Calculation of Curve Speed in Urban Rail Transit Signaling System

The calculation method and process of the maximum running speed at curve section in urban rail transit signaling system is studied. Making use of the information of elevation, operation speed and vehicle weight provided by other specialties such as track specialty and vehicle specialty, taking the signaling safety braking model as base, the maximum emergency braking trigger speed and the maximum lateral acceleration and lateral impact rate (Jerk) after triggering emergency braking at operating speed are calculated. If these two calculated results meet the national standards, then the requirements are fulfilled. If the calculation results do not meet the requirements of the national standards, the common solution is for the track specialty or signal specialty to adjust relevant data accordingly. Detailed calculation formula is given and the curve section of an actual urban rail transit operation line is calculated.