01515688

Component

According to the road accidents statistics of Korea, 33% of fatalities in 2011 occurred in winter. As many factors can be the causes of the accidents in winter season, road freezing is the most important factor among them. If a road manager has information or can predict the road surface condition or temperature, the accidents related with road surface freezing can be reduced. In this study, a thermal mapping system was developed to measure road surface temperatures. And the road surface temperature (RST) and air temperature were measured along the various road sections such as normal road sections, bridge, tunnel and cut slope sections in winter. As a result, although the RST in normal paved road sections was higher than air temperature during night time, the RST in bridges and cut slope sections was lower than air temperature. Moreover, the average RST in bridges and cut slope sections showed lower values than in normal paved road sections. In order to compare the RST among each road section, the analysis of variance (ANOVA) test was used and the result showed that the RST for normal paved road section and bridge, cut slope road section has statistical significant difference. In this study, the authors suggest that significant attention is required in bridges and cut slope sections during winter.

This paper was sponsored by TRB committee AH010 Surface Transportation Weather.

01503729

14-2671

English

9p

2014

Transportation Research Board 93rd Annual Meeting

Digital/other

Figures; References; Tables

Analysis of variance; Bridges; Embankments; Mapping; Measurement of specific phenomena; Surface course (Pavements); Surface temperature; Thermal properties; Winter

Thermal mapping

Bridges and other structures; Highways; Maintenance and Preservation; Safety and Human Factors; I23: Properties of Road Surfaces; I62: Winter Maintenance; I82: Accidents and Transport Infrastructure

Transportation Research Board Annual Meeting 2014 Paper #14-2671

TRIS, TRB, ATRI

Jan 27 2014 2:55PM