The operator of a motor-bus carrying passengers for hire must stop not closer than ___________, or farther than ___________ from the nearest rail of the railroad.

The regulations regarding the stopping distances for a motor bus carrying passengers for hire near railroad tracks are designed to ensure safety and prevent accidents. The correct stopping distance is established to give the operator enough time to react to an approaching train and to allow passengers to safely exit the vehicle.

In this case, the requirement to stop not closer than 15 feet from the nearest rail of the railroad ensures that the bus is at a safe distance where it does not interfere with the movement of trains. This distance allows sufficient room for the bus to safely await the passage of a train without risking being too close to the tracks. The upper limit of not stopping farther than 50 feet from the nearest rail is set to ensure that the bus remains visible to train operators and does not block the travel or sightlines of the cars awaiting the bus.

This regulation emphasizes the importance of maintaining a safe distance in both directions—preventing accidents while considering the visibility and operational needs of both the bus and the trains.