Technical information
Average train speed
- 33km per hour (20.5mph) including station stops
- In central London, trains cannot reach speeds of more than 30-40mph because of the short distance between stations
- On the Victoria line, stations are wider apart and trains can reach speeds of up to 50mph
- On the Metropolitan line, trains can reach over 60mph
Maximum number of trains required for scheduled peak period service
| AM | PM |
Bakerloo line | 33 | 32 |
Central line | 76 | 76 |
Circle / Hammersmith & City line | 32 | 32 |
District line | 76 | 76 |
Jubilee line | 49 | 50 |
Metropolitan line | 48 | 50 |
Northern line | 91 | 91 |
Piccadilly line | 78 | 78 |
Victoria line | 37 | 37 |
Waterloo & City line | 5 | 5 |
Total | 525 |
527 |
Elevation
Highest point above mean sea level | Metropolitan line (beyond Amersham station) - 150 metres (500ft) |
Highest station above mean sea level | Amersham - 147 metres (490ft) |
Greatest elevation from ground level | Northern line (Dollis Brook viaduct over Dollis road, Mill Hill) - 18 metres (60ft) |
Depths
Maximum depth below mean sea level | Jubilee line - 32 metres (105ft) |
Deep level Tube lines | Maximum depths below ground level | Northern line - Holly Bush Hill, Hampstead - 68.8 metres (221ft) |
Sub-surface cut and cover lines | Maximum depths below ground level | East London line - (Wapping) - 18.3 metres (60ft) |
Central London | Deepest stations below street level | Northern line - Bank (DLR concourse) - 41.4 metres (136ft) |
Outer London | Deepest stations below street level | Northern line - Hampstead - 58.5 metres (192ft) |
Depots
Bakerloo line | Stonebridge Park |
Central line | West Ruislip/Hainault/White City |
Circle / Hammersmith & City line | Hammersmith |
District line | Ealing Common/Upminster |
Jubilee line | Stratford Market |
Metropolitan line | Neasden |
Northern line | Golders Green/Morden |
Piccadilly line | Northfields/Cockfosters |
Victoria line | Northumberland Park |
Waterloo & City line | Waterloo |
Most distant places served
Approximate distances from central London
Epping to Liverpool Street 27km (16 miles) - North |
Morden to Moorgate 16km (10 miles) - South |
Upminster to Tower Hill 25km (15 miles) - East |
Chesham to Aldgate 47km (29 miles) - West |
Distances
Longest distance between stations | Metropolitan line - Chesham to Chalfont & Latimer - 6.3km (3.89 miles) |
Shortest distance between stations | Piccadilly line - Leicester Square to Covent Garden - 0.3km (0.161 miles) |
Longest continuous tunnel | Northern line - East Finchley to Morden (via Bank) - 27.8km (17.3 miles) |
Longest journey without change | Central line - West Ruislip to Epping - 54.9km (34.1 miles) |
Length of route : Owned/managed
Single lines | 12km (seven miles) |
Double lines | 355km (220 miles) |
Triple lines | 5km (three miles) |
Quadruple lines and over | 30km (19 miles) |
Total lines | 402km (249 miles) |
Length of route: In tunnel
Sub-surface cut and cover | 32km (20 miles) |
Deep level Tube | 149km (93 miles) |
Totals | 181km (113 miles) |
Proportion of route in tunnel | 45 per cent |
Underground lines
Bakerloo line | Elephant & Castle to Harrow & Wealdstone - 23km (14.5 miles) - serves 25 stations |
Central line | Ealing Broadway or West Ruislip to Woodford (via Hainault) or Epping - 74km (46 miles) - serves 49 stations |
Circle line | Connects to most of London's National Rail termini - 27km (17 miles) - serves 36 stations |
Hammersmith & City line | Hammersmith to Barking - 25.5km (16 miles) - serves 29 stations |
District line | Upminster and Ealing Broadway to Richmond or Wimbledon, with other branches to Edgware Road and Olympia - 64km (40 miles) - serves 60 stations |
Jubilee line | Stanmore to Stratford - 36km (22.5 miles) - serves 27 stations |
Metropolitan line | Aldgate to Amersham, with branches to Chesham, Watford and Uxbridge - 67km (41.5 miles) - serves 34 stations |
Northern line | Morden to Edgware, Mill Hill East or High Barnet, with two central London branches - 58km (36 miles) - serves 50 stations |
Piccadilly line | Cockfosters to Heathrow or Uxbridge - 71km (44.3 miles) - serves 53 stations |
Victoria line | Walthamstow Central to Brixton - 21km (13.3 miles) - serves 16 stations |
Waterloo & City line | Waterloo to Bank - 2.4km (1.5 miles) - no intermediate stations |
Generating stations' installed capacity
Greenwich Gas Turbine Plant - 105MW (Megawatts) | Fuel consumption for year | 197,077 litres gasoil |
Resource use
Total electricity supplied | 1,163 (Gigawatt hours)
Percentage of energy used which is renewable: 17 per cent
Carbon efficiency: 78.9g CO2/passenger km travelled |
Energy efficiency | 143 Watts-hours/passenger km travelled |
Water used each year | 624m litres |
Recycling and waste management
Station, depot and office waste generated | 12,385 tonnes |
Station, depot and office waste recycled | 74 per cent |
Construction and demolition waste generated | 183,456 tonnes |
Construction and demolition waste recycled | 92 per cent |
Wildlife and habitats
LU manages about 10 per cent of all green spaces in London.
Wildlife observed on the Tube network | Woodpeckers, deer,
sparrowhawk, bats,
grass snakes, great
crested newts, slow worm |
Pumping systems
Number of individual pumps | 1,125 |
Number of installations | 714 |
Daily discharge | Over 47 million litres water per day - enough to fill a standard leisure centre swimming pool(25 metres x 10 metres)every 15 minutes |