Can American license plates be scribbled with letters?

The license plate number in the United States is much more complicated, and it looks messy and disorganized. There is no uniform rule for letters and numbers, but all kinds of license plates have different colors. Civil license plates must be marked with the name of the state, and commercial vehicles have obvious signs (some roads, such as Park Road, are not allowed to pass by commercial vehicles). Some only have letters without numbers, some only have numbers without letters, and some are mixed; A dozen numbers (or letters). The fine print on the American license plate is the name of the state, which is divided into two parts. Car owners can arbitrarily combine car numbers according to their own requirements, such as arranging their names with pinyin abbreviations or anniversaries that have special significance to them.