Rail lines are tracks made of steel that trains run on. They are essential for transporting goods and passengers over long distances. Rail lines can be found in cities, rural areas, and even across countries, connecting various regions and facilitating trade and travel. The construction of rail lines involves laying down parallel tracks, supported by ties and ballast. Different types of rail lines exist, including freight lines for cargo transport and passenger lines for commuters. Rail systems can be electric or diesel-powered, and they play a crucial role in many countries' transportation infrastructure.