What is the minimum safe following distance behind the vehicle in front of you?

• 2-second distance
  Explanation:

  "You should maintain a minimum 2-second following distance behind the vehicle ahead in ideal driving conditions. This allows enough time to react if the vehicle in front suddenly slows down or stops. In poor weather or hazardous conditions, increasing the following distance is recommended for added safety."
• 3-second distance
• 4-second distance
• 5-second distance