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玉山群峰線

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On the Southern Cross-Island Highway, Provincial Highway No. 20 (Temporary Route 105), from 0K to 44K (Meishankou–Xiangyang section), the road is closed to traffic every Tuesday, Wednesday, and Thursday.

The road is open to traffic from Friday to Monday.Open to motorcycles and vehicles with 9 seats or fewer; pedestrian hiking and bicycles are not permitted Entry is permitted daily from 07:00 to 14:00, and all vehicles must exit the controlled section before 17:00.

Latest updates are available on the Jiaxian Construction Section website:
https://thbu3.thb.gov.tw/News_Content_table.aspx?n=4796&s=285993

For real-time provincial highway information, please visit the Highway Bureau Intelligent Provincial Highway Information Service website:
https://168.thb.gov.tw/thb168

Provincial Highway No. 21 from 110K to 144K (Caopingtou–Tataka section) is closed to traffic daily from 17:30 to 07:00 the following day, and reopened at 07:00 each morning.

For the newly constructed rock shed tunnel at 132K+300 on Provincial Highway No. 21, from October 31, 2026 to February 16, 2027,
1.Monday to Sunday:
Traffic control will be implemented from 08:00 to 17:00, with traffic released once every hour on the hour. Only vehicles that have already arrived and queued at the control checkpoints (both before and after the work zone) prior to the release time will be permitted to pass. The section will be closed again immediately after all queued vehicles have cleared. Traffic control will not be enforced from 12:00 to 13:00.

2. Consecutive Holidays (including the day before the 2026 "Nine-in-One" Local Elections):
In principle, no construction traffic control will be enforced. Traffic personnel will be stationed on-site to direct single-lane, alternating two-way traffic.

Map location:
https://maps.app.goo.gl/QYUATj9dURBK9GGk7