Idea of Railroad Crossing Icon
There is a circle with an x that covers the entire circle. there are 2 r's with one on the left and one on the right side of the circle.
This Railroad Crossing icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,100 icons, all in the same style and quality.