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National Highway 5
(Yakumo)

Enlarged
12-mm depth
National Highway 275
(Tsukigata)

National Highway 275
(Tsukigata)

National Highway 5
(Otaru)

National Highway 44
(Kushiro Town)

National Highway 237
(Kamifurano)

National Highway 230
(Sapporo)

Winter road surface condition on National Highway 5
(Yakumo)

Installation at the centerline, National Highway 276
(Chitose)

Full view of installation

Enlarged
15-mm depth
National Highway 276
(Chitose)

National Highway 276
(Chitose)

National Highway 276
(Chitose)

National Highway R238
(Wakkanai)

National Highway 231
(Mashike)

Installation at the shoulder, National Highway 231
(Mashike)

Information sign on rumble strips, National Highway 238
(Wakkanai)

Motorcycle test ride
(Tomakomai Winter Test Track)

Bicycle test ride
(Tomakomai Winter Test Track)

Braking test on winter road surface
(Tomakomai Winter Test Track)