Final answer:
In the video, there are three signs that indicate an emergency: a woman pushing a baby stroller, two cars stopped at an intersection with the rear car honking its horn, and a dog running out of an opened door with its tail between its legs.
Step-by-step explanation:
The signs that indicate an emergency in the video are as follows:
- A woman pushing a baby stroller down the street: This could indicate a medical emergency if the woman or the baby is in distress.
- Two cars stopped at an intersection with the rear car honking its horn: This could indicate a car accident or an urgent situation that requires immediate attention.
- A dog running out of an opened door with its tail between its legs: This could indicate a potential dangerous situation, such as an aggressive dog or a break-in.