Operational Characteristics and Eco-Safe Influence of Connected Mixed Platoon in Car-Following Event

doi:10.12141/j.issn.1000-565X.230388

Abstract

Abstract:

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.

Key words: connected mixed platoon, connected human-machine-interaction, driving behavior, eco-driving, automobile driver simulator

CLC Number:

U491.2

FU Qiang, ZHAO Xiaohua, LI Haijian, REN Wenhao, DAI Yibo. Operational Characteristics and Eco-Safe Influence of Connected Mixed Platoon in Car-Following Event[J]. Journal of South China University of Technology(Natural Science Edition), 2024, 52(8): 65-75.

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预警点	预警信息
①	前方1 000 m最外侧为生态车道，建议速度80~90 km/h
②	前方500 m最外侧为生态车道，建议速度80~90 km/h
③	您已进入生态车道，建议速度80~90 km/h
④	前方有慢速车辆
⑤	请保持安全车距
⑥	前方500 m生态车道结束
⑦	您已驶离生态车道
	建议速度80~90 km/h
	“哔哔哔”蜂鸣声
	请避免急加速
	请避免急减速

性别	数量	年龄/岁		驾龄/a		不同驾驶里程下的人数
性别	数量	均值	标准差	均值	标准差	<3万km	≥3万km
合计	36	36.67	14.18	9.61	10.01	24	12
男性	24	38.59	13.98	11.67	10.51	14	10
女性	12	32.83	13.80	5.51	7.38	10	2

指标	均值				显著性
指标	单车-无网联	单车-网联	编队-无网联	编队-网联	车队形式	网联条件	交互作用
速度/（km·h^-1）	77.03	77.76	80.10	76.93	0.231	0.022*	0.035*
加速度/（m·s^-2）	-0.025	-0.029	-0.019	-0.011	0.354	0.489	0.152

指标	均值				显著性
指标	单车-无网联	单车-网联	编队-无网联	编队-网联	车队形式	网联条件	交互作用
油耗/（L·（100 km）^-1）	7.50	6.82	6.46	6.70	0.000**	0.971	0.008**
速度安全熵	0.038 5	0.013 0	0.021 5	0.010 3	0.036*	0.000**	0.253

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