Before revision: When the vehicles moves at the critical speed, a serious resonance around the loads takes place.|255x255px Critical embankment velocity is the velocity value of the upper moving vehicle that causes the severe vibration of the embankment and the nearby ground , which is also referred to as the critical speed shortly in the transportation engineering community .
After revision: When the vehicles moves at the critical speed, a serious resonance around the loads takes place.|255x255px Critical embankment velocity is the velocity value of the upper moving vehicle that causes the severe vibration of the embankment and the nearby ground or critical speed, in transportation engineering, .