24 semester units (or 36 quarter) in accounting (educational requirements vary, contact State Board for specific details) and. 24 semester units (or 36 quarter) in business-related courses (educational requirements vary, contact State Board for details)
ATD, a division of NADA, is the recognized voice of commercial truck dealers and their premier source for advocacy, industry relations, and education. ATD membership is integral to dealers' business.
Variable Frequency Drive (VFD) A Variable Frequency Drive (VFD) or adjustable speed drive is a motor controller device that runs an electric motor by varying the voltage and frequency supplied to the electric motor. VFDâs are also known as AC drives or microdrives since they control the speed of a motor, generally a three phase motor.