It takes special skill and knowledge to safely drive a heavy truck, with or without a trailer. Viewers learn the skills essential to earning commercial driver’s license. Segments of this video are dedicated to proper vehicle control; backing up with and without a trailer; how and when to shift gears including use of a tachometer, speedometer and engine sounds to know when to upshift or downshift; how to double-clutch; controlling speed when going downhill and around curves by downshifting or using exhaust, engine, hydraulic and electric retarders. While this training video focuses on techniques for maintaining control of rigs with manual transmissions, it also addresses automatic transmissions.