CrowdSim3D

CrowdSim 3D is an agent based crowd and traffic simulation add-on for Blender. With this add-on you can easily create different types of crowds for your scene. Using the Blender Node Editor you can visually program the behavior of the crowd. CrowdSim3D supports different algorithms for navigation and avoidance and uses velocity based animation blending.
With the traffic sim you can easily configure your traffic and junctions. Animation of car signals are also supported.