// Bad Design is Everywhere //
As all computer and typography minded people know, there are a few characters in the Roman alphabet which closely resemble one another: O's and 0's, 1's and I's, and so on. What I can't believe is how the people designing the state freaking license plates didn't choose to avoid this situation. At a glance, there's no way to know whether this plate features a zero, then an o, or an o before a zero.
Now, typically, the zero is the thinner version of the two, but best practice usually means either using a zero with a diagonal running through its width, OR doing away with one of the characters in the system all together if possible. In the case of license plates, the former option would work well and the latter option would work even better.
Based on the plate above, you might be thinking that Colorado plates solve this problem by designating the first set (of three characters) as letters and the second set as numerals, but this is not the case. These sets of numerals and letters are completely interchangeable across all the license plates in use.
Since most scenarios involving license plates require speed and precision, there really is no margin for error.