[US] Why are there two standard license plate numbering/lettering conventions?

Question

I’ve noticed that, at least in my state, two license plate types are commonly used. For reference, # represents a number and L represents a letter. One, with #LLL### is used mostly with consumer vehicles. The other, #####L#, is primarily used with either corporate/work vehicles, or vehicles that could be used for those purposes like pickup trucks, vans, etc. Why is this?

EDIT: This is regarding California, by the way. I didn,t realize it was state-specific, and I don’t travel enough to have noticed, my bad.

In: 0

Answer 1

There is more than 2.

Oregon uses LLL ### or ###LLL

Each state does their own th ings.