This document summarizes the key components of a railway track system. It discusses the ballast, permanent way consisting of rails mounted on sleepers, and various types of rail fastenings. It describes the different types of rails used - double headed, flat footed, and bull headed. It also outlines the different types of sleepers that can be used, including wooden, metal, and concrete sleepers. Finally, it provides a brief overview of the construction process for a railway track.