People often say “I waited ages for a bus and then they all turned up at once”. As the map above shows if all the timetabled buses in London literally did show up at the same time you would be stuck in an impressive traffic jam. It represents the 114 thousand or so bus trips that...

Another brilliant visualisation from UCL’s CASA, this time from Anil Bawa-Cavia.  It visualises trips made on the London Underground using data gathered from Oyster Cards. Each trail is a single trip between a known origin and destination station. Anil has guessed the route in between...