Practice question

What is 'Off-tracking' (barrido de cola / diferencia de trayectoria) in a long commercial vehicle or tractor-semitrailer during a sharp corner?

  1. The vehicle drifting off the roadway due to flat tires
  2. The phenomenon where the rear trailer wheels follow a path significantly inside (tighter radius) and the rear overhang swings outside relative to the path taken by the front steering wheels
  3. The automatic speed reduction caused by transmission sensors
  4. The tire marks left when braking in a straight line

Answer: B — The phenomenon where the rear trailer wheels follow a path significantly inside (tighter radius) and the rear overhang swings outside relative to the path taken by the front steering wheels

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