Why should you not move into the space in front of a large vehicle that is approaching a traffic light?

• If the traffic light changes to red, the driver may need that extra space in front of the vehicle for stopping and may not have enough room if another vehicle moves in front.
  Explanation:

  "Never move into the space in front of a large vehicle that is approaching a traffic light. If the traffic light changes to red, the driver may need that extra space in front of the vehicle for stopping and may not have enough room if another vehicle moves in front."
• If the traffic light changes to red, the driver may need that extra space in front of the vehicle for stopping and may have enough room if another vehicle moves in front.
• If the traffic light changes to red, the driver does not need that extra space in front of the vehicle for stopping and may not have enough room if another vehicle moves in front.
• None of the above.