Final answer:
Drivers must be cautious and yield to other vehicles and pedestrians when emerging from an alley, driveway, or private road on a business or residential district.
Step-by-step explanation:
When emerging from an alley, driveway, or private road on a business or residential district, drivers must be cautious and yield to other vehicles and pedestrians on the main road. They should stop and look for any oncoming traffic, pedestrians, or bicyclists before proceeding onto the main road. It is important to obey traffic signs and signals, and to use turn signals when merging into traffic. This helps ensure safe and efficient flow of traffic in the area.