A track structure consisting of four frogs that allows two lines to intersect directly on the same horizontal plane. It requires trains on one route to yield to trains on the other, creating a natural bottleneck and a high-maintenance track component due to the constant pounding of wheels over the gaps.
Heard on the job
Dispatcher wants us to hold short of the flat crossing until the local clears.
Also heard as
- diamond crossing
- Level junction
- Diamond junction