Public transportation refers to a shared passenger service that is available for use by members of the general public. This can include various modes of travel such as buses, trains, subways, trams or trolleys, and even ferries. The goal of public transportation is to provide an efficient, cost-effective, and environmentally friendly way for people to get from one place to another without having to use their personal vehicle. Public transportation systems are often owned and operated by local or national government agencies, but can also be run by private companies or nonprofit organizations. By using public transportation instead of driving alone, individuals can help reduce traffic congestion, air pollution, and greenhouse gas emissions, making it an important component in creating more sustainable communities.