[tpetricek]

The article uses TfL signage from Kings Cross as an example of clear and crisp direction. This is a bit funny, because Kings Cross signate (specifically) sometimes directs you to take a longer path (hoping to avoid overcrowding in peak times). In some cases, you're better off going in the very opposite direction.

[Freak_NL]

That's often fine though. If you are at an unfamiliar station with lots of exits and paths, the least congested, go-with-the-flow path is usually the least bother. Once you get to know a place you can vary based on personal experience and willingness to brave sections where you'll be going against the flow of pedestrians.