A public carrier is a company or service that transports goods or passengers for the general public. These carriers operate under specific regulations and are required to provide their services to anyone who pays the fare or shipping fee. Examples of public carriers include buses, trains, and airlines. Public carriers are essential for facilitating travel and trade, making it easier for people to move from one place to another and for businesses to deliver products. They often operate on set routes and schedules, ensuring accessibility and reliability for their users.