of their Great Northern Route. A mix of Express, Fast and Stopping services are provided on the line including services through Central London to and from Brighton. An alternative route via the West Anglia Main Line links to now provides mainly stopping services though some peak hour trains stop only at Tottenham Hale and Audley End. Infrastructure The line is double track throughout. Traction current is supplied at 25 kV AC using overhead line equipment overseen by York Electrical Control Room, with Neutral Sections at Cambridge junction, Litlington and Shepreth Branch Junction. It has a loading gauge of W8 and a maximum line speed of 90 mph. Route boundary and signalling Just under a mile to the east of Royston station lies the boundary between the Network Rail London North Eastern Route and Anglia Route. All signals between King's Cross and this point are controlled by Kings Cross Power Signal Box, whilst those from here to are controlled by Cambridge Signal Box. The signalling system for the whole Cambridge line is Track Circuit block, with all main signals being multiple-aspect colour light signals. Stations In order from southwest to north. Passenger volume These are the passenger usage statistics on the National Rail network from the year beginning April 2002 to the year beginning April 2010. Comparing both years, Cambridge has increased by nearly 51%, Foxton by 57%, Shepreth by 99%, Meldreth by 41% although it has declined in recent years until this point, Royston increased by 28%, Ashwell and Morden by 30%, Baldock by 50%, Letchworth Garden City by 33% and Hitchin by 44%. References Railway lines in the East of England Hitchin Rail transport in Hertfordshire Rail transport in Cambridge Rail transport in Cambridgeshire