Grand Paris Express Line 18 Opens Massy-Palaiseau to Christ de Saclay
已延期日期确定性: 已延期日期已变动来源对日期的表述有多确定：已确认、已排期、预估、已推迟或未核实。显示所有“已延期”的图钉延期9周可信度 68%总体可信度: 68%该图钉的来源和参考资料对其日期的支持程度。包括来源在内的 5 份资料对图钉开始和结束时间支持程度的加权平均；资料每比最新的一份旧 180 天，权重减半显示所有可信度为 50%–74% 的图钉The Societe des grands projets says service "pourra intervenir a compter du 30 novembre" after a two-month dry run; Sortiraparis[2][4] says the opening was "originally set for 1 October 2026".
The first stretch of Paris Metro Line 18, the region's first new metro line in thirty years, can start carrying passengers from 30 November 2026, with the opening expected the first week of December. It slipped from 1 October 2026.
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