT.
They've confirmed the Sunday contingency won't be used because of a worsening weather forecast, and the Superstock race 2 has now been cancelled.
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