JACKKNIFING IN TRUCKS

The rig jackknifes when the drive axle brakes lock up. From the Feature Picture: Figure 1. If you lock the steering axle brakes, the rig will move straight ahead regardless of the wheel angle. Figure 2. If you lock the drive axles, the rig will jackknife. Figure 3. If you lock the trailer axles, you will get trailer swing. Case […]

Continue reading »