Hazard and Risk of Highway Maintenance Works: Case Study of PLUS ExpresswaysAsmalia Che Ahmad, Ida Nianti Mohd Zin, Mohamad Nasrin Rosli, Abdul Muhaimin Ab Wahid and Izatul Farrita Mohd KamarMATEC Web Conf., 66 (2016) 00106DOI: https://doi.org/10.1051/matecconf/20166600106