What characteristics define the purpose of commercial buses?

The defining characteristic of commercial buses primarily centers around their design as a mode of public transportation. Commercial buses are intended to transport passengers in a variety of settings, which includes not just contractual duties but also regular public transit. This comprehensive nature of service encompasses a broad range of operations, from city bus services to long-distance travel, which supports the common understanding of commercial buses as vehicles designed for transporting the public efficiently.

While options might suggest specific uses, such as school transport or tour services, these do not encapsulate the full spectrum of what commercial buses are utilized for in general. The variety of potential applications, including the availability for contractual agreements, showcases the flexibility and adaptability of commercial buses to meet different transportation needs within communities.