Really nice! Are you planning to port the game for Android / iOS? It would be great to play this game on the phone.
And I would add graphics. The road and the cars are great! But the menu is boring and too static. Also, in the accident there is no illustration. I would add a cool illustration where cars crashed into an accident, the police are standing with flashing lights, and would also add animation to this scene (flashers). The idea is interesting, but it requires improvements (IMHO).