Motorists do not need to take any action if they see the signs light up between 7am and 7:30am.
The electronic red flag system is being tested this morning around the Snaefell Mountain Course.
The displays, which are used alongside the existing marshal-operated red flag system are located at flag points and will illuminate simultaneously during the scheduled test window.
Motorists do not need to take any action if they see the signs light up between now and 7:30am.
'Too early to tell' what caused fire
Crews from across the Island ensured cover was available
Firefighting foam may have killed fish in Silverburn River
People advised not to enter the water for 28 days
Additional road closure for TT filming ahead of MGP qualifying
Sunday morning closure along Quarterbridge and Peel Road
'Knives and sharp implements' left outside charity shops
Fly tipping warning from police after instances outside Crossroads