There39s nothing worse than pesky traffic getting in the way of a train on a mission close off the road to allow a pair of trains to safely pass with this double level crossing r636 for hornby 00 gauge track layouts the two tracks are carefully spaced out at intervals to suit standard hornby twin track geometry making it easy to incorporate into most layouts it comes with a pair of traditional gates to hold traffic at bay as well as a pair of more modern looking barriers should you wan