FAQ:What is a Power Routing Turnout
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A power routing turnout is unnecessary with Digital Command Control.
Power routing is important in the analog DC realm. It allows an operator to enter a siding, stop his train, and when the turnout is thrown to its normal position, there will be no power to the siding. If the siding and the main line are part of the same block, other trains may pass without disturbing the parked train.
With DCC, the operator can park his train, set the lights as required by the rulebook and leave the locomotives idling on the siding, as power will be supplied regardless of the position of a turnout. With power maintained, any markers on the caboose will remain lit (if equipped). If desired a sound locomotive can be shut down. The operator is free to take control of another train, knowing the parked train will remain in place.
All this is accomplished without the need for a power routing turnout. It even allows for complex passing operations.