One-way system must be observed
Don't trust satellite navigators mapping routes across the Mountain Road during TT - that's according to the Isle of Man Constabulary.
The one-way system is in place until the festival comes to a close.
Police say sat navs typically won't show the change.
Last year, a number of drivers were prosecuted for driving in the wrong direction on between the Ramsey Hairpin and the Creg-ny-Baa.
Inspector Gavin Callow says it's pivotal everyone's on the same page:
Person dies following road traffic collision at Hillberry
Police provide update after incident closed roads in the area
Contractors to start installing 20mph signs in Douglas and Onchan
Infrastructure Minister confirms work will start next week
Accessible bus stops rolled out across Bus Vannin network
Department of Infrastructure says upgrades will make travel easier for wheelchair and mobility scooter users
Road closures in place following incident in Hillberry area
Police response ongoing with Little Mill Road, Cronk-ny-Mona and Creg Ny Baa affected