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Long Description: Figure 7. Off-tracking of the Drive and Trailer Axles Rises and Falls During the Maneuver - Aerial Sketch

Figure 7 contains both a line graph and an aerial sketch of a tractor trailer on a curve. Aerial Sketch: The curves show the off-tracking of the drive and trailer axles of the control single as it drives through the bend. Both drive axles exhibit essentially the same off-tracking in this low-speed maneuver, as do the two trailer axles. The off-tracking begins at zero when the tractor is on the straight path leading to the curve. It reaches a peak in the curve, with the drive axles approximately 50 in. to the inside of the steer axle’s path and the trailer axles 244 in. from the steer axle’s path.

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