Edinburgh's tram line has been put to the test as contractors ran a tram at full speed along a section of the track.
Transport minister Keith Brown watched the trial of the 2.8km (1.7 miles) stretch before it is handed over to the council in March.
The tram project, which has been hit by rising costs and a contractual dispute, is due to begin service in the summer of 2014 when passengers will be able to travel on a single line from Edinburgh airport to York Place at the east end of Princes Street.
The tram's top speed is 43mph. City of Edinburgh Council transport convener Lesley Hinds also watched the test from the Gogar Farm Crossing.
She said: "It's hugely encouraging to see an Edinburgh tram running at full pace and it's a tangible sign of just how far this project has come since mediation last year.
"Much progress has been made in 2012, with bridges built, tram stops completed, miles of track laid and, most importantly, the project remains on track to hit the revised budget and timeframe. We are now nearing later stages of this most challenging of projects.
"I want to assure people that every last element of it is being closely managed by the project team - everyone involved is ready for this next crucial year as we drive hard towards completion."
Mr Brown said: "The good progress made since the contractual disputes were resolved last year is now hopefully clear for all to see.
"While the project has caused disruption for some people in Edinburgh, their patience is starting to pay off. I was heartened today to see the project taking shape and Transport Scotland is now playing a key role in overseeing the delivery."
The council approved a revised budget for the project of £776 million in September last year.