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.
1 Unrestricted Licenses are driver's licenses that most American drivers have in order to drive. 2  Various states differ on what class they utilize to distinguish between a typical driver's license and special licenses, such as restricted, chauffeur, or motorcycle licenses.