code: def setApparentDecel(self, vehID, decel):
          
          self._connection._sendDoubleCmd(
              tc.CMD_SET_VEHICLE_VARIABLE, tc.VAR_APPARENT_DECEL, vehID, decel)
docs: setApparentDecel(string, double) -> None
  
          Sets the apparent deceleration in m/s^2 for this vehicle.