I'm not sure if the itv conforms to anything concrete.
I once took a car to the itv in which two tyres were in my opinion on the limit. That aside the car was in good order and I just wanted to get it checked over for any other problems. Deep down I felt it could fail on poss 1 tyre but I planned to change two tyres anyway.
I was surprised it passed! in the uk I think 1 tyre would have possibly failed
With my experience I had tints installed in a car to keep the heat and glare out, I to paid a fair amount of money.
I took the car for the itv to be told fail! because of the tints. Option only was to take it off and he knew a man who could 'funny that' the tints in question were not black out.
I was a little annoyed about it to say the least, so I took a gamble and drove to another itv station in another area. Guess what? it passed...
Conformity, they dont know the meaning
Good luck and happy driving