This course will develop a basic understanding of the fundamentals of operation and explain the current state-of-the-art design of the modern transmission designs. Transmission systems in current production will be used as a practical example throughout the seminar. Two basic product areas of truck and off-highway transmission systems will be reviewed: Planetary Automatic Transmissions, and Power-Shifted Transmissions. The functional requirements of the "current" market and the operational needs of its drivers will drive the course. Course material will be presented in the chronological order in which it was introduced into the marketplace.