Objects in the image:
category: car
category: traffic light
category: car
category: truck
category: traffic light
category: traffic light
category: truck
category: traffic light
category: truck

Guessing-game dialogue about one of the objects:
q: sign board?
a: No
q: vehicle ??
a: Yes
q: left lane?
a: Yes
q: truck approaching us?
a: Yes