How to limit the number of license plates with letters at the end?

In most areas, the tail number of the license plate is a letter, which is treated as the last 1 bit. For example, Zhejiang A 1234Q, then the tail number is 4. Zhejiang A 123QQ, then the tail number is 3.

In some areas, the tail number of the license plate is a letter, which is treated as the number 0. For example, Beijing.

So check the local restrictions to prevent you from violating traffic rules without knowing the rules.

Tail number restriction system is a kind of traffic system born to alleviate the urban traffic pressure. During the test match of the 2007 Beijing Olympic Games, Beijing began to restrict even and odd numbers. On odd days, only private cars with odd numbers and even numbers can go on the road, and on even days, only private cars with even numbers and even numbers can go on the road.

References:

Baidu Encyclopedia-suffix restriction