The high-speed railway (HSR) has affected accessibility at diverse spatial levels. Although previous studies have examined HSR impacts on accessibility and inequality, the price attribute in estimating accessibility is less noted. This study evaluates the effects of HSR on unequal accessibility at the South Korean national level, capital and non-capital regions and according to urban population sizes by comparing ticket prices to time values. There are two major conclusions of this study. First, an increase in time value through national growth or other exogenous conditions maximizes HSR impact and, thus, increases accessibility. For example, when the time value is 9.98 USD/h, the national HSR access inequality is reduced by 0.56%. However, when the time value is 6.02 USD/h, the reduction in the national inequality by the HSR is 0.19%. Second, if considering generalized travel time, HSR impact is maximized in medium cities rather than in large cities. When the time value is 6.02 USD/h (or 9.98 USD/h), the change in inequality between cities is −0.4% (−1.29%) in medium cities, while large cities show a −0.08% (−0.9%) reduction in access inequality.

中文翻译：

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高铁对韩国基于票价的不平等可达性的影响

高速铁路 (HSR) 在不同的空间层次上影响了可达性。尽管之前的研究已经研究了高铁对可达性和不平等的影响，但在估计可达性方面的价格属性却鲜为人知。本研究通过比较票价与时间价值，评估高铁对韩国国家层面、首都和非首都地区以及城市人口规模的不平等可达性的影响。这项研究有两个主要结论。首先，通过国家增长或其他外生条件增加的时间价值最大化了高铁影响，从而增加了可达性。例如，当时间值为 9.98 美元/小时时，全国高铁准入不平等减少 0.56%。然而，当时间值为 6.02 美元/小时时，高铁对全国不平等的减少为 0.19%。第二，如果考虑广义出行时间，高铁对中等城市的影响最大，而不是在大城市。当时间值为 6.02 美元/小时（或 9.98 美元/小时）时，中等城市的城市间不平等变化为 -0.4%（-1.29%），而大城市则为 -0.08%（-0.9%）减少在获取不平等方面。