Today is the first day of Real ID enforcement at airports across the U.S. Here's what travelers have to know before taking to the skies.

Real ID enforcement began on Wednesday. One place you will need the new identification card is at the airport, and all signs at Pittsburgh International pointed to a smooth first day. KDKA-TV's Chilekasi Adele has more.

Tracy Moffat experienced only a minor hiccup with her Real ID as she used it for the first time to fly from Boston to Pittsburgh Wednesday. The new identification requirement, which went into effect Wednesday,