Crossing Bowmacs/Panels
This set is designed for a Double Line and Single Carriageway Road with Walkway.
These have a 0.25mm lip around the edge that replicates the steel frame, so that the middle can be either painted or have very fine wet/dry or embosed paper in to replicate either the black composite material or concrete used. The feet and either be glued to the sleepers or drilled and pinned to hold the panels in place.
Taken from measurements of the real thing used of all types of level crossings all over the country.