1) Rail junction type 2) Road hazard 3) Traffic sign 
A level crossing (a primarily British term; usually known as a railroad crossing in the United States) is an intersection where a railway line crosses a road or path at the same level, as opposed to the railway line crossing over or under using a bridge or tunnel. The term also applies when a light rail line with separate right-of-way or reserved ...
[n] - intersection of a railway and a road on the same level
grade crossing noun intersection of a railway and a road on the same level; barriers close road when trains pass