This is a symbol representing train tracks. There are two vertical parallel lines with several parallel horizontal lines crossing them at a perpendicular angle. the vertical lines are longer than the bisecting horizontal lines.
This Tracks 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 6,000 icons, all in the same style and quality.