fa Railway track and structures Railway track and structures پژوهشي Research Considering various factors like energy consumption and travel time, speed profile optimization is regarded as a non-linear, complex multi-objective problem. In this paper, a novel approach based on the Bees algorithm (BA) is proposed to solve train speed profile optimization. In this approach, BA is modified as a non-dominated sorting BA (NSBA) which produces a population that conducts a semi-stochastic search algorithm to determine critical points for acceleration changes forming a raw template as a trajectory. Afterward by local optimizations, the trajectory is amended to meet ending requirements. The simulation results indicate on effectiveness and excellence of the proposed method. Speed profile optimization, Non-dominated sorting bees algorithm, Balanced optimization 25 32 http://ijrare.iust.ac.ir/browse.php?a_code=A-10-84-4&slc_lang=fa&sid=1 Pedram Havaei 180031947532846002354 180031947532846002354 Yes Department of Control Engineering and Signaling, School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran Department of Control Engineering and Signaling, School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran Mohammad Ali Sandidzadeh sandidzadeh@iust.ac.ir 180031947532846002355 180031947532846002355 No Department of Control Engineering and Signaling, School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran Department of Control Engineering and Signaling, School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran