Fastrak is a special gadget that helps you pay for using certain roads called toll roads. These are roads where you have to pay money to use them, kind of like a ticket to get on a ride at the amusement park.
The Fastrak gadget is like a little box that you attach to your car, and it makes it really easy to pay for using the toll road. Instead of having to stop and pay money every time you want to use the road, the toll road will automatically charge your Fastrak gadget.
It's kind of like having a little piggy bank that you use only for paying for things like toll roads. When you drive through the toll road, the money for the toll comes right out of your piggy bank (Fastrak gadget) and you don't have to worry about stopping to pay.
It's a faster and easier way to use toll roads, and it helps you get to where you're going faster because you don't have to stop and waste time paying at a toll booth.