How the numbering works
Each of the 26 cantons runs independent sequences for ordinary vehicles and again for the different colour and special categories.
Two canton letters precede a serial normally containing one to five or six digits; seven-digit numbers became legally possible in 2026 for future capacity.
The long rear plate places the Swiss shield at left, then the canton code, a separator dot and the number, with the canton coat of arms at right.
The 300 × 80 mm front plate has neither coat of arms nor separator dot; the alternative 300 × 160 mm rear stacks the canton identity above the number.
The plates belong to the keeper and may move to a replacement vehicle; moving residence to another canton requires registration in the new canton.