What should you do after passing through the truck that causes air turbulence?

• Lean in the similar direction of the wind
• Lean in the opposite direction of the wind
  Explanation:

  "After you pass through the first blast of turbulent air coming off the back of the truck, you will feel a stream of air either pulling you toward the truck or pushing you away from it, depending on wind direction. Lean away from the truck if the wind is pulling you toward it, or lean toward the truck if you are being pushed away."
• Grip firmly and try to stop
• Grip firmly and increase your speed