优胜美地 Tioga Road 起临时关闭：高山路段进入冬季过渡期、暂未公布重开日期
国家公园管理局 NPS 通告：优胜美地国家公园内的 Tioga Road 自10月21日下午5时起临时关闭，暂未公布重开日期。关闭路段为穿越公园北部的高山公路，即120号公路的园内段。
Tioga Road 连接 Tuolumne Meadows、Tenaya Lake 与 Tioga Pass，是车辆穿越优胜美地、通往 Sierra Nevada 山脉东侧的通道。关闭后，驾车游客无法再经该路从东侧横穿公园；公园西侧与南侧的入口道路不受影响，优胜美地山谷仍可经 El Portal Road、Wawona Road 以及西侧的 Big Oak Flat 路线抵达。通往高海拔徒步起点与观景点的行程则需另行调整。
园方将此次关闭定性为冬季过渡期的运行安全措施：高山路段在正式季节性关闭确立之前，降雪与结冰已可使路面变得不安全。计划在未来数日往返公园与 Sierra 东侧社区的游客，出行前应查询园方最新路况通告。
Yosemite's Tioga Road Closes Temporarily from 5 p.m. on October 21; No Reopening Date Announced
The National Park Service (NPS) has announced that Tioga Road in Yosemite National Park closed temporarily from 5 p.m. on October 21, with no fixed reopening date announced. The closed route is the high-country road through the northern part of the park, part of Highway 120.
Tioga Road runs toward Tuolumne Meadows, Tenaya Lake and Tioga Pass and provides the vehicle route across Yosemite to the eastern Sierra Nevada. Once the closure begins, drivers cannot use the road to cross the park from the eastern side. Yosemite Valley remains accessible from the west and south: approach roads include El Portal Road from the west, Wawona Road from the south, and the Big Oak Flat route on Highway 120 from the west. Trips that depend on high-elevation trailheads and viewpoints along Tioga Road need to be reconsidered separately from a visit to the Valley floor.
The park service is treating the October 21 closure as an operational safety change close to the usual winter transition for the high country: snow and ice can make the route unsafe before a regular seasonal closure is formally established. Visitors planning to travel between the park and communities on the eastern side of the Sierra in the coming days should check the park's latest conditions notice before setting out.
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图片来源：图：优胜美地120号公路（资料图）。维基共享资源，CC BY-SA 3.0。
GSM Global · 本篇英文版 English edition of this story
