Transport in Glasgow to the M80 at Provan is scheduled for completion in 2014. Glasgow is one of only three British metropolitan areas that has an underground metro system; the others being London and Newcastle. The Glasgow Subway (previously "Glasgow Underground"), was built in 1896 and substantially modernised in 1977. It has a single circular route. This, taken together with the orange-coloured paintwork of the carriages, has led to it being known, by guidebooks more than the locals who still refer to it as the "Subway", as "The Clockwork Orange" after the 1971 film. Despite being the third oldest subway system in the
London Underground carriages London Underground carriages The London Underground opened in 1863 with gas-lit wooden carriages hauled by steam locomotives. The Metropolitan and District railways both used carriages exclusively until they electrified in the early 20th century. The District railway replaced all its carriages for electric multiple units, whereas the Metropolitan still used carriages on the outer suburban routes where an electric locomotive at the Baker Street end was exchanged for a steam locomotive en route. The City & South London Railway tube railway opened in 1890 with electric locomotives hauling three carriages. Originally only provided with small windows, these were soon nicknamed