Determination method, device and equipment for movement authorization distance of virtual rail train

The invention discloses a virtual rail train movement authorization distance determination method, device and equipment, and the method comprises the steps: determining whether a rail intersection exists in a preset distance in front of a current train in a main rail according to the current train position of the current train in the main rail; if yes, whether a first obstacle train exists in the auxiliary track or not is determined; if yes, determining a first track distance between the first obstacle train and the track intersection; determining whether the first obstacle train has a side collision risk to the current train according to the first rail distance; if yes, a second track distance between the current train and the first obstacle train is determined, and the current movement authorization distance of the current train is determined according to the conventional braking distance, the emergency braking distance and the second track distance corresponding to the current train. According to the inven