01627580

Component

Snowdrifts on roads create serious safety problems in Hokkaido, Japan. Snow transport is commonly used to assess hazardous conditions resulting from snowdrifts on road; however, it is difficult for a model to estimate snow transport based on meteorological data, because snow conditions on the road space are complex. The present study objective was to improve the reliability of the differential weighted intensity of power spectrum (DWIPS), which was proposed by Nagata et al. as a way of estimating snow transport based on road images recorded by CCTV cameras along the road. The principle merit of DWIPS is that it enables snow transport to be estimated based on onsite images within the spatial area of the road. The present study used images from five CCTV cameras and meteorological data during the six winters from 2010 to 2015 in Northern Hokkaido. Snow transport estimated by the DWIPS model was compared with that estimated by the Hokkaido model under various blowing snow conditions. The comparison found that the snow transport determined by the DWIPS model better reflected the actual snow particle conditions on the road space than the Hokkaido model did, because the DWIPS model included the onsite conditions. It might be concluded that the DWIPS model has great potential for measurement of snow transport along the road.

This paper was sponsored by TRB committee AHD65 Standing Committee on Winter Maintenance.

01618707

17-06049

English

20p

2017

Transportation Research Board 96th Annual Meeting

Digital/other

Figures; References; Tables

Closed circuit television; Image analysis; Mathematical models; Methodology; Snowdrifts

Hokkaido (Japan)

Highways; Maintenance and Preservation

Transportation Research Board Annual Meeting 2017 Paper #17-06049

TRIS, TRB, ATRI

Dec 8 2016 12:26PM