[Extract] The Knowledge consists of learning 320 routes or runs mapped across an area within a six mile radius of Charing Cross. Each run has a start and end point. Students of The Knowledge must not only learn the route connecting the beginning and the end of the run but a minimum of 8 points around both these sites - [totalling total of 16 per run.] During appearances – where students are called to the PCO and tested on their knowledge – potential cabbies are asked by examiners to devise a new route between two randomly chosen points. On completing The Knowledge an approximate of 30,000 streets will have been memorized as a networked configuration in the mind capable of generating a number of potential paths on demand. On arrival at run 320 the knowledge student will have travelled a total distance of 26,000 miles - the equivalent of going round the world. download pdf ['notes on the knowledge'] view scan['Knowledge Map', A-Z on acetate]