MOSS: MObility Simulation System

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A GPU-accelerated Large-scale Open Microscopic Traffic Simulation System

Online Wizard Website: https://moss.fiblab.net

Features

  • Efficient: MOSS adopts GPU as the computational engine, which accelerates 100 times compared to existing microscopic traffic simulators, allowing rapid simulation of large-scale urban road networks.

  • Realistic: MOSS provides the cutting-edge AIGC method to generate globally available realistic OD matrices for travel demand generation and allows the user to quickly calibrate the simulation parameters to obtain realistic simulation results.

  • Open: The simulator, toolchain, and sample programs will be open-sourced on Github for community access, and we hope that more people will join in the development and application of MOSS.

Awesome MOSS

The related repositories of MOSS are as follows:

  • cityproto: The protobuf-driven data structure definition for all city simulation projects of FIBLAB, URL. The project provides C/C++, Golang, Python, and Javascript/Typescript interfaces to access the data structure. (match python-moss>=1.0.0)

  • mosstool: The toolchain for MOSS, URL. The project is a Python packages that includes map building, traffic demand generation, SUMO format conversion, and some format conversion utilities. It is the key to build the input of MOSS. (match python-moss>=1.0.0)

  • routing: A gRPC-powered routing service with A* shortest path algorithm, URL. The project is the necessary service for mosstool when generating traffic demand or just calling pre_route functions to compute the routes of people. (match python-moss>=1.0.0)

  • moss-replay: A internal JS/TS package for building web-based UI to visualize the simulation results, URL. (match python-moss>=1.0.0)

  • moss-webui-frontend: A web UI to visualize the PostgreSQL output of the MOSS project, URL. The project is only a frontend built on moss-replay and provide a simple 2D visualization for debugging. Users can choose the backend URL in the web settings to connect to their backend and databases. (match python-moss>=1.0.0)

  • moss-webui-backend: A web backend to provide HTTP Restful API for the database output of the MOSS project, URL. The project provides Docker images to allow users to deploy the backend easily. (match python-moss>=1.0.0)

  • moss-ui: A simple UI to visualize the AVRO output of the MOSS project by adapting moss-replay to the AVRO output, URL. The project is a desktop application using web technologies, but it now faces performance challenges to manage data without a database. (match python-moss>=1.0.0, unstable)

  • MOSS based transportation optimization benchmark: A benchmark for large-scale transportation optimization benchmark based on MOSS, URL. The project includes simulation performance evaluation, traffic signal control optimization, dynamic lane control optimization, tidal lane control optimization, congestion pricing optimization, and road planning optimization. (match python-moss>=0.3.3,<1.0.0, will be updated)

  • sample programs: The sample programs for MOSS, URL. The project includes the showcases of MOSS for traffic signal control optimization. (match python-moss==0.2.0, deprecated)

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