'The Knowledge' is the in-depth study of street routes and places of interest that taxicab-drivers in London must complete to obtain a licence to operate a black cab. It was initiated in 1865, and has changed very little ever since. It is the world's most demanding training course for taxicab-drivers; and applicants will usually need at least 12 'Appearances' (attempts at the final test), after preparation averaging 34 months, to pass the examination.
Whilst learning 'The Knowledge', would-be taxicab-drivers use the famous A-Z street maps to help them master the labyrinth of over 26,000 streets within a six mile radius of Charing Cross.
Today A-Z supplies maps to Knowledge Schools across London as folded paper, flat sheet and laminated maps so that the black cab drivers of the future can reach the high standard Londoners and visitors alike have come to expect from them.
London Knowledge Atlas
This new atlas of London is designed for use by London Black Cab drivers. There are two scales of street mapping featured in this atlas:
- Central London is covered with Super Scale Mapping at 9 inches to 1 mile
- A-Z standard street mapping, at a helpfully large scale of 4.5 inches to 1 mile
See full details in our Product Catalogue.
After the Knowledge
Once qualified, Black Cab drivers still need to keep up to date on new developments in and around the City of London. This is a daunting task, so several GPS enabled digital systems which use the latest A-Z mapping can assist the taxi drivers in their daily routine.
Each digital map continually pinpoints your location in the centre of the screen scrolling the map as you move. With comprehensive index data, it is simple to look up a street, postcode or place of interest and see its location on screen.
A-Z+ Sat Nav
The AZ+ navigation system is designed specifically with London Taxi and professional drivers in mind. Its large 5" inch screen makes it easy to view the maps and information required. Tele Atlas mapping for the UK is supplied with the device which also comes complete with the the latest A-Z Greater London street mapping and large scale city centre mapping plus London Main Road and A-Z’s Great Britain road mapping.
In addition to full street index and full UK postcode look-up, a comprehensive points of interest database is included. Safety camera alert data is also included.