考虑当前自动驾驶技术成熟度和公众接受程度等问题，网联混驾编队模式可能是自动驾驶编队全面普及应用前的可行的过渡模式之一。为研究网联条件和车队形式对网联混驾编队运行特征及生态安全的影响，文中基于驾驶模拟技术搭建的网联混驾编队实验测试平台，构建由5辆车组成的“领航车-网联L2级人工驾驶车辆、跟驰车-网联自动驾驶车辆”的网联混驾编队模式，并邀请36名被试开展驾驶模拟实验。考虑时域分析侧重呈现指标的时间维度变化，而频域分析可以挖掘指标的频率分布特性，文中选取速度、加速度指标从时域和频域维度分析车辆运行特征，同时选取油耗、速度安全熵指标评价车辆运行的生态安全性。结果表明：网联条件和编队模式均有助于车辆行驶更加平稳，并显著提升其生态安全性；网联混驾编队的综合效能最佳，相较传统单车模式，油耗可降低10.67%，速度安全熵值可降低73.25%。该研究成果可为自动驾驶企业及行业开展网联人机交互终端设计、领航驾驶辅助系统研发、网联混驾编队可行性及有效性测试等提供方案借鉴和平台支持。

Considering the current maturity level of autonomous technology and the general public’s acceptance of this technology, the connected mixed platoon mode may be a practical transitional strategy prior to the widespread deployment of fully autonomous platoons. To study the influence of connected condition and platoon mode on the operational characteristics and eco-safe influence of connected mixed platoon, this paper constructed a connected mixed platoon mode consisting of five vehicles: a human-driven leader vehicle equipped with an L2 connected driving assistance system, followed by connected autonomous vehicles. Thirty-six participants were invited to participate in driving simulation experiments using the developed test platform. Given that time-domain analysis focuses on the variation of indicators in the time dimension, while frequency-domain analysis can explore the frequency distribution characteristics of indicators, this paper analyzed vehicle operation characteristics from the time and frequency domain dimensions with indicators of speed, acceleration, fuel consumption and speed safety entropy. The results show that both the connected condition and the platoon mode contribute to stable vehicle operation and significantly enhance their eco-safety. Compared with the traditional single-vehicle mode, the connected mixed platoon has the best comprehensive efficiency and can reduce the fuel consumption by 10.67% and the speed safety entropy by 73.25%. The research results can provide scheme reference and platform support for autonomous driving enterprises and industries in executing connected HMI design, navigate on autopilot (NOA) development, and the feasibility and effectiveness test of connected mixed platoon.