This red and white sign means you should:

Question

A three-sided yield sign indicates that you must slow down and be ready to stop, if necessary, to let any vehicle, bicyclist, or pedestrian pass before you proceed. In this case, you do not have the right-of-way.

Accepted Answer

Give the right-of-way to traffic on the road you wish to enter or cross.

Answer

Stop and check for traffic coming from both directions before proceeding.

Answer

Maintain a steady speed and check for traffic coming from all directions.