Can you, maybe, also cite a trustworthy source on how many trucks actually went through the tunnel without a problem? I imagine there're clever drivers who know

Can you, maybe, also cite a trustworthy source on how many trucks actually went through the tunnel without a problem? I imagine there're clever drivers who know precisely metrics of their vehicle and tunnel regulations. I think we rarely hear about those cases on the news, though. Edit: if you're responding “No” to whether there's leeway between actual tunnel height and regulations, I'd like to hear a source on that as well—I couldn't find one, but common sense suggests that in such a case then there'd be enough incidents of trucks with allowed height damaged because of, say, a bump on the road.