Overspeeding hogi hi,koi use rok nahi sakta.Ex-train 130kmph se chall rahi hai to aise bohot se conditions aate hai jisse train ki speed thori increase ho jaati hai like gradient(slope),sometimes the load of coaches pushes the engines forward in that case speed also increases by few kmph.Simple physics hai.
Jaisa ki ham sab jaante hai Vigyaan se bara kuch nahiЁЯШОЁЯШО