在⾃动驾驶仿真领域，场景⼀直是⼤家关注的重中之重。因为⾃动驾驶仿真与传统的仿真的最⼤区别就是缺少了⼈。⾯对复杂的交通状况做出灵活应对，在⾃动驾驶之前⼀直是⼈类驾驶员的责任，⽽在⾃动驾驶⾯世之后，车辆本⾝需要对⾃⼰负责、对乘坐在其上的乘客负责。因此，需要在⾃动驾驶车辆上路之前，尽可能多的经历不同场景的测试和考验，才能让消费者放⼼，让⼚商⾃⼰安⼼。

M-SDL is a small, domain-specific language designed for describing scenarios where actors (sometimes called agents), such as cars and pedestrians, move through an environment. These scenarios have parameters that let you control and constrain the actors, the movements and the environment.