Rainy day train start, speed up, whether the wheel slip slip and rail friction? Can passengers be aware of it?
Because it will still happen, so the train driver will be alert to the wheel idling, and take measures. The locomotive has an idling protection alarm signal; locomotive acceleration can not be too fast; as appropriate in advance sand.
Will slip, the probability is very small.
Train a section of the car is not tightly connected, the hook between the design of each other, parking or start before the hook will be forward, each compartment are not force each other. When the train started when the compartment between the buffer mechanism in a row to tighten the tight, the front at the same time each time only add a carriage, static friction is not so much thought. Sometimes at the start of the car at the beginning of the bar or sand. Imagine the structure of the chain. Each ring is pushed, starting from the first ring to pull the entire chain, not the whole movement at the same time, but between a section of the amount of tight pull forward.
