What should you do if an approaching vehicle begins to drift into your lane on a two-lane road?

When an approaching vehicle begins to drift into your lane on a two-lane road, the safest action is to steer right to avoid a collision. This maneuver gives you more space and potential escape routes while keeping you clear of the oncoming vehicle. Stepping off to the right can help create a wider margin of safety and reduce the risk of a head-on collision, which can be especially dangerous at higher speeds.

Steering left, as indicated in another option, could lead to a direct collision with the oncoming vehicle if they continue to drift. Speeding up may also exacerbate the situation by increasing the chance of a severe accident if the oncoming vehicle fails to correct its path. Honking the horn, while it may alert the other driver, does not physically help in avoiding a collision and should not be relied upon as the primary action in this scenario.