You must yield to other drivers:

You must yield to other drivers when entering a street from an alley, driveway, or garage. You must also yield to pedestrians who are on an intersecting sidewalk.

• When entering a street from a garage or alley.
• When they are on a road to your left and you have reached an unmarked intersection at the same time.
• When your traffic signal is a green arrow.
• All of the above.