Wooden sleeper refers to a rail sleeper made of wood. Also known as sleepers. The production of wooden pillows requires the use of tough and elastic wood. Wooden pillows can be divided into ordinary wooden pillows, switch pillows, and bridge pillows according to their purposes. The standard length of ordinary wooden sleepers is 2.5 meters, and their cross-sectional shapes are divided into two categories: I and II, which are used on different grades of lines.

The advantage of wooden pillows is that they are elastic and can alleviate the dynamic impact of trains; Easy to process and manufacture; Easy to transport, lay and maintain; Has good insulation performance; The connection between fasteners and wooden pillows is simple; There is a high coefficient of friction between wooden sleepers and crushed stone ballast, which can ensure the stability of the track.