Traffic Velocity Simulation: Sine Waves and Random Experiments

① This GeoGebra example dynamically simulates vehicle velocity variations in traffic flow, demonstrating how speed changes follow a sinusoidal pattern with superimposed random perturbations. ② Core mathematical concepts include sine functions, random variables, function graphs, sequences, segments, and stochastic experiments affecting deterministic models. ③ Construction highlights: uses Sequence and Segment commands to generate velocity curves and road segments, involving objects such as g_y, f, a, b, c, d, list1, list2, with buttons (button1, button2, button3) to trigger random experiments, sliders (e.g., k) to adjust parameters, and a cuboid plus road textures (photo_road, left_road, right_road, mid_road) to build a 3D scene. ④ Suitable for high school or early college students learning function modeling, introductory stochastic processes, and interactive GeoGebra design, also useful for physics or traffic engineering demonstrations of speed-time relationships.