My state does not allow certain confusing characters, but I'm part of an organization which issues plates in specific violation of aforementioned character restrictions (as an added bonus the plate/organization is emblazzened with `EMERGENCY` across the bottom). ALPR camerae mis-read the plate, having applied state interpretation rules — no human outside my organization has ever read it correctly, either [0].

But of course since you cannot even see it anymore it is definitely unscannable. I can drive by speed camera without issue (i.e. no citations received; not that I regularly do, but have tested).

[0] Only once have I been pulled over, in the past decade (back when plate displayed normally), after traveling behind a cop for miles going 100mph+ through Dade County mountains. Cop: "I have no clue what agency you're with — you're plate didn't scan — but you need to slow the fuck down. You're lucky I have somewhere else to be!"