为加快建设交通强国和新型能源体系，推进交通基础设施网与能源网融合发展，交通运输行业清洁能源应用正从“点状示范”迈向“全域融合”。通过政策驱动与技术创新，高速公路正成为集光伏发电、储能调峰、绿色充换电于一体的“新型能源枢纽”。在系统梳理交通与能源融合发展研究现状基础上，提出交能融合理论框架，探讨高速公路系统交通与能源多维度融合发展的优化路径。研究表明：推动交能融合发展已从单点技术突破转向“政策-技术-机制”系统重构，政策层面需强化国家目标与地方创新的协同，破解土地与审批难题；技术层面应深化源网荷储动态匹配与多场景适配能力，通过AI预测提升系统效率；机制层面需加快绿电交易市场建设与商业模式创新。围绕交能融合的规模化应用，应构建涵盖交通端、电力端与商业发展模式的三维政策框架：建立“规划协同⁃审批优化⁃标准引领⁃用地创新⁃监管强化”五措并举的交通端政策框架，加速交通网与能源网的深度融合；建立高效安全的可再生电力应用体系，增强系统运行可靠性及跨区域绿电调配能力；打造高速公路光储充一体化商业发展模式，推动交能融合从示范应用向规模化、产业化发展转型。

To accelerate the building of a country with strong transportation network and a new energy system， and to promote the integrated development of the transportation infrastructure network and the energy network， the application of clean energy in China’s transportation sector is shifting from point‑scale demonstration to full‑domain integration. Driven by policies and technological innovation， expressways are emerging as new energy hubs that integrate photovoltaic power generation， energy storage and peak regulation， and green charging and battery swapping. This article， by systematically reviewing current research on the integrated development of transportation and energy， establishes a theoretical framework for transport-energy integration， and explores optimized paths for the multi-dimensional integrated development of transportation and energy in expressway systems. Research shows that promoting the integrated development of transportation and energy has shifted from single-point technological breakthroughs to the systematic restructuring of “policy–technology–mechanism”. At the policy level， it is necessary to strengthen coordination between national goals and local innovation， and break through constraints on land use and approval. At the technology level， efforts should be made to deepen the dynamic matching of source–grid–load–storage and multi-scenario adaptability， and improve system efficiency through AI prediction. At the mechanism level， it is imperative to accelerate the development of the green electricity trading market and business model innovation. To support the large-scale application of transport-energy integration， a three-dimensional policy framework covering the transportation sector， power sector， and commercial development models should be established： To be specific， a five-in-one policy framework of “planning coordination， approval optimization， standard guidance， land use innovation， and supervision strengthening” should be built at transportation sector to accelerate the deep integration of transportation networks and energy networks； an efficient and secure renewable electricity application system should be established to improve system operation reliability and cross-regional green electricity allocation capacity； an integrated “PV–storage–charging” business model for expressways should be developed to drive the transformation of transport–energy integration from demonstration applications to large-scale and industrialized development.