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.
These types of driver's licenses are issued by the DMV with restrictions. You can get full information about them in the Learner Permits and junior section of your state DMV website. Your state DMV website can be found here --http://www.dmv-search.com/.