cannot be 0) XYZ 1JK4 (neither digit can be 0) XYZ JK34 XYZ 12345 XYZ 1234J XYZ 123JK The number of available unique numbers with these mentioned formats is 1,100,000 for each two-letter powiat code, and 872,400 for each three-letter powiat code. Note that the combinations "XYZ 1234" and "XYZ 123J" are not used, because they would lead to creation of numbers identical to these in the old system. Also, the two-letter powiat codes must be followed by a leading digit, "XY 1...", to avoid confusion with the "XYZ ..." scheme, as the gap is not significant. Electric vehicles have green background on their license plates. Motorcycles, mopeds, and agricultural vehicles Format: XY 1234 XY 123J XY 1J34 (first digit cannot be 0) XY 12J4 (last digit cannot be 0) XY 12JK XY JK12 XYZ J234 XYZ 12JK XYZ 1J34 (first digit cannot be 0) XYZ 12J4 (last digit cannot be 0) XYZ 1JK4 (neither digit can be 0) XYZ JK34 XYZ J23K XYZ J2KL (a digit cannot be 0) Cars – reduced size Format: X 123 X 12J X 1J2 X J12 X 1JK X JK1 X J1K The plates are designed for cars from USA. Reduced size plates are the same width as US plates. Classic cars Format: XY 12J XY 123 XYZ 1J XYZ 12 XYZ J1 These plates use black text on a yellow background with an additional picture of a vintage car on the right side. Only cars older than 25 years, out of production for 15 years and containing at least 75% of original parts are eligible to be registered as classic cars, with an exception of prototypes that were never produced, cars of considerable historical value or "being an example of original or important technological solutions". These plates are issued on a case by case rules. Temporary and export plates Format: X1 2345 X1 234J These plates use red text on a white background. The plates wear a seal with month and year of validation. The windshield plaque is not issued with it. Electric car plates Introduced on 1 January 2020, they are issued to battery-electric and hydrogen vehicles. They are similar to regular plates but the background colour is light green instead of white. Testing vehicles Format: X1 234 B These plates use red text on a white background. The windshield plaque is not issued with it. The last character is always