The question bank for license exam is around 1000 questions. Including the law and fines.
If its just road sign then it is definitely passable with common sense. but with law included? fines?
Good luck passing the exam. you only have 10 or 12 mistakes allowed to get the passing score.
It needs a week of scanning the reviewer to get confident enough. At least that’s what I did to pass the exam 1st time.