TfL flows

Flow which decides how to get to the London Natural History Museum using tfl-underground and function nodes

https://gist.github.com/hbeeken/85fbf6228e203bcfd026

Flow which decides whether to go to Acton from Hyde Park using the bus or the underground. If the weather is good, the bus is preferred, if the weather is bad, the underground is preferred. If the weather is bad and the underground is not running, then we travel with a taxi and don't consider the bus as an option.