1. Centre for Transportation Research, Universiti Malaya, Kuala Lumpur 50603, Malaysia
2. Department of Civil Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia
3. Department of Civil Engineering, College of Engineering, Najran University, Najran 66462, Saudi Arabia
4. Building and Construction Engineering Department, Engineering Technical College of Mosul, Northern Technical University, Mosul 41002, Iraq
5. Department of Civil & Environmental Engineering, Universiti Teknologi Petronas, Bandar Seri Iskandar 32610, Perak, Malaysia
6. Department of Civil Engineering, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia