The sign you are referring to indicates a traffic lane with oncoming traffic. This sign means that the road has two lanes going in your direction and one lane for oncoming traffic.

Drivers should be cautious as they will encounter vehicles coming from the opposite direction. This sign is important for maintaining safe distances while driving and encourages you to stay within your lane, especially around curves or hills where visibility may be limited.

It's essential to remain alert for traffic conditions and exercise good judgment when passing or making maneuvers in such situations. Ensure you follow all other traffic rules and regulations when driving in these lane configurations.