University of North Carolina, Chapel Hill
University of Central Florida
We present AutonoVi, a novel algorithm for autonomous vehicle navigation that supports dynamic maneuvers and satisfies traffic constraints and norms. Our approach is based on optimization-based maneuver planning that supports dynamic lane-changes, swerving, and braking in all traffic scenarios and guides the vehicle to its goal position. We take into account various traffic constraints, including collision avoidance with other vehicles, pedestrians, and cyclists using control velocity obstacles. We use a data-driven approach to model the vehicle dynamics for control and collision avoidance. Furthermore, our trajectory computation algorithm takes into account traffic rules and behaviors, such as stopping at intersections and stoplights, based on an arc-spline representation. We have evaluated our algorithm in a simulated environment and tested its interactive performance in urban and highway driving scenarios with tens of vehicles, pedestrians, and cyclists. These scenarios include jaywalking pedestrians, sudden stops from high speeds, safely passing cyclists, a vehicle suddenly swerving into the roadway, and high-density traffic where the vehicle must change lanes to progress more effectively.
Best, A., Narang, S., Barber, D., & Manocha, D. (2017). AutonoVi: Autonomous Vehicle Planning with Dynamic Maneuvers and Traffic Constraints. IROS 2017 (To appear)
Best, A., Narang, S., Pasqualin, L., Barber, D., & Manocha, D. (2017). AutonoVi-Sim: Modular Autonomous Vehicle Simulation Platform Supporting Diverse Vehicle Models, Sensor configuration, and Traffic Conditions.
Abstract: We introduce AutonoVi-Sim, a novel high-fidelity simulation platform for testing autonomous driving algorithms. AutonoVi-Sim is a collection of high-level extensible modules which allows for the rapid development and testing of vehicle configurations, and facilitates construction of complex road networks. Autonovi-Sim supports multiple vehicles with unique steering or acceleration limits, as well as unique tire parameters and overall vehicle dynamics profiles. Engineers can specify the specific vehicle sensor systems and vary time of day and weather conditions to gain insight into how conditions affect the performance of a particular algorithm. In addition, AutonoVi-Sim supports navigation for non-vehicle traffic participants such as cyclists and pedestrians, allowing engineers to specify routes for these actors, or to create scripted scenarios which place the vehicle in dangerous reactive situations. AutonoVi-Sim also facilitates data analysis, allowing for capturing video from the vehicle's perspective, exporting sensor data such as relative positions of other traffic participants, camera data for a specific sensor, and detection and classification results. Thus, AutonoVi-Sim allows for the rapid prototyping, development and testing of autonomous driving algorithms under varying vehicle, road, traffic, and weather conditions.
Heavy fog impacts sensors and navigation
Wet roads reduce traction and increase stopping distance.
Ego-vehicle navigating congestion.
This work was funded in part by the Army Research Office, the National Science Foundation, Intel, and the Florida Department of Transportation.