DCC, or Digital Command Control, is a system that allows you to operate multiple model trains on the same track using digital signals. With DCC, each train is equipped with a decoder that receives and interprets digital commands from a central control unit. This allows you to control the speed, direction, and other functions of each train individually, rather than having to use multiple power packs and track sections to control them separately.

One of the main advantages of DCC is that it allows you to operate multiple trains on the same track without interference. With traditional model train control systems, if you wanted to run multiple trains on the same track, you would have to use separate power packs for each train, and switch between them manually to control the trains. With DCC, you can operate multiple trains on the same track simultaneously, and control them individually using the central control unit.

DCC can also offer more realistic and detailed control of your model trains. Many DCC systems allow you to program specific functions, such as lighting and sound, into each train’s decoder, giving you greater control over the operation of your model railway.

Overall, DCC is a popular choice for model train enthusiasts who want more advanced and detailed control over their layouts. It can be a bit more expensive and complex than traditional control systems, but it offers many benefits and can greatly enhance the realism and enjoyment of your model railway.