Editing Driver Character: Socially-Controllable Behavior Generation for Interactive Traffic Simulation

• URL: http://arxiv.org/abs/2303.13830v1
• Date: Fri, 24 Mar 2023 06:38:42 GMT
• Title: Editing Driver Character: Socially-Controllable Behavior Generation for Interactive Traffic Simulation
• Authors: Wei-Jer Chang, Chen Tang, Chenran Li, Yeping Hu, Masayoshi Tomizuka, and Wei Zhan
• Abstract summary: Traffic simulation plays a crucial role in evaluating and improving autonomous driving planning systems. To ensure that autonomous vehicles take safe and efficient maneuvers in different interactive traffic scenarios, we should be able to evaluate autonomous vehicles against reactive agents. We propose a socially-controllable behavior generation model for this purpose, which allows the users to specify the level of courtesy of the generated trajectory.
• Score: 29.623575243494475
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Traffic simulation plays a crucial role in evaluating and improving autonomous driving planning systems. After being deployed on public roads, autonomous vehicles need to interact with human road participants with different social preferences (e.g., selfish or courteous human drivers). To ensure that autonomous vehicles take safe and efficient maneuvers in different interactive traffic scenarios, we should be able to evaluate autonomous vehicles against reactive agents with different social characteristics in the simulation environment. We propose a socially-controllable behavior generation (SCBG) model for this purpose, which allows the users to specify the level of courtesy of the generated trajectory while ensuring realistic and human-like trajectory generation through learning from real-world driving data. Specifically, we define a novel and differentiable measure to quantify the level of courtesy of driving behavior, leveraging marginal and conditional behavior prediction models trained from real-world driving data. The proposed courtesy measure allows us to auto-label the courtesy levels of trajectories from real-world driving data and conveniently train an SCBG model generating trajectories based on the input courtesy values. We examined the SCBG model on the Waymo Open Motion Dataset (WOMD) and showed that we were able to control the SCBG model to generate realistic driving behaviors with desired courtesy levels. Interestingly, we found that the SCBG model was able to identify different motion patterns of courteous behaviors according to the scenarios.

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