Comment by AlexandrB

The insane practice was allowing "O" and "0" to be used in license plate numbers in the first place. Once you do that, you're stuck dealing with the fallout of trying to distinguish confusing glyphs at distance on a moving vehicle. Many places omit letters that can be confused like this for good reason - e.g. Ontario plates can't have the letters G, I, O, Q, and U.