Provincial Highway 8 Construction Traffic Control Information Central Cross-Island Highway (Provincial Highway 8) Eastern Section
Dayuling – Taroko Entrance Traffic Control
Measures for October 2026

October 2026 — Provincial Highway 8 Construction Traffic Control Information
Central Cross-Island Highway (Provincial Highway 8) Eastern Section
Dayuling – Taroko Entrance Traffic Control Measures for October 2026

Following the April 3, 2024 earthquake, the Taroko Maintenance Section of the Eastern Region Branch, Highway Bureau, has continued emergency repair and reconstruction works. To balance the progress of road repair and reconstruction with the transportation needs of local industries and road users, representatives of residents from the Greater Tianxiang area, industry associations, businesses, relevant government agencies, and civil/geotechnical engineering consultants familiar with the Central Cross-Island Highway are invited to meet in the latter part of each month to jointly discuss traffic control measures for the following month.

Following the meeting held on September 23, the traffic control measures for October 2026 are as follows:

1. Guanyuan – Tianxiang

Provincial Highway 8 (114.6 km – 167.1 km)

(1) Traffic Opening Hours
Two-way traffic is permitted daily from 06:30 to 16:30.

Traffic Control Points:

West End: In front of the Guanyuan Hehuan Police Station at 114.6 km
East End: Tianxiang at 167.1 km

(2) Road Clearance Period
16:30–18:30 daily.

No vehicles may enter the controlled section. Vehicles already inside the section may exit only.

(3) Nighttime Closure
18:30–06:30 the following day.

The road is closed nightly.

(4) Construction Control Sections

At 112.6 km (Guanyuan Section) and 140 km and 140.280 km (Xinbaiyang Section), traffic will generally be released once every hour, coordinated with the arrival of the main traffic flow from the five scheduled traffic release periods at the Tianxiang end.
At 157.7 km (Horan Pavilion Section), traffic will be released in coordination with the five scheduled traffic release periods at the Tianxiang end:
06:30–08:00
09:45–10:30
12:00–13:00
14:45–15:30
17:00–18:00
2. Tianxiang – Taroko Entrance

Provincial Highway 8 (167.7 km – 184.5 km)

(1) Traffic Opening Hours
Two-way traffic is permitted during five scheduled traffic release periods between 06:30 and 18:00:

06:30–08:00
10:00–10:05
12:00–13:00
15:00–15:05
17:00–18:00

Traffic Control Points:

West End: West side of Lushui Shuiwen Bridge at 169.5 km
East End: East portal of Shakadang Tunnel

(2) Road Clearance Period
18:00–18:30 daily.

No vehicles may enter the controlled section. Vehicles already inside the section may exit only.

(3) Nighttime Closure
18:30–06:30 the following day.

Traffic Control Points:

West End: Tianxiang at 167.7 km
East End: East portal of Shakadang Tunnel and Taroko Entrance at 184.5 km

(4) Construction Control Sections

At the five construction zones at 172.2 km (west portal of Jiuqudong Tunnel), 173.5 km (east portal of Jiuqudong Tunnel), 174.9 km (east portal of Zhuilu Tunnel), 175.5 km (west portal of Jinheng Tunnel), and 180.5 km (west end of Ning'an Bridge), traffic will be released five times in coordination with the scheduled traffic release periods between Tianxiang and Taroko Entrance, or temporary traffic control will be implemented depending on construction conditions.
During each scheduled traffic release period, the construction zones before and after the controlled sections will coordinate with one another. As a general principle, all vehicles that have arrived and are waiting at both ends of the construction zones before the scheduled release will be allowed to pass through before construction traffic control resumes.

(5) Traffic Diversion

The section between Taroko Entrance and Changchun Tunnel continues to operate under traffic diversion measures:

Westbound (Taroko → Tianxiang):
Shakadang Tunnel (Taroko National Park Headquarters) → Xila'an Tunnel → Changchun Tunnel (Provincial Highway 8) → Tianxiang
Eastbound (Tianxiang → Taroko):
Provincial Highway 8 → Changchun Tunnel → Taroko Entrance
3. Other Temporary or Mobile Construction Areas

Other temporary or mobile construction works, such as asphalt pavement milling and resurfacing, will be scheduled in coordination with nearby construction zones and the traffic release periods at Guanyuan, Tianxiang, and Taroko Entrance.

To minimize impacts on road users, short-duration traffic controls may be implemented as needed, or separate traffic control measures will be announced.

4. Adjusted Traffic Control Measures for the Double Tenth Day Holiday

To meet increased transportation demand during the Double Tenth Day long weekend, traffic control measures will be adjusted from October 9 (Friday) through October 11 (Sunday), 2026, as follows:

(1) Guanyuan – Tianxiang
Provincial Highway 8 (114.6 km – 167.1 km)

Traffic Opening Hours: Two-way traffic is permitted daily from 06:30 to 16:30.
Road Clearance Period: 16:30–18:00 daily. No vehicles may enter the controlled section. Vehicles already inside the section may exit only.
Nighttime Closure: 18:30–06:30 the following day.

(2) Tianxiang – Taroko Entrance
Provincial Highway 8 (167.1 km – 184.5 km)

Traffic Opening Hours: Two-way traffic is permitted daily from 06:30 to 18:00.
Road Clearance Period: 18:00–18:30 daily. No vehicles may enter the controlled section. Vehicles already inside the section may exit only.
Nighttime Closure: 18:30–06:30 the following day.

(3) Regular traffic control measures will resume starting October 12 (Monday).

5. Adjusted Traffic Control Measures for the Taiwan Retrocession Day Holiday

To meet increased transportation demand during the Taiwan Retrocession Day long weekend, traffic control measures will be adjusted from October 24 (Saturday) through October 26 (Monday), 2026, as follows:

(1) Guanyuan – Tianxiang
Provincial Highway 8 (114.6 km – 167.1 km)

Traffic Opening Hours: Two-way traffic is permitted daily from 06:30 to 16:30.
Road Clearance Period: 16:30–18:00 daily. No vehicles may enter the controlled section. Vehicles already inside the section may exit only.
Nighttime Closure: 18:30–06:30 the following day.

(2) Tianxiang – Taroko Entrance
Provincial Highway 8 (167.1 km – 184.5 km)

Traffic Opening Hours: Two-way traffic is permitted daily from 06:30 to 18:00.
Road Clearance Period: 18:00–18:30 daily. No vehicles may enter the controlled section. Vehicles already inside the section may exit only.
Nighttime Closure: 18:30–06:30 the following day.

(3) Regular traffic control measures will resume starting October 27 (Tuesday).

Travel Advisory

The Taroko Maintenance Section particularly reminds motorists traveling between Dayuling and Taroko Entrance (approximately 74 km) to plan their journeys carefully according to the traffic control schedule.

Eastbound (Dayuling → Taroko):
Drivers are advised to arrive at Tianxiang no later than 17:00 in order to catch the final traffic release period from 17:00 to 18:00 at Tianxiang.

Westbound (Taroko → Dayuling):
Drivers are advised to pass through the traffic control station at the east portal of Shakadang Tunnel by 15:00 to avoid being unable to pass the Guanyuan control point before the nighttime road closure at 18:00.

The eastern section of the Central Cross-Island Highway (Provincial Highway 8) continues to undergo emergency repair and reconstruction works for slopes, roadbeds, and pavement damaged by the earthquake and typhoons.

Traffic release periods may be delayed or cancelled due to adverse weather conditions or unexpected incidents. Motorists are advised to plan their journeys carefully and make contingency arrangements. Please monitor weather forecasts and the latest road traffic control and road accessibility information.

For the latest road information, motorists are encouraged to use the Highway Bureau Smart Provincial Highway Real-Time Information Service or download the “Happy Highway APP” and listen to highway traffic broadcasts for updates.

The Highway Bureau wishes everyone a safe journey!

Responsible Unit: Taroko Maintenance Section
Road Information Hotline: 03-9962683
Contact Person: Section Chief Chang Pei-Yun (03-8610775)

Last Updated: September 30, 2026

For the latest highway information, please contact the Taroko Maintenance Section of the Highway Bureau.

Management Authority

For the Central Cross-Island Highway (Provincial Highway 8), please contact:

Taroko Maintenance Section: 03-8610775
Eastern Region Branch, Highway Bureau: 03-9962683
Update Information

The above information is current as of September 30, 2026. Should any changes occur, please contact the management authority for the latest information.

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Provincial Highway 14A (24 km–32 km, Yuanfeng–Mt. Hehuan Visitor Center): Road Maintenance Works

Road maintenance works, including pavement leveling and invasive plant removal, will be carried out across all lanes on the Provincial Highway 14A section between 24 km and 32 km, from Yuanfeng to the Mt. Hehuan Visitor Center.
The works will be conducted daily from 08:00 to 17:00, from September 21 to October 15, 2026. Traffic will be subject to mobile traffic control. No work will be conducted on weekends or national holidays.
 
Road users are advised to slow down, wait patiently, and follow the instructions of traffic control personnel. The Highway Bureau reminds road users traveling through the above-mentioned section to pay close attention to roadside variable message signs. The Traffic Control Center of the Central Region Branch will provide updates on traffic conditions and driving recommendations as necessary.

For information on traffic diversion measures and real-time road conditions, please visit the Highway Bureau website, the Provincial Highway Real-Time Traffic Information website, use the Happy Highway App, or call the Road User Service Hotline at 0800-231-035.

The Highway Bureau wishes you a safe journey.

Responsible Office: Puli Maintenance Section, Central Region Branch, Highway Bureau

Road Condition Inquiry:
049-2982066

Contact Person: Section Chief Chiu Ping-jung

For the latest highway information: Please contact the Highway Bureau.

Last Updated: September 30, 2026

Managing Units: 
For the Central Cross-Island Highway Wushe Branch Road  (Tai 14A), please contact the Taroko Maintenance Section at 03-8610775 or the Puli Maintenance Section at 049-2982066.

Update Information:
Information is current as of September 30, 2026. In case of any changes, please contact the relevant managing unit for the latest information.

Update Notes

This information is current as of September 30, 2026. If there are any changes, please contact the relevant managing authorities to verify the latest information. 

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Provincial Highway 9 (Su-hua Highway) Construction Traffic Control Information
Traffic Opening / Construction Control

1. Provincial Highway 9 Suhua Highway Improvement Project: Su'ao–Dong'ao Section Traffic Control

From 21:00 on October 19 to 06:00 the following day, the northbound lanes will be closed. Please detour via Provincial Highway 9D.

From 21:00 on October 20 to 06:00 the following day, the southbound lanes will be closed. Please detour via Provincial Highway 9D.

2. Provincial Highway 9, 104 km+100–158 km+100 (Suhua Highway Improvement Project, Su'ao end to Renshui Tunnel, excluding the tunnel): Cleaning of Traffic Safety Facilities

October 20–21, daily from 08:00 to 17:00. Mobile traffic control will be implemented.

3. Provincial Highway 9, 113 km+400–124 km+500 (Dong'ao–Nan'ao Section): Cleaning of Traffic Safety Facilities

October 15, from 08:00 to 17:00. Mobile traffic control will be implemented.

4. Provincial Highway 9D, 9 km+400 (Jiugongli Section): Drainage Culvert and Pavement Improvement Works

September 10–November 30, daily from 08:00 to 17:00. Alternating one-way traffic with mobile traffic control will be implemented.

5. Provincial Highway 9D, 2 km–17 km+500 (Su'ao–Dong'ao Section): Cleaning of Traffic Safety Facilities

October 12, from 08:00 to 17:00. Mobile traffic control will be implemented.

6. Provincial Highway 9, 116 km+100 (Dong'ao Section): Slope Trimming Works

October 5–30, daily from 09:00 to 17:00. Mobile traffic control will be implemented.

7. Provincial Highway 9, 117 km+500–118 km+800 (Xin'ao Tunnel): Cleaning of Traffic Facilities Inside the Tunnel

October 15, from 08:00 to 17:00. Mobile traffic control will be implemented.

8. Provincial Highway 9, 120 km+700 (Nan'ao Section): Slope Works

September 21–23 and September 29–October 2, daily from 08:00 to 17:00. Alternating one-way traffic will be implemented.

9. Provincial Highway 9D, 29 km–45 km (Nan'ao–Guanyin Section): Cleaning of Traffic Safety Facilities

October 7, from 08:00 to 17:00. Mobile traffic control will be implemented.

10. Provincial Highway 9D, 39 km+800 (Guanyin Section): Drainage Culvert Installation Works

September 29–October 30, daily from 08:00 to 17:00. Mobile traffic control will be implemented.

11. Provincial Highway 9D, 44 km+300–44 km+900 (Guanyin Section): Taiwan Power Company Utility Pole Undergrounding Improvement Works

September 18–October 30, daily from 09:00 to 17:00. Alternating one-way traffic with mobile traffic control will be implemented.

12. Provincial Highway 9D, 45 km–65 km (Guanyin–Heping Section): Cleaning of Traffic Safety Facilities

October 6, from 08:00 to 17:00. Mobile traffic control will be implemented.

13. Provincial Highway 9D, 51 km+900–52 km+400 (Aohua Tunnel): Cleaning of Traffic Facilities Inside the Tunnel

October 15, from 08:00 to 17:00. Mobile traffic control will be implemented.

14. Provincial Highway 9 Suhua Highway Improvement Project: Heping–Heren Section Traffic Control

From 21:00 on October 5 to 06:00 the following day, the northbound lanes will be closed. From 21:00 on October 6 to 06:00 the following day, the southbound lanes will be closed. Please detour via Provincial Highway 9D.
From 08:00 to 17:00 on October 13, the tunnel will be closed. Please detour via Provincial Highway 9D.

15. Provincial Highway 9D, 60 km+300–63 km+300 (Heping Tunnel–Heren Tunnel Section, including covered roadways): Cleaning of Traffic Facilities Inside the Tunnels

October 14 and 19, daily from 08:00 to 17:00. Mobile traffic control will be implemented.

16. Provincial Highway 9D, 60 km+316–61 km+156 (Heping Tunnel): Tunnel Lighting Maintenance

September 29–October 7, daily from 20:00 to 05:00 the following day. Alternating one-way traffic will be implemented.

17. Provincial Highway 9D, 61 km+200–61 km+550 (Heping Section): Slope Trimming Works

September 10–October 7, daily from 08:00 to 17:00. Alternating one-way traffic with mobile traffic control will be implemented. However, two-way road closures may be implemented depending on on-site conditions and construction requirements.

18. Provincial Highway 9 Suhua Highway Improvement Project: Heren–Daqingshui Section Traffic Control

From 09:00 to 12:00 on October 7, the southbound lanes will be closed. From 12:00 to 15:00 on October 7, the northbound lanes will be closed. Alternating one-way traffic will be implemented.

19. Provincial Highway 9, 104 km+100–158 km+100 (Suhua Highway Improvement Project, Su'ao end to Renshui Tunnel, excluding the tunnel): Cleaning of Traffic Safety Facilities

October 20–21, daily from 08:00 to 17:00. Mobile traffic control will be implemented.

20. Provincial Highway 9, 158 km+630–160 km+400 (Daqingshui Tunnel–Jinwen Tunnel, including covered roadways): Cleaning of Traffic Facilities Inside the Tunnels

October 14 and 19, daily from 08:00 to 17:00. Mobile traffic control will be implemented.

21. Provincial Highway 9, 161 km+300–163 km+400 (Huide Tunnel–Chongde Tunnel Section): Cleaning of Traffic Facilities Inside the Tunnels

October 19, from 08:00 to 17:00. Mobile traffic control will be implemented.

22. Provincial Highway 9, 160 km–167 km (Renshui Tunnel–Chongde Section): Cleaning of Traffic Safety Facilities

October 6, from 08:00 to 17:00. Mobile traffic control will be implemented.

Road Safety Advisory

Mountain roads are prone to rockfalls due to the effects of earthquakes. In the event of heavy or prolonged rainfall, road conditions may be difficult to predict. Unless necessary, please avoid entering mountainous roads after a disaster.

Please stay informed of weather conditions and road accessibility information, plan your journey in advance, and make contingency arrangements.

For the latest road information, please use the Highway Bureau's Smart Provincial Highway Real-Time Information Service, download the “Happy Highway APP,” or listen to highway traffic broadcasts.

The Highway Bureau wishes you a safe journey!

Last Updated: October 6, 2026

Management Authority

For the Su-hua Highway (Provincial Highway 9), please contact:

Nan'ao Maintenance Section: 03-9982161
Jinyue Maintenance Section: 03-9982501
Eastern Region Branch, Highway Bureau: 03-9962683
Update Information

The above information is current as of October 6, 2026. If there are any changes, please contact the management authority for the latest information.