What should you do if an oncoming driver has their high beams on?

• Switch to your high beams too.
• Ignore it and keep driving as you are.
• Flick your headlights to signal the driver to switch to low beams.
  Explanation:

  "When facing an oncoming vehicle with high beams, it's a good idea to flick your headlights briefly as a polite reminder for the driver to switch to low beams. If they don't make the switch, it's best to stay to the right and avoid using your high beams, which could further impair both drivers' vision."
• Flash your high beams to tell the driver to maintain their high beams.