| In line with the social need to ensure safe and reliable traffic flow、 anti-freeze agents and anti-slip materials are spread to prevent road surface freezing and combat black ice formation on road surfaces in early and late winter in Japan’s cold、 snowy region of Hokkaido. However、 meltwater from accumulated snow on road shoulders of curved sections may hinder traffic safety by flowing onto carriageways and freezing at night.[*]This paper proposes a method of grooving road shoulders in the longitudinal direction as a way to eliminate meltwater from snow that has accumulated on shoulders and prevent the formation of black ice on carriageway surfaces、 and presents the results of a study on the technique’s water-interception effect. Also outlined are the results of investigation to confirm the safety of bicycle operation on shoulder grooving. |
