1. Civil and Environmental Engineering Department, Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia
2. Civil and Environmental Engineering Department, Universiti Tun Hussein Onn Malaysia, Batu Pahat, Malaysia
3. Department of Water Resources & Environmental Engineering, University of Ilorin, Ilorin, Nigeria
4. Centre for Accident Research and Road Safety-Queensland, Queensland University of Technology, Brisbane, Australia