The Cumbernauld Line is a suburban railway line linking Glasgow

Glasgow

Glasgow is the largest city in Scotland and third most populous in the United Kingdom. The city is situated on the River Clyde in the country's west central lowlands...

 and Cumbernauld

Cumbernauld

Cumbernauld is a Scottish new town in North Lanarkshire. It was created in 1956 as a population overspill for Glasgow City. It is the eighth most populous settlement in Scotland and the largest in North Lanarkshire...

 in Scotland

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

. It is part of the Strathclyde Partnership for Transport

Strathclyde Partnership for Transport

The Strathclyde Partnership for Transport is a public body which is responsible for planning and co-ordinating regional transport, and especially the public transport system, in the Strathclyde area of western Scotland...

 network.

On weekdays and Saturdays, alternate trains continue towards Falkirk Grahamston

Falkirk Grahamston railway station

Falkirk Grahamston railway station is one of two railway stations serving the town of Falkirk in Scotland. It is located on the Edinburgh to Dunblane Line. Cumbernauld Line trains also terminate here. Train services are provided by First ScotRail...

.

The line is not electrified

Railway electrification in Great Britain

Railway electrification in Great Britain started towards of the 19th century. A great range of voltages have been used in the intervening period using both overhead lines and third rails, however the most common standard for mainline services is now 25 kV AC using overhead lines and the...

, but is planned to be electrified under the Edinburgh to Glasgow Improvement Programme in 2013, along with the construction of a "Garngad Chord" that would allow Cumbernauld Line services to be diverted to the North Clyde Line

North Clyde Line

The North Clyde Line is a suburban railway in West Central Scotland. The route is operated by First ScotRail, on behalf of Transport Scotland...

.http://www.networkrail.co.uk/browse%20documents/StrategicBusinessPlan/RoutePlans/2008/Route%2026%20-%20Strathclyde%20and%20South%20West%20Scotland.pdf Passenger services are operated by First ScotRail

First ScotRail

ScotRail Railways Ltd. is the FirstGroup-owned train operating company running domestic passenger trains within Scotland, northern England and the cross-border Caledonian Sleeper service to London using the brand ScotRail which is the property of the Scottish Government...

 using Class 156

British Rail Class 156

The British Rail Class 156 Super Sprinter is a diesel multiple-unit train . 114 of these units were built from 1987 to 1989 by Metro-Cammell at its Washwood Heath Works in Birmingham...

, Class 158

British Rail Class 158

British Rail Class 158 Express Sprinter is a diesel multiple-unit train, built for British Rail between 1989 and 1992 by BREL at its Derby Works. They were built to replace many locomotive-hauled passenger trains, and allowed cascading of existing Sprinter units to replace elderly 'heritage' DMUs...

 and Class 170 diesel trains.