Well 16 people seem to agree with me and 2 with you, the game was made so you don't hit the ceiling in a tunnel whenever you are a good driver, such as myself. You need to practically stop to avoid this crash which ruins your speed, to add to this its the only map I know which requires you to reset at a checkpoint just to post a time. All in all, rubbish and I'm happy its already been removed.
You need to slow the fuck down on that section anyway, canyon actually requires you to use your brakes which a lot of French people don't understand.