C1 -
Are there any traffic light?
C2 -
Is the green signal lighted?
C3 -
Is there any policeman controlling the flow of traffic?
C4 -
Does the policeman let me through?
C5 -
I’m on the main road?
C6 -
Is there any main road?
C7 -
Are there any cars on the main road?
C8 -
Does any car come from the right?