1. Department of Civil and Structural Engineering, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia
2. Sustainable Urban Transport Research Centre (SUTRA), Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia
3. School of Civil Engineering, Linton University College, Batu 12, Mantin, 71700 Mantin, Negeri Sembilan, Malaysia