TPEG is like a special code that helps cars and people know what is happening on the roads. You know how you can look at a picture and see what is going on? TPEG is like that, but it uses words and symbols that a computer can read.
So, let's say there is a big traffic jam on the road you normally take to school. TPEG would send a message to your mom's car telling her about the traffic jam, and then her car's GPS could help her find a different way to get you to school faster.
TPEG also helps with other things like letting you know what exits are coming up on the highway, or if there is a road closure or accident ahead. It helps keep everyone safe and get them to where they need to go on time.