Illinois Class L application Instructions are the instructions for completing the Illinois Class L License application. The Class L license is a type of driver's license that allows individuals to operate a motor vehicle with a Gross Vehicle Weight Rating (OVER) of 8,001 pounds or more, or a combination of vehicles with a Gross Combination Weight Rating (GCR) of 11,000 pounds or more. A Class L license is required for those who wish to operate commercial vehicles, such as tractor trailers, buses, and semi-trucks. There are two types of Illinois Class L application Instructions. The first is the General Instructions for completing the application, which includes information on the application process, the required documents, and the applicable fees. The second type is the Commercial Driver's License Application Instructions, which provides detailed instructions on how to complete the application and the steps required to obtain the Class L License.