2021 Issues Vol. 9, No. 2 Vol. 9, No. 1 2020 Issues Vol. 8, No. 2 Vol. 8, No. 1 2019 Issues Vol. 7, No. 3 Vol. 7, No. 2 Vol. 7, No. 1 2018 Issues Vol. 6, No. 3 Vol. 6, No. 2 Vol. 6, No. 1 2017 Issues Vol. 5, No. 3 Vol. 5, No. 2 Vol. 5, No. 1 2016 Issues Vol. 4, No. 3Vol. 4, No. 2Vol. 4, No. 1 2015 Issues Vol. 3, No. 3 Vol. 3, No. 2 Vol. 3, No. 1 2014 Issues Vol. 2, No. 3 Vol. 2, No. 2 Vol. 2, No. 1 2013 Issues Vol. 1, No. 1 Current Issue Current Issue Volume 9, Number 2, 2021 December An Evacuation Model for the Elderly Based on Cellular Automata Model, Tie-Qiao Tang, Peng-Cheng Hu, Xiao-Ting Yuan and Feng Cao (pp. 1-16). Accessibility Analysis of Bus Route and Road Using Space Syntax in Pokhara City, Nepal, Sushil Acharya, Juhyeon Kwak and Seunghyun Kim (pp. 19-32). Performance Analysis of Urban Public Transport Service Enterprise Using Data Envelopment Analysis: The Case of Addis Ababa, Ethiopia, Mulugeta Girma and Berhanu Woldetensae (pp. 33-48). Public Transit System Optimization and Integration, Muluken Kassahun Alemu, Madiha Bencekri and Seungjae Lee (pp. 49-64). Reliability Centered Maintenance for Rolling Stock: A Case Study in DEL and DHL Locomotives of Myanmar Railways, Win Lett Soe and Donggyun Ku (pp. 65-74). Origin-Destination Flow Estimation Using Artificial Neural Networks, Daehyon Kim (pp. 75-82).