human: <image>
What are the yellow vehicles used for?
Answer the question using a single word or phrase.

gpt: fighting fires

human: Is this a toy fire truck?

gpt: no

human: Is that a fire truck?

gpt: yes

human: Is there a lot of traffic?

gpt: yes

human: How many vehicles are in this picture?

gpt: 30

human: Why do the cars need to yield to the yellow vehicle in the center?

gpt: fire truck