Crossbuck

It is composed of two slats of wood or metal of equal length, fastened together on a pole in a saltire formation (resembling the letter X).

Crossbucks are often supplemented by electrical warnings of flashing lights, a bell, and/or a boom barrier that descends to block the road and prevent traffic from crossing the tracks.

It specified these models: It also specified multi-track models: In the United States, the crossbuck carries the words "rail" and "road" on one arm and "crossing" on the other ("rail" and "road" are separated by the "crossing" arm), in black text on a white background.

Some antique U.S. crossbucks were painted in other color schemes, and used glass "cat's eye" reflectors on the letters to make them stand out.

A special kind of crossing sign assembly was introduced on an experimental basis in Ohio in 1992, the "Buckeye Crossbuck".

Older designs read "cuidado con el tren", meaning "beware of the train".

In Australia, Canada, New Zealand, and the U.S., a sign is mounted beneath the crossbuck (above the warning light assembly, if any) with the number of tracks.

In Argentina, railway crossing ahead signs used a common red-bordered triangle defaced with a black steam locomotive icon placed on white background according Vienna Convention, like the most other countries in the world outside of the Americas.