How do the morning news reports and radio announcers know what the traffics is?

[K to the E to the LLY]

How do they track the traffic?

 

[ButtErFingErs]

CCTV? And they have lots of people...to check where it is...

 

[Five Seven]

Flying machines called helicopters.

 

[donnaj867]

Hello !
I am also a new member. Would a newcomer be warmly welcome here? Good day you guy !