Taxis, buses, and trains are considered common carriers under the law. This classification is important when one of these modes of transportation is involved in an accident. Regular drivers owe a duty of reasonable care to those on the roadway as well their passengers. But a common carrier owes the highest duty of care to its passengers. The law places this higher duty upon them because they are transporting passengers for money. People pay a fare for transportation and as such, the law places the highest duty of care on common carriers.