PUSHING CARS. White lights and white flags at A A. See Rule 21. Lights at B B, as markers, showing green at side and in direction engine is moving and red in opposite direction. See Rule 19. ENGINE RUNNING FORWARD BY DAY DISPLAYING SIGNALS FOR A FOLLOWING SECTION. Green flags at A A. See Rule 20. ENGINE RUNNING BACKWARD BY DAY, WITHOUT CARS OR AT THE REAR OF A TRAIN PUSHING CARS, AND DISPLAYING SIGNALS FOR A FOLLOWING SECTION. Green flags at A A. See Rule 20. Green flags at B B, as markers. See Rule 19. ENGINE RUNNING BACKWARD BY NIGHT, WITHOUT CARS OR AT THE REAR OF A TRAIN PUSHING CARS, AND DISPLAYING SIGNALS FOR A FOLLOWING SECTION. Green lights and green flags at A A. See Rule 20. Lights at B B, as markers, showing green at side and in direction engine is moving and red in opposite direction. See Rule 19. |