<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
How easy is it to cause a derailment?
<|assistant|>
It is not easy to cause a derailment. Generally, derailments require the presence of an object on or near the track, such as a large rock, and often require a train that is traveling at excessive speed, or that is improperly loaded. Additionally, certain weather conditions, such as flooding, can cause rail lines to become unstable, increasing the risk of derailment. Derailments are relatively rare, due to the steps taken by railway companies to maintain the safety of the tracks. Safety systems in place, such as Positive Train Control, can help minimize the damage and number of injuries in the event of a derailment.