What describes the entire width between boundary lines of a way that is publicly maintained for vehicular travel?

The term that describes the entire width between boundary lines of a way that is publicly maintained for vehicular travel is "highway." In the context of motor vehicle law, a highway encompasses not just the driving surface but also any additional right-of-way area, including shoulders, sidewalks, and other infrastructure that is part of the roadway system intended for use by vehicles. This definition highlights the infrastructure's purpose and maintenance by public authorities, distinguishing it from other terms like street, roadway, or parkway, which may not encompass the same breadth of meaning or public responsibility in the same way.

A highway serves as a vital component of the transportation network, facilitating the movement of vehicles, goods, and sometimes pedestrians, depending on local regulations. The focus on public maintenance also indicates that highways are typically designed for higher traffic volumes and faster speeds compared to other types of roads, reflecting a specific standard of travel and safety management.