Can a locomotive push the train forward?

The locomotive can move forward and backward, and the power is the same. When there is a vehicle attached, someone must watch in front of the locomotive and use the radio to inform the driver of the road conditions. Under normal circumstances, passenger cars are not allowed to move backward, and The train is not allowed to trailer the front and rear locomotives. It can only be mounted behind the first locomotive in front of the train and in front of the vehicle