What is the problem?

M:(41)Why is the traffic so heavy? I’m afraid we might miss our flight. It’s already 2 o’clock.(42)We have to get to the airport at least by a quarter to three.
W: Oh, I remember I heard there will be huge parades celebrating the national holiday. Several major roads must be blocked.
M: Then, what are we supposed to do? We don’t want to miss our flight.
W:(43)Let’s ask the police officer standing over there.