Pi is the sixteenth letter of the Greek alphabet, representing sound. In the system of Greek numerals it has a value of 80. It was derived from the Phoenician letter Pe (). Letters that arose from pi include Cyrillic Pe, Coptic pi, and Gothic pairthra ().
The 3 types of commercial drivers are Class A, B, and C licenses. 1  Class A Commercial Driverâs License â Combination Vehicle permit holder can drive all commercial vehicles or a combination of commercial vehicles with a gross weight of 26,001 lbs. or more.
Illinois driver's license classifications are Class A, B, C D, L and M, based on the weight and number of wheels of the vehicles. It also depends on whether the driver will be hauling hazardous materials or towing trailers. Commercial driver's licenses in Illinois are Class A, B, C, or some combination, in accordance with Federal CDL guidelines. A CDL is usually required for school bus, child care vehicle and commuter vehicle permits and for vehicles transporting members of a religious or senior citizen community.