When should you allow the bus to re-enter traffic?

• When you are approaching a bus from the lane adjacent in the bus bay flashing its left turn signals
  Explanation:

  "When a bus in a bus bay begins flashing its left-turn signals, indicating that it is ready to leave the bus bay, and you are approaching in the lane adjacent to the bus bay, you must allow the bus to re-enter traffic"
• When the bus is flashing its right lane signal
• When the bus has left the bus bay and is merging with traffic
• All of the above