When you encounter any type of channelizing device, you should:

• Slow down and prepare to change lanes when it is safe to do so.
• Be prepared for drivers who wait until the last second to move to the open lane.
• Maintain reduced speed until you clear the construction area.
• All of the above.
  Explanation:

  "When you encounter any type of channelizing device: 1. Slow down and prepare to change lanes when it is safe to do so. 2. Be prepared for drivers who wait until the last second to move to the open lane. 3. Maintain reduced speed until you clear the construction area. There should be a sign indicating you are leaving the construction area. "