Traffic restriction began in Piraeus on Monday as work began to extend the tram line to the port.
Drivers are advised to follow the diversions put in place by authorities. The work on the tram extension from the Peace and Friendship Stadium (SEF) in Neo Faliro is scheduled to last until October 2016.
Work is also underway on the extension of the metro to Piraeus.
The traffic diversions will also affect bus routes and cause delays. Travelers, especially those with ferry tickets, are advised to allow ample time before their scheduled departure.