Bobtailing and Jackknifing program explains what "Bobtailing" a tractor is and why it's dangerous. Also explains the basics of braking and different ways braking can affect the trailer and cause it to "Jackknife." Bobtailing is sometimes necessary but a dangerous method of driving a big rig tractor without any trailing component. Once you get past the profile, weight dynamics and engine power of the tractor, now you add the brake system, weather, traffic conditions, driver fatigue and attention to the road. Key Words: Bobtailing, Jackknifing, Basics of Braking, Big Rig Tractor, Weight Dynamics, Engine Power, Weather, Traffic, Driver Fatigue, Safety Video, Safety Training, Safety DVD. Runtime: 8 Min. WITH PURCHASE OF ANY ENGLISH VHS OR DVD YOU WILL RECEIVE A FREE WRITTEN MATERIAL CD-Rom. The CD-ROM of written materials may include: Leaders Guides, Questions & Answers, Manuals, and Power Points. Contents vary depending on program.