Final answer:
When an oncoming vehicle doesn't dim their high beams, look toward the right edge of your lane using the white line as a guide to prevent being blinded while maintaining lane awareness.
Step-by-step explanation:
When an oncoming vehicle doesn't dim their high beams, you should look toward the right edge of your lane. This practice helps to avoid being blinded by the high beams of the approaching vehicle. You can use the white line on the road as a guide, ensuring you are not looking directly at the headlights. This also allows you to maintain awareness of your surroundings and keep your vehicle safely within the lane. Remember not to retaliate with your own high beams as it can compromise the vision of both drivers and could lead to an accident.