This study aims to examine to what extent sustainability has been incorporated into assessments of road infrastructure projects. It identifies promising approaches that include indicators reflecting core sustainability criteria, determines criteria that were insufficiently covered as indicators, and develops an integrated indicator set covering all criteria. A systematic review was performed to obtain all related papers/reports in two academic databases: Scopus and Web of Sciences. The indicators extracted from papers/reports were first coded, then evaluated by using quantitative and qualitative content analysis. The project appraisal methods for decision-making is found to be a promising approach, covering more extensive criteria than others. Two criteria – namely adaptation and precaution and intergenerational equity – were hardly ever adopted as indicators. Ten main groups of indicators were extracted to construct an integrated set incorporating all core criteria. Some criteria appear to have become mainstream, while others deserve attention. The safest choice is to combine methods/tools or to adopt the integrated set developed for exhaustive criteria inclusion.

中文翻译：

---

系统评估指标以评估道路基础设施项目的可持续性

这项研究旨在研究在何种程度上将可持续性纳入道路基础设施项目评估中。它确定了有前途的方法，其中包括反映核心可持续性标准的指标，确定未被充分涵盖的指标作为指标，并制定涵盖所有标准的综合指标集。进行了系统的审查，以在两个学术数据库：Scopus和Web of Sciences中获得所有相关的论文/报告。首先对从论文/报告中提取的指标进行编码，然后通过定量和定性的内容分析进行评估。决策的项目评估方法被认为是一种很有前途的方法，涵盖了比其他方法更广泛的标准。几乎没有采用两个标准，即适应和预防以及代际公平作为指标。提取了十个主要指标组，以构建包含所有核心标准的综合指标集。一些标准似乎已成为主流，而另一些标准则值得关注。最安全的选择是组合方法/工具或采用为详尽的标准开发而开发的集成套件。