超视距预警对混驾编队人驾领航车的安全影响

Safety impact of predictive-forward-collision-warning on human-driven leading vehicle in mixed platoon

关键词:  混驾编队  超视距预警  人驾领航车  纵向避险特性  驾驶模拟技术  安全替代指标

Key words:  mixed platoon  predictive-forward-collision-warning (PFCW)  human-driven leading vehicle  longitudinal risk avoidance characteristics  driving simulation technology  surrogate safety measures

摘要:

为评估高速公路前方车辆急减速事件下超视距预警对人驾领航车行驶安全的影响,设计了领航车为人工驾驶车辆的网联混驾编队模式,开发了具有超视距预警功能的网联人机交互界面,招募了36名被试开展考虑单车/编队的车队模式和有/无网联超视距预警的驾驶模拟实验。通过选取驾驶人行为特征指标、安全替代指标和车辆运行指标,从驾驶人纵向避险能力、动态碰撞风险和混驾编队整体安全性维度分析超视距预警的影响。结果表明:超视距预警能够提升驾驶人纵向避险能力,降低车辆碰撞风险；其中,网联混驾编队模式下的人驾领航车行驶安全性表现最佳,其表现亦有助于提升混驾编队整体安全性。研究结果可为超视距预警信息优化、领航辅助系统研发、网联混驾编队推广实施等提供数据支持。

Abstract:

To evaluate the impact of predictive-forward-collision-warning (PFCW) on the driving safety of the human-driven leading vehicle during rapid deceleration of the preceding vehicles on freeways, this study designed a connected mixed platoon featuring a human-driven leading vehicle and developed a connected human-machine interface (HMI) with PFCW functionality. Thirty-six participants were recruited for driving simulation experiments that considered platoon configuration (single vehicle or platoon) and connectivity condition (with or without). By selecting driver behavior characteristic indicators, surrogate safety measures, and vehicle operation indicators, the impact of PFCW was analyzed in terms of drivers′ longitudinal risk avoidance behavior, dynamic collision risk, and overall safety of the mixed platoon. The results indicated that PFCW enhances drivers′ longitudinal risk avoidance capabilities and reduces the collision risk of the leading vehicle. The leading vehicle in the connected mixed platoon mode demonstrated the best performance in terms of driver safety, ultimately improving the overall safety of the mixed platoon. The findings provide valuable insights for optimizing PFCW information, developing navigate on autopilot system, and promoting the implementation of connected mixed platoons.