Transportation · Traffic Simulation · ITS

Jiang Shengjun

Undergraduate / Transportation Engineering

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Sim. Flow

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Research Directions

Research

Two Complementary Dimensions

Traffic Simulation & Flow Theory

Studying intersection and network performance with simulation platforms, calibrating micro/macro flow models against real-world scenarios.

SUMOVISSIM交通流模型信号优化

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Intelligent Transportation & Big Data

Mining massive trajectory data to reveal the spatio-temporal patterns of urban traffic, supporting state recognition and short-term forecasting.

轨迹挖掘FCD机器学习GIS

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Featured

Answering Traffic Questions with Code & Data

Arterial Signal Coordination & Simulation Validation

Bi-directional green-wave optimization on an urban arterial using SUMO + TraCI; average delay reduced by 18.6% in simulation.

交通仿真信号优化SUMO

Congestion Identification at Urban Intersections using FCD

Processed 12M ride-hailing GPS traces to extract speed-density features and identify congestion propagation patterns via unsupervised clustering.

大数据轨迹挖掘FCD

Reinforcement Learning for Isolated Intersection Signal Control

Trained a DQN signal controller in SUMO; delay reduced by 12% vs fixed timing under non-stationary demand.

交通仿真机器学习信号优化

Latest

Recent Notes & Milestones

Research Notes

SUMO Simulation: From Network to Signal Optimization

From OSM to netconvert, lane validation, demand generation and signal optimization—a complete SUMO workflow in practice.

How FCD Reveals Urban Congestion Patterns

From GPS to traffic state via map-matching, aggregation and state estimation. A counter-intuitive finding: midnight "low speed" is often just red-light waiting.

My Traffic Simulation Toolchain Guide

OSM + netconvert + SUMO + TraCI + Python + ECharts, and why VISSIM is not ideal for end-to-end automation.

Awards & Experience

National College Traffic Tech Competition · 2nd Prize

Project "SUMO-based arterial signal coordination and simulation validation" stood out among 300+ teams; led simulation modeling and TraCI control modules.

China Undergraduate Mathematical Contest in Modeling · Provincial 1st Prize

Problem on congestion propagation in urban networks; built a cell-transmission model and solved it in Python, lead author.

Internship at a Municipal Transport Planning & Design Institute

Contributed to an urban expressway capacity assessment; reproduced peak-hour flow in VISSIM and co-authored the improvement report.