https://www.theguardian.com/technology/2018/feb/21/citymapper-launches-bus-taxi-hybrid-smart-ride-london-transit-app

Exclusive: transit app firm says new service has stops like a bus, is bookable like a cab and runs on a network like a tube train

London-based transit app Citymapper is today launching Smart Ride, a hybrid bus and taxi service that will take riders around a fixed network in the capital.