When a car driving uphill on a one lane road comes across another driving downhill who should back up?

When a car driving uphill encounters another car driving downhill on a one-lane road, the car going downhill should typically back up. This is because the uphill vehicle has the right of way, as it is generally easier for the downhill vehicle to maneuver in reverse. However, the specific circumstances, such as road conditions and visibility, may also influence the decision. Always prioritize safety and communication between drivers in such situations.