What dimensions must the bundle be that allows a carrier to enter the subway without restrictions?

The correct dimensions that allow a carrier to enter the subway without restrictions are 18 inches wide, 12 inches long, and 15 inches high. This configuration is important as subway systems typically have specific requirements regarding the size of items that can be brought on board to ensure safety and comfort for all passengers.

The width of 18 inches is particularly crucial because it allows for easier maneuvering of the bundle within the confined spaces typical of subway cars, while the other dimensions maintain a suitable profile that does not obstruct pathways or impede access to seats.

Safe and efficient movement within the subway infrastructure is enhanced by adhering to these specific size guidelines. Thus, when passengers are aware of and comply with these dimensions, it leads to a more organized travel environment, minimizing disruptions and ensuring compliance with the operational standards of the subway system.