Signalling and Infrastructure
The Esk Valley line still uses a physical token system, modified so that train drivers operate the token instruments themselves (the system of working is known as No Signalman Token Remote and is used on other routes such as the Heart of Wales Line and the Tarka Line). Cabinets at Whitby, Glaisdale and Battersby and a signalman at Nunthorpe pass on key tokens to train drivers as authority to occupy specific line sections, ensuring that only one train can run on a section at a time. Until the mid 1980s, the line from Whitby to Sleights had two tracks, but these were removed along with the passing loop at Castleton. Trains can still pass at Glaisdale and Battersby, although Glaisdale is now the only station along the single track section that still regularly uses both platforms for "up" and "down" line trains. Between Nunthorpe and Guisborough Junction, the railway has been single track since 26 January 1986, although Nunthorpe retains its loop with separate "up" and "down" platforms. This section is worked from the panel box at Middlesbrough and uses track circuit block working.
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