When encountering mail, delivery, or trash-collection vehicles stopped on the road, what should you do?

• Speed up to pass them quickly.
• Proceed with caution and change lanes if possible.
  Explanation:

  "Mail, delivery, and trash-collection vehicles often make frequent stops in the roadway. Drivers must proceed with caution, and, if possible, change lanes before safely passing one of these vehicles on the road."
• Honk the horn to alert the drivers of those vehicles.
• Ignore them and maintain the current speed.