本研究以交通与能源融合（简称“交能融合”）为背景，聚焦高速公路乘用车领域，分析了交通区域电源结构转型与分布式高速公路交通能源系统建设这两种重要的新发展形态，并从交通、能源及交能融合3个视角系统梳理了当前该领域在调度运营策略、网络部署规划、项目经济性与碳减排路径等方面的研究现状与趋势。在此基础上，进一步探讨了交能融合背景下高速公路乘用车低碳化发展的六大关键环节，即网络动态部署、电源清洁化、多能融合、协同调控、碳减排核算、市场化运营，并分析了各环节的阶段任务与相关政策。研究发现：该领域的低碳化转型并非简单依赖充电设施数量增加或电动化替代，而是交通系统、能源系统与碳管理体系协同演化的系统性变革。为此，应积极构建具备可调度、可交易、可核算、可持续运营能力的新型交通能源网络；同时进一步强化交通与能源多网络的协同调控与规划，完善需求调控、有序规划、绿电交易、碳核算与市场化运营机制。上述举措建议对实现出行补能需求、能源供给能力与碳减排目标之间的动态平衡，促进能源与交通资源的高效配置，以及推动公路乘用车领域电气化的可持续发展具有重要意义。

This study focuses on the expressway passenger vehicle sector within the context of transportation-energy integration (referred to as "TEI"). It analyzes two significant emerging development patterns: the transformation of regional power supply structures and the construction of distributed expressway transportation energy systems. From the perspectives of transportation, energy, and their integration, the study systematically reviews the current research status and trends on dispatch and operation strategies, network deployment planning, project economics, and carbon reduction pathways in the expressway passenger vehicle sector. On this basis, the study further explores six key aspects of low-carbon development in this sector under TEI: dynamic network deployment, clean energy sources, multi-energy supply, coordinated supply-demand regulation, carbon emission reduction accounting, and market operations. It also examines the phased tasks and relevant policies associated with each aspect. The findings indicate that low-carbon transition in this sector does not simply rely on increasing the number of charging facilities or vehicle electrification substitution; rather, it represents a systemic transformation driven by the coordinated evolution of the transportation system, energy system, and carbon management framework. Accordingly, it is imperative to actively build a new type of transportation energy network that is dispatchable, tradable, accountable, and sustainably operable. Furthermore, efforts should be made to strengthen multi-network coordination and planning between the transportation and energy systems, and to improve mechanisms for demand regulation, orderly planning, green electricity trading, carbon accounting, and market-based operations. These suggested measures are of great significance for achieving a dynamic balance among travel energy demand, energy supply capacity, and carbon reduction targets, promoting the efficient allocation of energy and transportation resources, and advancing the sustainable development of electrification in the highway passenger vehicle sector.