Part of the certification to be a black cab driver in London is to take a test about the streets of the city. Of course, once you pass you may use navigation ap

Part of the certification to be a black cab driver in London is to take a test about the streets of the city. Of course, once you pass you may use navigation apps. https://www.nytimes.com/2014/11/10/t-magazine/london-taxi-test-knowledge.html https://www.nytimes.com/2014/11/10/t-magazine/london-taxi-te...