Illinois Class 8 application Instructions refer to the process of applying for a Class 8 license in the state of Illinois. This type of license is required for operating any vehicle designed to transport 16 or more passengers, including the driver. There are two types of Illinois Class 8 application Instructions: one for first-time applicants and one for applicants who have previously held a Class 8 license. For first-time applicants, the process begins by obtaining a copy of the Commercial Driver's License (CDL) Manual, which includes information about the application process. After reading the manual, applicants must take a written knowledge test and pass it in order to obtain their permit. With the permit, applicants can then complete a medical exam and obtain a Commercial Learner's Permit (CLP). After completing the CLP, applicants must then take a driving skills test and pass it in order to obtain their Class 8 license. For applicants who have previously held a Class 8 license, the process is slightly different. Applicants must first obtain a CDL Manual and then take a written knowledge test. After passing the written knowledge test, applicants must then complete a medical exam and obtain a CLP. With the CLP, applicants can then take a driving skills test and pass it in order to obtain their Class 8 license. In both cases, applicants must be at least 18 years of age and have a valid driver's license. Applicants must also pass a vision screening and provide proof of identity and residence. Additionally, applicants must provide proof of a valid Social Security number.