"Lu" is Shandong Province, "L" is Rizhao City, and the first letter of the serial number after B is.

In principle, for non-self-selected personalized license plates, the five-digit serial numbers will be issued in numerical order starting from 00000 until 99999. If the number exceeds this number, English letters will be used as the prefix, starting from A0000 to A9999. Then proceed from B0000 to B9999, and so on to Z9999.

If the 2.6 million numbers are full again, there are two ways to continue the numbering:

1. Put the English letters in the second position and arrange them from 0A000 to 0A999. Then 1A000 to 1A999, and so on to 9Z999.

2. The first two characters use English letters, from AA000 to AA999, then to AB000-AB999, and so on to AZ999, starting with BA000-BA999, BB000-BB999, and extending all the way to ZZ999.

If the number is still full, then the English letter will be used in the third position.

Extended information:

Lu A: Jinan, Lu B: Qingdao, Lu C: Zibo, Lu D: Zaozhuang, Lu E: Dongying, Lu F: Yantai, Lu G: Weifang, Lu H: Jining;

Lu J: Tai'an, Lu K: Weihai, Lu L: Rizhao, Lu M: Laiwu, Lu N: Dezhou, Lu P: Liaocheng, Lu Q: Linyi, Lu R: He Ze, Lu U: Qingdao Development Zone.

The current civilian license plate is Type 92, which has been used nationwide since July 1994.

The first character on the license plate is a Chinese character: it represents the provincial administrative region where the car’s registered residence is located, which is the abbreviation of each (province, municipality, autonomous region), for example: Beijing is Beijing, Shanghai is Shanghai, and Hunan is Hunan. Chongqing is Chongqing;

The second digit of the license plate is an English letter: representing the prefecture-level administrative region where the vehicle's registered residence is located, which is the letter code for each (prefecture-level city, region, autonomous prefecture, league), according to the provincial vehicle management Therefore, the status of administrative regions at various levels is divided and ranked: (the letter "A" is the code of the provincial capital, capital or central city directly under the central government, and the subsequent letters are ranked in no particular order);

In addition, the English letters of prefecture-level administrative regions are arranged When coding, skip I and O. O is often used as a police car or agency unit.

Reference: Baidu Encyclopedia-License Plate Number

Reference: Baidu Encyclopedia-License Plate