The I-PASS system is an electronic method of collecting tolls. This system was first launched in 1993 and was put into use by the Illinois State Toll Highway Authority on toll roads throughout the state. A transponder is used to allow cars to pass through tollbooths without having to slow down. Travelers that do not use this system must stop and pay cash at a traditional tollbooth. Travelers that use the I-Pass system will receive a discounted rate.
Drivers without an account or with insufficient funds in their account may be fined. Multiple violations and failure to pay tolls and fines will result in suspended driver's licenses or license plates. Because the same transponder for I-PASS is used for the E-ZPass System, all toll roads that accept E-ZPass also accept I-PASS. Sixteen states use the E-ZPass system and also accept I-PASS.