Editing Flying junction (section)

{{Short description|Type of railway junction}}
{{Refimprove|date=June 2011}}
[[Image:Flying-junction-both-tracks.svg|thumb|right|300px|Flying junction: with a bridge, trains do not block each other]]

A '''flying junction''' or '''flyover''' is a [[railway junction]] at which one or more diverging or converging tracks in a multiple-track route cross other tracks on the route by bridge to avoid conflict with other train movements. A more technical term is "[[grade separation|grade-separated junction]]". A '''burrowing junction''' or '''dive-under''' occurs where the diverging line passes below the main line.

The alternative to grade separation is a [[level junction]] or flat junction, where tracks cross [[At-grade intersection|at grade]], and conflicting routes must be protected by interlocked [[railway signal|signal]]s.