As a general reminder, making a false representation is a
criminal offence. While you do not have to incriminate yourself, you can't say that you took the wrong exit if this isn't the case. If you've been taking this route for 4 years without issue it seems implausible that you took the wrong exit, it also seems you knew about the no u-turn signs so you can't say that you missed them as you knew they were there.
With that in mind, I think you'll have to trim your representation by deleting the part before "
As this is...".
As the only purpose of this representation is to buy time, what is left will suffice.