Edinburgh's stop-start tram project picked up pace with the first full speed test run.
Contractors successfully ran an Edinburgh Tram at 43mph as part of the process to ensure the system is ready for service in summer 2014.
The tram runs and system tests are the final part in the development of this section of the route.
The mile-long stretch will be handed over by contractors to the council in March following testing and commissioning.
Transport Minister Keith Brown and Edinburgh Transport Convener Lesley Hinds watched the tram test take place from the Gogar Farm Crossing.
Mr Brown said good progress had been made since the contractual disputes that halted the project were resolved last year.
He said: "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.
"It will also bring major benefits for the rest of Scotland's transport network.
"The Airport tram stop, combined with the Edinburgh Gateway rail-tram interchange, refurbished Haymarket Station and existing station at Edinburgh Park, will provide better links and more options with the rail network, Edinburgh Airport and other key transport hubs."
Ms Hinds 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.
"On-street works in the city centre will continue next year of course, but we are doing everything possible to limit disruption. Our team will stay in close contact with residents and businesses so they have the information they need to limit the impact of the works.
"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."
The tram project remains in line with the revised budget of £776m.
Passenger services are expected to run by summer 2014 and it is anticipated that full route tram testing will take place from Edinburgh Airport to York Place in late Spring 2014.
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