Illinois license plate: Trailer semi
Issued today 1999 to today. Trailer plates, issued by Illinois Secretary of State, Vehicle Services Department. One of 8 Illinois license plates.
Format, years and the law
- Format
-
9999 ST, for example1204 ST(9 any digit)The format above follows the issuing rules: a registration that fits it is one this series could have issued.
- Years issued
- 1999 to today. Still issued.
- Vehicle class
- Trailer: trailers and semi-trailers where separately serialized. Issued for trailer.
- How numbers are issued
- observed 1 S/T to 1032416 S/T (secondary)
Legal basis and sources
- 3-412(a): one plate for a trailer or semitrailer https://codes.findlaw.com/il/chapter-625-vehicles/il-st-sect-625-5-3-412.html
- 3-413: trailers display at the rear only https://codes.findlaw.com/il/chapter-625-vehicles/il-st-sect-625-5-3-413.html
- en.wikipedia.org https://en.wikipedia.org/wiki/Vehicle_registration_plates_of_Illinois
- the stacked-character rule the ST reading rests on https://www.aamva.org/getmedia/646bcc8a-219b-47d8-b5cd-726240473163/License-Plate-Standard-Edition-3_September-2025-U...
This plate in your app
The series id is us-il-trailer-semi. The API returns its format, validation, colours and designs with the rest of Illinois's series:
curl -s https://vehiclesdb.com/api/v1/plates/us-il \ -H "Authorization: Bearer $VEHICLESDB_API_KEY" \ | jq '.series[] | select(.id == "us-il-trailer-semi")'
- Plate image (SVG, sample serial): https://vehiclesdb.com/plates/us-il/us-il-trailer-semi.svg
- Blank template, filled on your side: https://vehiclesdb.com/plates/us-il/us-il-trailer-semi/template.svg
