Thousands of Greek taxi drivers lined their vehicle around Syntagma Square in cengtral Athens on Monday afternoon to protest plans to liberalize their trade.
The cabbies left the area at about 3 p.m.
The cabbies are hoping to convince the Socialist government to back down on its plan to remove all limits to the number of taxi licenses that can be issued.
Transport Minister Yiannis Ragousis has said he has no intention of re-introducing certain limits that were included in the first draft of the law by his predecessor, Dimitris Reppas.
Earlier Monday, taxi drivers blocked roads to Athens International Airport and the port of Piraeus, holding up thousands of tourists.
Prosecutor Eleni Raikou had ordered police to intervene and arrest the taxi drivers if necessary.