Ideally speaking it should be played by four-to-six players, but I can't see any reason why we can't 'play' on our own. Ok, if you play on your own you will be revising modal verbs, but you might be killing all the fun.
Before we play, we must get familiar with the game by reading the rules. The rules page will give us access to all the other components of the game:
You need a driving licence that you can download if you wish.
You need to get acquainted with the road and traffic vocabulary as well as with the modal verbs. You can do all this from here, with the added bonus that there is and audio file for each of the vocabulary items, which will enable you to get the pronunciation right.
Finally, you are given the solutions to all the questions in the game.
So it doesn't matter whether you are on your own, or with a group a friends, or you are a teacher with a whiteboard or a computer room at your disposal. Highway code will help you revise your modals in a funny way.
