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Characteristics of winter roads in Hokkaido : Case study in the Sapporo urban area Azuta, Yoichi ; Asano, Motoki ; Takahashi, Wataru

By: Contributor(s): Language: English Language: French Series: ; topic III-157Publication details: XIth international winter road congress 2002. Sapporo [Japan] / XIe congres international de la viabilite hivernale 2002, Sapporo [Japon]. Paper, 2002Description: 10 sSubject(s): Bibl.nr: VTI 2002.0071Location: Abstract: Greater Sapporo exceeds 2 million in population and is the center of Hokkaido prefecture. Although the region is located more southerly than much of North America and most of Europe, it features a cold snowy climate with an average annual snowfall of almost 5 meters. Considering the scale of Greater Sapporo, its severe winter climate poses a challenge in the securing of road traffic there. To clarify the current conditions of winter road traffic in Greater Sapporo, the study conducted a winter road condition survey as an empirical survey method and an aerial photography survey as a trial method. The validity of these as methods of winter road survey was examined. The survey results clarified the fundamental characteristics of winter road traffic in Greater Sapporo and provided a basis to consider winter road traffic measures. Based on the aerial photograph survey and the winter road condition survey, the following was clarified: (1) comparison of traffic conditions in summer with those in winter showed that congestion in winter is more remarkable than that in summer; (2) characteristics of various traffic conditions could be illustrated; (3) by comparing data from aerial photographs with census data, the degree of congestion was clarified; (4) through vehicle-by-vehicle analysis of three routes, the conditions of the routes could be differentiated; (5) by choosing National Highway 36 and making a detailed analysis of data, congestion was found to occur near major intersections; and (6) analysis of aerial photographs proved highly effective for clarifying areal traffic conditions.
Item type: Reports, conferences, monographs
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Greater Sapporo exceeds 2 million in population and is the center of Hokkaido prefecture. Although the region is located more southerly than much of North America and most of Europe, it features a cold snowy climate with an average annual snowfall of almost 5 meters. Considering the scale of Greater Sapporo, its severe winter climate poses a challenge in the securing of road traffic there. To clarify the current conditions of winter road traffic in Greater Sapporo, the study conducted a winter road condition survey as an empirical survey method and an aerial photography survey as a trial method. The validity of these as methods of winter road survey was examined. The survey results clarified the fundamental characteristics of winter road traffic in Greater Sapporo and provided a basis to consider winter road traffic measures. Based on the aerial photograph survey and the winter road condition survey, the following was clarified: (1) comparison of traffic conditions in summer with those in winter showed that congestion in winter is more remarkable than that in summer; (2) characteristics of various traffic conditions could be illustrated; (3) by comparing data from aerial photographs with census data, the degree of congestion was clarified; (4) through vehicle-by-vehicle analysis of three routes, the conditions of the routes could be differentiated; (5) by choosing National Highway 36 and making a detailed analysis of data, congestion was found to occur near major intersections; and (6) analysis of aerial photographs proved highly effective for clarifying areal traffic conditions.

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