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A Dynamic Lane-Change Trajectory Planning Algorithm Based on Minimum Safe Spacing
Technical Paper
2020-01-5110
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
Automotive Technical Papers
Language:
English
Abstract
As one of the key technologies in automatic driving, trajectory planning for automated lane change should not only take into account the complex and dynamic driving environment at the beginning of the lane change but also on the whole process. However, most existing researches only consider other vehicles’ initial states and assume they do not change. But this may cause potential collisions because the vehicles’ running states vary at all times in a real situation. One important reason that causes this problem is that the lane-change vehicle cannot acquire accurate information regarding the other vehicles. However, this situation can be effectively improved with the development of vehicle-to-vehicle communication in recent years. In this background, this paper proposes a dynamic lane-change trajectory planning algorithm based on minimum safe spacing, which can calculate a safe and comfortable trajectory for the vehicle and update it to avoid potential collisions until the lane change is complete. Therefore, it is capable of planning a reference trajectory for a normal lane change, an emergency lane change, and a change back to the original lane. Finally, we conduct simulation experiments and the results show that compared with the conventional lane-change trajectory planning algorithm, the algorithm can update the lane-change vehicle’s trajectory, avoid potential collisions during the lane-change process effectively, and improve traffic efficiency on the premise of safety and comfort; compared with other dynamic lane-change trajectory planning algorithms, the algorithm can transform the complex anti-collision constraints into the objective function, which can greatly reduce the difficulty of the solution and improve the efficiency of computing.
Authors
- Yao Li - University of Chinese Academy of Science (UCAS); Institute o
- Lifang Wang - University of Chinese Academy of Science (UCAS); Institute o
- Yan Wu - Institute of Electrical Engineering of the Chinese Academy o
- Fang Li - University of Chinese Academy of Science (UCAS); Institute o
- Fei Tian - Beijing Information Science and Technology University (BISTU
- Hangeng Li - Beijing Information Science and Technology University (BISTU
Topic
Citation
Li, Y., Wang, L., Wu, Y., Li, F. et al., "A Dynamic Lane-Change Trajectory Planning Algorithm Based on Minimum Safe Spacing," SAE Technical Paper 2020-01-5110, 2021, https://doi.org/10.4271/2020-01-5110.Also In
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