The first in a new fleet of electric trains has been unveiled by ScotRail.

The rail operator says the Class 385 trains will be "longer, faster and greener," delivering shorter journey times for passengers.

Transport minister Humza Yousaf revealed the first in a fleet of 24 Class 385 trains which will enter service in the autumn of 2017. A total of 70 will be on the rails by 2019.

The machines were built by Hitachi as part of ScotRail's £475m project to renew or refurbish its fleet over the next seven years.

Extensive work has already been carried out to electrify the rail network in preparation for their introduction.

They will be phased in along some of Scotland's busiest rail routes, including the Edinburgh Waverley to Glasgow Queen Street via Falkirk High line.

Services from Glasgow to Neilston and from Edinburgh to Berwick will also use make use of the new trains.

Speaking to STV News at the Shields Depot in Glasgow, Mr Yousaf said: "Once electric trains come on, we can cascade other trains across the network.

"So what we're talking about it between now and 2019, 23%, almost a quarter more additional capacity across the network.

"That's what people want, they want to be able to get a seat, to be comfortable on their trains and that's what the introduction of the Class 385 trains will mean for passengers."

Phil Verster, managing director of the ScotRail Alliance said: "This is an extraordinary programme of works that will give Scotland a railway of which we can be truly proud."