Motorists are being reminded the Mountain Road will be closed for most of tomorrow, from 10am.
It's so preparations can be made for the one-way system which will operate during TT fortnight.
The road will reopen later tomorrow, after which it will be one-way, in the direction of the course, until Monday, June 15.
Two-way traffic will remain between the Creg-ny-Baa and Douglas throughout the festival period.
easyJet blames delay on 'failure of runway lighting system'
Passengers waiting on delayed flight
Red weather warning: Everything you need to know
Road closures in place as Island braces for impact
Douglas fireworks will now mark start of festive season
Originally due to take place on Bonfire Night
FC Isle of Man launches women's team
"We want to create opportunities" says club chairman