How the Railway is Signalled « Chinnor & Princes Risborough RailwayThe Railway comprises a single line between its termini at Chinnor and Princes Risborough, with an additional run-round loop at Thame Junction (just outside Princes Risborough) which for many years served as our terminus there. The line is operated to https://www.chinnorrailway.co.uk/article.php/94/how-the-railway-is-signalled