Research on effectiveness of reflective rings forsmall radius circle curve road section of expressway tunnels
YANG Libo, DU Zhigang, MA Zhaoyou, XIE Jun, XU Wanwan
China Safety Science Journal . 2018, (8): 149 -154 .  DOI: 10.16265/j.cnki.issn1003-3033.2018.08.025