625 ILCS 5/3-814
Effective with the 1984 registration year to the end of the 1998 registration year, an owner of a semitrailer shall pay to the Secretary of State, for the use of the public highways of this State, a flat weight tax of $60, which includes the registration fee, for a 5 year semitrailer plate.
Effective with the 1999 registration year an owner of a semitrailer shall pay to the Secretary of State, for the use of the public highways of this State, a one time flat tax of $15, which includes the registration fee, for a permanent non-transferrable semitrailer plate.
Effective with the 2001 registration year, an owner of a semitrailer shall pay to the Secretary of State, for the use of public highways of this State, a one-time flat tax of $19, which includes the registration fee, for a permanent non-transferrable semitrailer plate.
625 ILCS 5/3-814