this post was submitted on 22 Apr 2025
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Mildly Interesting
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I wonder what the practical reason is for not just allowing full alphanumeric number plates. Each digit would then have 32 possibilities (I, O, Z, and S should be avoided to prevent confusion with 1, 0, 2, and 5). This gives 34.36 billion possible number plates which seems sufficient for at least the next couple years.
The confusion can be avoided with the right font. It works fine in the EU afterall
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In the US, number plates are in Highway Gothic which is designed to maximise legibility at a distance.
https://en.wikipedia.org/wiki/Highway_Gothic?wprov=sfla1
That's ironic. Few countries have less readable plates.
Harder to remember than if they group letters and numbers.
Right now remember 1 digit that’s usually 8 or 9, then 3 letters and 3 numbers So 8WTF420 is easier to remember than WT842F0.
I guess that's true but number plates are typically read by cameras anyway. They are primarily used by speed/red light cameras, toll collection systems, and law enforcement.
If you assign random numbers to cars, it's pretty likely that the last four or five digits plus the make and model of the car will uniquely identify a vehicle or at least narrow it down to just a few possibilities. If the assignment software is smart it could probably even guarantee this uniqueness.