Imagine you are riding a train and you are about to go around a corner. Since the train can't turn or bend quickly like a person can, the track has to help the train turn smoothly.
A track transition curve is like a special curved section of track that helps the train turn gradually without making any sudden or jerky movements. It's like a big bend that starts out straight and gradually gets curvier until the train reaches the desired angle for the corner.
The track transition curve is important to make sure the train stays safe and doesn't tip over because if the train went around the corner too quickly without a transition curve, the passengers might get jolted around, and the train might tip over.
So, the track transition curve helps the train turn smoothly and safely around corners by gradually curving the tracks instead of making the train make sudden movements.