What should you be aware of when approaching a blocked or narrow road?

• You might feel sleepy due to driving slowly.
• The vehicle ahead may stop or slow down unexpectedly to view the scene.
  Explanation:

  "When approaching a blocked or narrow road, be aware that the vehicle ahead may stop or slow down unexpectedly as drivers often reduce speed to assess the situation or view the scene. "
• The driver in front of you may feel sleepy driving so slowly.
• Continue driving at the same speed without any concerns.