What is the abbreviation for the Chestnut Hill West Line?

The Chestnut Hill West Line is identified by the abbreviation "CHW." This abbreviation is derived directly from the name of the line, where "C" stands for Chestnut, "H" stands for Hill, and "W" indicates West. Such abbreviations are commonly used in transportation systems to easily refer to various routes and lines, providing clarity for both operators and passengers. This system of creating abbreviations helps streamline communication and ensures that the names remain concise and recognizable.

The other options do not accurately represent the Chestnut Hill West Line; they could refer to other lines or locations, which is why they are not correct for this specific reference. Focusing on the initial letters of significant words in the name of the line ensures that the abbreviation is meaningful and associated directly with the intended location and service.