VOA慢速英语:Simulation Helps Control, Manage Traffic

application – n. a computer program that performs a particular task

congestion – n. a crowd of something such as vehicles or people

freeway – n. a wide highway that is built for fast travel

significantly – adv. in a way that is large or important enough to be noticed or have an effect

simulation – n. something that is made to look, feel, or behave like something else especially so that it can be studied or used to train people

visualization – n. a mental picture of someone or something