Railway system: Passing module, double crossover type | Akiyuki.jp
Peeron: Train Rail Crossing for RC Trains (#7996-1)
LEGO 7996 Train Rail Crossing Track Rare Switches with crossover FUN | #1781586452
NEW Lego RC TRAIN 7996 Double Crossover Track Ships World Wide | eBay
Bastens - We are lucky enough to have one of the LEGO City Train Track Splitter 7996 which is now retired. That being said I wouldn't recommend spending over $250 to buy
Trixbrix Double Crossover R40 compatible with LEGO TRAIN | eBay
Ultimate Double Crossover
NEW Lego RC TRAIN 7996 Double Crossover Track Ships World Wide | eBay