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Workshop: Digital Roads of the future - University of CambridgeThis workshop will showcase research from the Future Roads programme, highlighting practical innovations across five key themes: Digital Twins, Sustainability, Smart Materials, Automation & Robotics, and Data Science. Participants will gain insights into:
FUTUREROADS Programme WorkshopA graph-centric framework for digital twinning the built environmentDr. Junxiang ZhuThis presentation is about graph generation, graph query, and graph-based knowledge discovery for digital twinning, based on graph-based representation of asset data. PaveMove: A novel theoretical model for TSD tests of asphalt pavementsDr. Zhaojie SunThis presentation introduces a self-developed theoretical model for Traffic Speed Deflectometer (TSD) tests of asphalt pavements. The detailed features, functions, and performance of PaveMove will be covered. The PaveMove can be used as a solver in the interpretation process of TSD measurements, which can produce structural health information for a digital twin of roads. An LLM-driven Multi-Agent Framework for Enhancing Human-Digital Twin Interaction in Built Infrastructure ManagementDr Linjun LuDigital twins (DTs) are becoming a transformative technology for built infrastructure management. However, their potential remains constrained by the limitations of existing human-DT interaction modes, namely graphical user interfaces (GUIs), which impose steep learning curves, rigid workflows, and high cognitive loads. This study introduces a large language model (LLM)-driven multi-agent system (MAS) framework as an alternative human-DT interaction paradigm. Within this framework, a Leader Agent, supported by a Reasoning Agent, coordinates specialized Member Agents to decompose tasks, orchestrate workflow, and orchestrate heterogeneous DT functions. A proof-of-concept prototype, termed HighwayMAS, was developed for highway infrastructure management and evaluated through a mixed-design experiment involving 18 highway experts. Results showed that HighwayMAS significantly outperformed the traditional GUI in reducing cognitive workload, improving task performance, and improving usability and user experience. Importantly, participants without prior DT experience completed tasks successfully, signifying MAS as a promising direction for more intuitive, adaptive, and human-centered DT interaction. Efficient Reservoir Computing-based Control for Stabilising Mixed-Autonomy TrafficDr Kai-Fung ChuTraffic shock waves and the resulting congestion pose significant challenges to travel time and fuel efficiency. Autonomous vehicles (AVs) have emerged as a potential solution to alleviate these issues by intelligently controlling their speed. However, existing reinforcement learning (RL) methods for AV control are often inefficient, requiring extensive training time and data. This paper presents a novel reservoir computing (RC)-based control approach for longitudinal control of an AV operating within a vehicle fleet. The goal is to mitigate traffic shock waves by controlling an AV in mixed-autonomy traffic, achieving comparable performance to state-of-the-art RL methods in an efficient and adaptive way. Unlike RL methods that require substantial training of large data from various traffic conditions, our proposed approach utilize the intrinsic memory and dynamics of the traffic, supporting it to demonstrate superior data and training efficiency, and adaptability to varying traffic conditions. Simulation results on different road structures and configurations validate the method's effectiveness, showing comparable performance in mean speed, speed stability, traffic flow, and fuel efficiency. This demonstrates the advantages of RC-based control in terms of rapid training and data efficiency, making it a promising approach for efficient AV control in mixed-autonomy traffic. It also contributes to the understanding of leveraging system dynamics and physical intelligence rather than relying solely on computational solutions, leading to a significant social impact in real-world traffic and other applications where extensive data collection is impractical. Climate change exacerbates critical service accessibility during flooding and its inequalityDr. Zizhen XuClimate change is expected to intensify flood risk across England. Flood induced interruption to transport routes potentially threatens access to critical healthcare and fire-rescue services. This study provides a national-scale, spatial assessment of future flood impact on neighbourhood-level accessibility to the critical services in England. The study reveals that climate change would worsen service accessibility and further exacerbates the inequality across neighbourhoods. These exacerbations drive the emergence of new hotspots where severe accessibility disruption become more possible as well as the shifts of dominant flood source at the neighbourhoods level. Analyses also reveal the geographical patterns of climate-change induced accessibility loss and inequality. The results suggest it is crucial to adopt a local place-based, context-sensitive approach to the planning of flood resilience and climate adaptation, and improving the geographical equality of service accessibility. Road surface monitoring based on physical computing methodsDr. Xiang WangCivilian vehicles installed with sensors have been used for road surface condition monitoring. The collected data are generally analysed with algorithms. Vehicles are dynamic systems which interact with the road via the tyres, so the collected dynamics features include short-term information of the system. Based on it, if another physical dynamic system is used to analyse the collected signals, the signals can be processed according to the dynamic characteristics of the physical system to obtain information such as road surface conditions. Previous studies have shown that using the inherent dynamics of an optoelectronic system can realise road surface condition analyses based on IMU data from a vehicle. Data Storytelling of Road DeteriorationDr. Ze WangThis talk will present a two-part exploration in understanding pavement deterioration. The first part started with data-driven predictions of road deterioration. Specifically, this part identifies four categories of strategies to preprocess data for training machine-learning-based forecasting models. The Long-Term Pavement Performance (LTPP) dataset is employed to benchmark these categories. The comparative study examines the impact of data preprocessing strategies, the volume of historical data, and forecast horizon on the accuracy and reliability of performance forecasts based on multiple pavement performance indicators. The quantitative guidelines generated through this part ultimately support more effective and reliable application of data-driven techniques in infrastructure performance forecasting. The second part focused on non-destructive pavement structural capacity evaluation. Specifically, the Traffic Speed Deflectometer (TSD) technology is the centerpiece. This part presents a methodological framework for probabilistic parameter inference using TSD measurements. The innovation lies in the synergistic combination of a physics-based simulator, PaveMove, machine learning surrogates to accelerate PaveMove calculations, and Bayesian updating to transform traditional deterministic parameter inference into a probabilistic framework that explicitly incorporates multiple material and measurement uncertainties. The results indicate that the proposed framework effectively addresses the limitations inherent in traditional techniques and provides more accurate, consistent, and reliable results of parameter inference. The proposed framework paves the way for the broader adoption of TSD technology in practice, ultimately permitting real-time, uncertainty-aware pavement management at the network scale. Enabling Infrastructure Subsystems Integration via Agentic Ontology EngineeringDr. Yin MengtianSemantic harmonisation of heterogeneous infrastructure information systems is foundational to integrating data and systems for infrastructure asset management (IAM). However, manual knowledge engineering over complex organisational databases is labour-intensive. This paper presents an agentic ontology engineering method that uses large language models (LLMs) within a multi-agent framework to automatically extract knowledge and model ontologies from heterogeneous IAM databases. The system progressively generates classes, hierarchies, relations and logical restrictions, while agents align cross-system concepts and detect contradictions to ensure consistency. Evaluated on four real-world IAM schema sets, the method achieves 92.1% entity recall against a ground truth ontology, 90.91% entity classification accuracy, and 83.18% relation classification accuracy. Compared with a single-LLM baseline, the multi-agent approach yields higher quality ontologies with fewer constraint violations. The resulting IAM ontology supports interoperability across diverse subsystems, demonstrating that agentic, LLM-driven modelling can significantly reduce effort while improving fidelity for infrastructure information management. Resilience of the Road Network in Greater London and Surrounding Regions: Integrating Multiple Impacts Beyond FloodingDr Liu JieExtreme rainfall disrupts road networks via flooding, reduced visibility, and traffic-signal failures, yet most studies consider these factors in isolation and miss rainfall-triggered delay propagation. We integrate all three into a dynamic traffic assignment framework to capture network-wide spillovers. Network performance is measured by average delay per time slice; resilience is the ratio of cumulative delays under normal vs. extreme-rainfall conditions. In Greater London and surroundings, spillover delays account for 0.42, 0.34, and 0.27 of total delay increases under 1-in-30, 1-in-100, and 1-in-1000-year scenarios, respectively. Mean resilience values are 0.79, 0.66, and 0.59, implying delays rise by 1.51× and 1.69× under the 1-in-100 and 1-in-1000 events relative to normal conditions. Towards Circular Pavements: Advancing Low-Carbon Cementitious Materials and Recycled Asphalt for a Net-Zero FutureDr Abbas Solouki
This talk explores innovative approaches to achieving circularity and carbon reduction in pavement engineering. It presents recent advances in the development and implementation of low-carbon cementitious materials such as geopolymers and limestone calcined clay cement (LC3) combined with recycled asphalt pavements (RAP) to design sustainable and high-performance road structures. The presentation will highlight laboratory results, material design strategies, and pathways for field application, emphasizing how these solutions contribute to the transition toward net-zero infrastructure Acknowledgements This programme is funded by the EU Horizon 2020 under grant agreement No. 101034337.
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