What should bicyclists do before entering a roadway from a driveway, an alley, or when crossing over a curb?

• Come to a full stop before entering the roadway
  Explanation:

  "Bicyclists must come to a complete stop before entering the roadway from a driveway, an alley, or when crossing over a curb."
• Speed up to quickly merge with the traffic
• Signal with their horn to alert other road users
• Slow down and proceed cautiously