A junction in railroads is like a big puzzle piece that helps trains to move from one track to another. It is a place where tracks come together and form a crossroads. Imagine playing with toy trains and you have two different tracks that meet at a certain point where you can switch the train's direction. That's a junction in real life! It is designed to help trains reach different destinations, and it is important to make sure that the trains go in the correct direction to prevent accidents. It's like using a map to make sure you are going in the right direction when you drive your toy car. Joints allow for an efficient railway system so that passengers and goods can be transported safely and on time.