Steel rails contribute to train braking performance in several ways. Firstly, steel rails provide a smooth and stable surface for the train wheels to grip onto during braking, allowing for effective traction and preventing wheel slippage. This ensures that the train can decelerate efficiently and come to a stop in a shorter distance. Additionally, the hardness and durability of steel rails allow for consistent and reliable braking performance over long periods of time, minimizing maintenance needs. Overall, steel rails play a crucial role in maximizing the braking efficiency and safety of trains.