Quantifying transit resources and its networkwide temporal distribution is needed for the informed transit planning and operations decisions. One effective way to estimate the transit resource provision to a zone is to calculate the transit supply index. However, in literature, Supply Index (SI) is modelled considering the transit services allocated to a zone and ignores the quality and quantity of the supply provided between two zones. Addressing this need, this paper proposes a novel origin-destination based supply index (odSI) that incorporates a) zonal characteristics such as transit routes operate in origin zone, number of trips made by those routes, walk buffer areas of transit stops, and the total area of the zone; b) the quality of the service provided in terms of the average speed and route straightness ratio; and c) origin-destination dependent variables such as the minimum number of transfers needed to travel between two zones, the average transit speed between those zones, straightness of transit routes, and total available capacity. As proof of concept, the proposed odSI model is applied on the real network from Brisbane, Australia, at Statistical Area-2 level. The odSI results for 136 × 136 zonal pairs are presented for four different time periods (two peak and two off-peak periods). Furthermore, detailed analysis is carried for a zone, Grange, as an origin and the remaining 135 zones as destinations. The applicability of the proposed odSI model on Brisbane demonstrates its capability to provide valuable insights for an extensive network, which can help planners visualise and improve the complex and cumbersome networks in a more effective manner.

量化运输资源及其在网络范围内的时间分布，对于明智的运输计划和运营决策是必需的。估算向某个区域提供的过境资源的一种有效方法是计算过境供应指数。但是，在文献中，供应指数（SI）的建模考虑了分配给一个区域的中转服务，而忽略了两个区域之间提供的供应的质量和数量。为满足这一需求，本文提出了一种新颖的基于原点目的地的供应指数（odSI），该指数结合了a）区域特征，例如在原点区域内运行的过境路线，这些路线的出行次数，过境站的步行缓冲区以及区域总面积；b）根据平均速度和路线平直度比提供的服务质量；c）与原产地有关的变量，例如在两个区域之间旅行所需的最少换乘次数，这些区域之间的平均过境速度，过境路线的平直度和总可用容量。作为概念验证，将提议的odSI模型应用于来自澳大利亚布里斯班的真实网络的统计区域2级别。136个136个区域对的odSI结果显示了四个不同的时间段（两个高峰时段和两个非高峰时段）。此外，针对区域Grange作为起点进行了详细分析，而将其余135个区域作为目的地进行了详细分析。所提议的odSI模型在布里斯班的适用性证明了其为广泛的网络提供有价值的见解的能力，这可以帮助计划人员以更有效的方式可视化并改善复杂而繁琐的网络。