What's the Name of That Book??? discussion

From what I remember about this book:

- A group of people are trapped inside of some type of maze or labyrinth to be studied.

-They must figure out what specific actions they are required to perform in order to be rewarded with food.

-I believe it starts out with small actions and gestures, but gradually the requirements grow to be more complex and eventually ends up as a long and complicated dance routine just for a small portion of food.

-There might be lights and noises associated with whatever prompts them to move in the required way.

-At the end of the book, I believe the main character is driving or is a passenger in a car, and when he comes up to a street light and it turns red, the red light subconsciously triggers a physical response and he begins to dance in the car.

This is the wonderful House of Stairs.

No way! Thank you so much!!!