Rail adhesion

Rail adhesion is when the wheels of a train stick to the tracks and have good traction. Think of it like you sticking to the ground when you wear shoes with good grips. This is really important because if the train's wheels don't have good traction, the train might not be able to move or stop properly.

There are a few things that affect rail adhesion. One is the weather. When it's rainy or snowy, the tracks get wet and slippery, which can make it harder for the train's wheels to grip onto the tracks. Another thing that can affect rail adhesion is the condition of the tracks themselves. If the tracks are old or damaged, the train's wheels might not be able to grip them as well.

Railway companies work hard to improve rail adhesion for trains. They use different materials to make the tracks and wheels, they clean the tracks regularly, and they also use sand to help give the wheels more grip in slippery conditions. All of these things help make sure that trains can move safely and efficiently.