We will give you two stations along the Piccadilly Line route (west London stations, of course!), then all you have to do is answer which one comes next on the line.
So if you feel like you spend half your life with TfL, see how well you know the routes and stations along the Piccadilly Line in west London with our interactive quiz.
You can also try out our Central Line quiz here.
Share your result on social media and let's see if we can find the ultimate London Underground geek!