标题： 一种用于量化道路网络路径多样性的计算框架 显示英文标题

标题： A computational framework for quantifying route diversification in road networks

摘要： 道路网络的结构影响各种城市动态，从交通拥堵到环境可持续性和基本服务的可及性。 最近的研究表明，大多数道路利用率低下，更快的替代路线经常被忽视，交通通常集中在少数通道上。 在本文中，我们研究道路网络结构，特别是移动吸引物（例如高速公路和环路）的存在，如何塑造交通集中度的对应面：路线多样化。 为此，我们引入了DiverCity，这是一种衡量交通可能分布在多个松散重叠的近最短路线上的程度的指标。 分析56个多样化的全球城市，我们发现 DiverCity受网络特征的影响，并与交通效率相关。 在城市内部，DiverCity随着距离城市中心的距离增加而增加，但在郊区稳定下来，但在移动吸引物附近则下降。 我们证明，在移动吸引物上进行有针对性的速度限制调整可以提高DiverCity，同时保持出行效率。 我们通过在受控环境中进行的模拟，隔离了移动吸引物和 DiverCity之间的复杂相互作用，确认了在现实城市中观察到的模式。 DiverCity为城市规划者和政策制定者提供了一个实用工具，以优化道路网络设计并平衡路线多样化、效率和可持续性。 我们提供了一个交互式平台（https://divercitymaps.github.io）来可视化所有考虑城市中DiverCity的空间分布。 显示英文摘要

摘要： The structure of road networks impacts various urban dynamics, from traffic congestion to environmental sustainability and access to essential services. Recent studies reveal that most roads are underutilized, faster alternative routes are often overlooked, and traffic is typically concentrated on a few corridors. In this article, we examine how road network structure, and in particular the presence of mobility attractors (e.g., highways and ring roads), shapes the counterpart to traffic concentration: route diversification. To this end, we introduce DiverCity, a measure that quantifies the extent to which traffic can potentially be distributed across multiple, loosely overlapping near-shortest routes. Analyzing 56 diverse global cities, we find that DiverCity is influenced by network characteristics and is associated with traffic efficiency. Within cities, DiverCity increases with distance from the city center before stabilizing in the periphery, but declines in the proximity of mobility attractors. We demonstrate that strategic speed limit adjustments on mobility attractors can increase DiverCity while preserving travel efficiency. We isolate the complex interplay between mobility attractors and DiverCity through simulations in a controlled setting, confirming the patterns observed in real-world cities. DiverCity provides a practical tool for urban planners and policymakers to optimize road network design and balance route diversification, efficiency, and sustainability. We provide an interactive platform (https://divercitymaps.github.io) to visualize the spatial distribution of DiverCity across all considered cities.