High Quality Content by WIKIPEDIA articles! The Lynton Barnstaple Railway (L B) opened as an independent railway in May 1898. It was a single track narrow gauge railway slightly over 19 miles (31 km) long running through the rugged and picturesque area bordering Exmoor in North Devon, England. Although opened after the 1896 Light Railways Act came into force, it was authorised and constructed prior to that act. Therefore, as with all other railways, it was authorised under its own Act of Parliament and built to higher (and more costly) standards than similar railways of the time. In the United Kingdom it was notable as being the only narrow gauge line required to use main-line standard signalling.