The Department of Infrastructure is urging motorists not to ignore the one-way system on Market Street in Douglas.
It says it's received reports of drivers ignoring the order since the stretch re-opened earlier this year, and in one instance a car drove through whilst DOI staff were carrying out work there.
According to officials, police are paying 'particular attention' to the situation and are taking enforcement action where necessary.
Teams have been out line painting and installing 'No Entry' signs to reinforce the message
Politician's anger over Post Office profits and cutbacks
Number of post offices to temporarily close for a day
Minister says she can't provide update on NSC floor tiles
Afternoon ferry is next to be cancelled by weather
Difficult to compare Island's Hospice funding with UK, says minister
Mountain Road to close because of gales
New amber warning issued for tonight's storm
Police appeal over theft of building materials