A nine-car Azuma from Edinburgh has become the first train to stop at Reston in 58 years.
National operator LNER arranged the special service to Berwickshire to allow a series of safety checks to be carried out ahead of the station's reopening.
Onboard was a specialist team onboard who had just 15 minutes before the train had to depart to avoid holding up other trains on the busy East Coast Main Line.
As part of the validation exercise, as it is known in the rail industry, multiple compliance checks are necessary before passenger services can call at any newly built station.
These measures include checking the physical stepping distances between the train and platform for all 18 passenger doors, as well as to confirm that other access and sighting requirements have been satisfied from a customer, driver and onboard perspective.
John Doughty, Engineering Director at LNER, said: “A lot of work from a number of teams across LNER goes into station platform and train interface safety validation. A time, agreed with Network Rail Scotland, and a train must be secured for the exercise, and a specialist team qualified to carry out the compliance checks.
“These exercises, though short, are incredibly important, as they relate to the safety and accessibility of our customers and colleagues as well as ensuring a smooth introduction to services at new stations. We will continue to work behind the scenes in preparation to serve Reston later this year.”
Although exact timings are to be confirmed, LNER is expected be the first and last train service each day to stop at Reston which is located approximately 50 miles south of Edinburgh Waverley.
Meanwhile, Scottish Borders Council leader Mark Rowley says it's "shameful" that no ScotRail trains are planned to serve the station - despite the investment in the new stop in an area previously starved of public transport.