Why should you not drive very close to the centre lane or the curb?

• It may make the traffic behind you go slow
• It may cause a traffic jam
• It may encourage other drivers to attempt to pass you in the lane
  Explanation:

  "Avoid riding too close to the centre line or to the curb since this may encourage other drivers to attempt to pass you in your lane."
• It may encourage other drivers to attempt to pass you in the opposite lane to you