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Sections closed to traffic when adverse weather is predicted
--Northern Hokkaido--
Central Hokkaido - Southern Hokkaido - Northern Hokkaido - Eastern Hokkaido

Section closed to traffic
Locations in disaster-prone areas that are closed to traffic when certain pre-set conditions are met (precipitation, etc.) during adverse weather
Special traffic control section
Locations closed to traffic based on patrol reports showing possible hazard restulting from local weather conditons.
In the event of adverse weather, the road is subject to temporary closure. Thank you for your cooperation.
Roadside broadcasting
Special radio channel providing timely information concerning the present location via car radio.



Criteria for closure to traffic (2004)
No. Route Precipitation Length Causes
1 39 50mm 19.2km Landslide, Rockfall
8 232 80mm

4.9km

Landslide
9 239 80mm 18.6km Rockfall, Landslide, Avalanche
11 273 100mm 12.0km Rockfall, **
16 451 100mm 5.0km Rockfall, Avalanche, Landslide

Special criteria for closure to traffic (2004)
No. Route Length Causes
1 12 3.7km Flooding
2 39 6.9km Rockfall
3 39 9.9km Rockfall, Avalanche
4 40 18.0km Avalanche
8 231 4.6km Rockfall, Avalanche
9 231 4.8km Rockfall, Avalanche
14 333 14.4km Avalanche

For detailed road information, please contact the nearest branch of Japan Road Traffic Information Center.

 

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