The PDF link below explains all the new Carrera digital track items. You must have the 30352 control unit to operate the other items. Feature Guide (pdf)
Functions:
(Only in combination with Control Unit 30352 and Pit Lane 30356 or Pit Stop Adapter Unit 30361)
* LED-display shows tank capacity and allocation of cars as well as your position in the race
* LED-control display for up to 3 pit stops in the Pit Lane 30356
* LED-display shows the running steps (speed) of your car. display.
* Ability to manage 6 racers on 1 unit, however, for optimum race enjoyment it is recommended to use a separate Driver Display for each racer. This avoids a change between car addresses having to be made while running.