As far back as the 19th century, urban planners and engineers saw the need to move people quickly about fast-growing cities. Steam engines were the dominant technology that powered early systems. Over the years, steam gave way diesel and electric-powered moving stock and more cities around the globe constructed mass transit rail systems. In 2020, as cities around the globe experience even greater growth, planners and engineers are using new technology to improve not only performance of the trains but moving the people who use them. Take this quiz to test your knowledge on the development of rail urban mass transit.