Urban link travel speed dataset from a megacity road network

Link travel speeds in road networks are fundamental data in many research areas of traffic, transportation, and logistics. To support the research in these areas, we develop a dataset, containing the travel speeds on each road link and in different time periods together with the real road network map. The dataset is collected from a representative megacity in Western China, Chengdu. The road network of this city involves different urban road network structures. The dataset shows the realistic variations and randomness of urban link travel speeds. This enables the research of real data-driven decision-making problems in traffic, transportation and logistics areas.道路网络中的路段旅行速度是交通、运输与物流诸多研究领域的基础性数据。为支撑上述领域的研究工作，我们构建了一款数据集，该数据集包含各道路路段（road link）在不同时段的旅行速度，以及真实的道路网络地图。该数据集采集自中国西部代表性特大城市成都。该城市的道路网络涵盖多种城市道路网络结构类型。该数据集呈现了城市路段旅行速度的真实变化特征与随机性规律。这可为交通、运输及物流领域内基于真实数据的决策问题研究提供支撑。