Traffic flow might be limited by cross-traffic which has priority. A typical example of such a situation is a location where cyclists or pedestrians cross a stream of car traffic. Splitting the cross-traffic into two separate sub-streams (for instance left–right and right–left) can increase the capacity of the main stream. This is because it is no longer necessary to have a sufficiently large gap in both sub-streams simultaneously. This paper introduces a method to compute the resulting capacity of roads with cross-traffic. Without loss of generality, we introduce three transformations to simplify computations. These transformations are an important contribution of the paper, allowing us to create scalable graphs for capacity. Overall, the research shows that splitting a crossing stream into two equally large sub-streams increases the capacity of the main stream. If there is place for one vehicle in between two sub-streams, the capacity can increase up to threefold. Even larger gains are possible with more vehicles in between. This paper presents graphs which can be used to find the capacity for generic situations, and can be used for developing guidelines on intersection design.

交通流量可能会受到具有优先权的交叉交通的限制。这种情况的典型例子是骑自行车者或行人穿过汽车交通流的位置。将交叉流量拆分为两个独立的子流（例如左-右和右-左）可以增加主流的容量。这是因为不再需要同时在两个子流中具有足够大的间隙。本文介绍了一种计算交叉交通道路最终通行能力的方法。在不失一般性的情况下，我们引入了三种变换来简化计算。这些转换是本文的重要贡献，使我们能够创建可扩展的容量图。总体，研究表明，将交叉流分成两个同样大的子流会增加主流的容量。如果在两个子流之间有一个车辆的位置，容量可以增加三倍。如果中间有更多车辆，则可能获得更大的收益。本文提供的图表可用于查找一般情况下的容量，并可用于制定交叉路口设计指南。