Collaborative control of variable speed limits and lane change on freeway based on 5G edge computing

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), May.2025, Vol.48 No.5: 642-650

DOI: 10.3969/j.issn.1003-5060.2025.05.010

Authors

DENG Wei $ ^{1} $, YU Xinhai $ ^{1} $, ZHANG Lang $ ^{2} $, YANG Wei $ ^{3} $, DING Heng $ ^{2} $

(1. Anhui Expressway Network Operation Co., Ltd., Hefei 230088, China; 2. School of Automobile and Traffic Engineering, Hefei University of Technology, Hefei 230009, China; 3. Anhui Transport Consulting and Design Institute Co., Ltd., Hefei 230088, China)

Abstract and Keywords

Abstract: Aiming at the traffic congestion and safety problems in the bottleneck area of a freeway, this paper proposes a collaborative control strategy of the variable speed limits(VSL) and lane change(LC) in the bottleneck area of the freeway combined with 5G edge computing technology. Considering the dynamic characteristics of traffic flow changing with time and space, this study uses 5G road side unit (RSU) as a node to obtain and process traffic status information by road sections, while implementing an integrated VSL and LC control. Firstly, the improved cell transmission model(CTM) is used as a prediction model to calculate the optimal speed control sequence in the speed limit area with the goal of improving traffic efficiency. Then, based on the improved CTM, the optimal lane-level distribution of vehicles in the lane-changing area is calculated to induce vehicles to change lanes in advance. Finally, using a three-lane freeway section with a total length of 4.8 km as the analysis scenario, simulation experiments were conducted under the mixed traffic flow conditions of trucks and cars. The results show that the VSL-LC collaborative control strategy proposed in this paper can effectively optimize

Keywords: freeway; edge computing; variable speed limits(VSL) control; lane change(LC) control

作者信息

邓炜 $ ^{1} $，于欣海 $ ^{1} $，张朗 $ ^{2} $，杨伟 $ ^{3} $，丁恒 $ ^{2} $

(1. 安徽省高速公路联网运营有限公司，安徽合肥 230088；2. 合肥工业大学汽车与交通工程学院，安徽合肥 230009；3. 安徽省交通规划设计研究总院股份有限公司，安徽合肥 230088)

摘要和关键词

摘要: 针对高速公路瓶颈路段的交通拥堵及安全问题,结合5G边缘计算技术,文章提出一种应用于高速公路瓶颈区的可变限速(variable speed limits, VSL)与换道(lane change, LC)协同控制策略。考虑到交通流随时空变化的动态特性,以5G路侧单元(road side unit, RSU)为节点,分路段获取并处理交通状态信息,同时实施可变限速控制和换道控制集成控制。首先将改进的元胞传输模型(cell transmission model, CTM)作为预测模型,以提高交通效率为目标计算限速区域最优的速度控制序列;根据改进的CTM计算换道区域内车辆的车道级最优分布,诱导车辆提前换道;最后以3车道总长为4.8 km的高速公路路段为分析场景,在卡车和小汽车混合交通流条件下进行了仿真实验分析。实验结果表明,VSL-LC协同控制策略可以有效优化交通流运行状态,大幅提高交通流的效率和安全指标。

关键词: 高速公路；边缘计算；可变限速(VSL)控制；换道(LC)控制

Funding

国家自然科学基金资助项目(52072108); 安徽省住房城乡建设科学技术计划资助项目(2022-YF145)和合肥市自然科学基金资助项目(2022020)

合肥工业大学学报(自然科学版)

Navigation