The 9th International Conference on Railway Operations Modelling and Analysis (RailBeijing 2021) will be held in Beijing, China, on November 3rd-7th, 2021. The updated Call for Papers is out now. The deadline for paper submission has been extended to March 15, 2021. Again there will be the possibility for submitting research papers and professional papers. For full details, see the conference website www.railbeijing2021.com