The Mountain Road is one way from Ramsey to Douglas for the duration of TT fortnight.
It was introduced at the Centenary TT in 2007, to try and eradicate head-on collisions.
Inspector Terry Stephen of the Roads Policing Unit says despite the change, people still need to drive and ride responsibly up there:
May sentence for man who threatened to stab neighbour
48-year-old told him: "I'm going to slice your head in"
Evidence sought for Area Plan inquiry
Two-week public hearing to take place in July
Traffic lights in operation by Palatine Health Centre
Urgent road repairs will be carried out today and Monday
Disruption at Ronaldsway airport following incident with light aircraft
Passengers told to expect disruption as flights are delayed or cancelled
Hopes for better working relationship between government and hospitality sector
Follows private talks in what's described as a 'call to arms' meeting
'A lot of work to do' on low income housing
Chief Minister says facts are urgently needed
