Accessibility is not a static feature because it is affected by a large number of factors, such as changes in transport infrastructure, the spatial distribution of human activities, and their interdependence. In this study, we examine the role of location quotient-based travel costs as the travel impedance function in accessibility measurement to better capture accessibility changes over time. The travel impedance function is one of the most widely studied aspects of accessibility. In most studies, travel impedance is determined by a negative exponential function in the travel cost assessment of the accessibility measure as a means to incorporate the distance decay effect. Here, we apply an accessibility index that uses location quotient-based travel costs and an accessibility measure with simple travel costs in order to test the proposed theory. The results of the two methods vary considerably. The location quotient method is discussed in detail, including its potential advantages for measuring accessibility changes. We argue that the location quotient-based travel cost is an appropriate method for determining the travel impedance function in accessibility measurements, especially for analyzing accessibility changes.

可访问性不是一个静态功能，因为它受很多因素的影响，例如交通基础设施的变化，人类活动的空间分布及其相互依赖性。在这项研究中，我们研究了基于位置商的出行成本在可访问性测量中作为旅行阻抗函数的作用，以更好地捕获随时间变化的可访问性。行进阻抗功能是可访问性方面研究最广泛的方面之一。在大多数研究中，旅行阻抗是通过可及性度量的旅行成本评估中的负指数函数来确定的，作为合并距离衰减效应的一种手段。在这里，我们应用了一个可访问性指数，该指数使用基于位置商的差旅费和具有简单差旅费的可访问性度量，以检验所提出的理论。两种方法的结果差异很大。详细讨论了位置商方法，包括它在测量可访问性更改方面的潜在优势。我们认为基于位置商的旅行成本是一种确定可访问性测量中的旅行阻抗函数的合适方法，尤其是用于分析可访问性变化的方法。