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A Reinforcement Learning-based Adaptive Control Model for Future Street Planning: An Algorithm and A Case Study

With the emerging technologies in Intelligent Transportation System (ITS), the adaptive operation of road space is likely to be realised within decades. An intelligent street can learn and improve its decision-making on the right-of-way (ROW) for …

Location-routing Optimisation for Urban Logistics Using Mobile Parcel Locker Based on Hybrid Q-Learning Algorithm

Mobile parcel lockers (MPLs) have been recently introduced by urban logistics operators as a means to reduce traffic congestion and operational cost. Their capability to relocate their position during the day has the potential to improve customer …

Location-routing Optimisation for Urban Logistics Using Mobile Parcel Locker Based on Hybrid Q-Learning Algorithm

Mobile parcel lockers (MPLs) have been recently introduced by urban logistics operators as a means to reduce traffic congestion and operational cost. Their capability to relocate their position during the day has the potential to improve customer …

A Decentralised Multi-Agent Reinforcement Learning Approach for the Same-Day Delivery Problem

Same-Day Delivery services are becoming increasingly popular in recent years. These have been usually modelled by previous studies as a certain class of Dynamic Vehicle Routing Problem (DVRP) where goods must be delivered from a depot to a set of …

An integrated vertiport placement model considering vehicle sizing and queuing

The increasing levels of congestion and infrastructure costs in cities have created a need for more intelligent transport systems. Urban Air Mobility (UAM) offers a solution by introducing intra-urban aerial transport to overcome the existing …

Demand modelling and optimal vertiport placement for airport-purposed eVTOL services

Recent technological advances have only recently made Urban Air Mobility feasible as a realistic alternative to existing transport modes. Despite the growing interest, this disruptive service requires accurate strategic investments to ensure its …

Fast Collision Prediction for Autonomous Vehicles using a Stochastic Dynamics Model

Autonomous Vehicles (AVs) have the potential to save millions of lives by reducing traffic deaths and accidents. However, despite recent advances, AVs have not met safety standard expectations for a variety of reasons, key among them being the …

Intelligent Management of On-street Parking Provision for the Autonomous Vehicles Era

The increasing degree of connectivity between vehicles and infrastructure, and the impending deployment of autonomous vehicles (AV) in urban streets, presents unique opportunities and challenges regarding the on-street parking provision for AVs. …

A bilevel optimisation model for the selection of parking and charging facilities for EV-based ride-hailing services

Mobility as a Service (MaaS) and Park & Ride (P&R) initiatives are gaining ground around the world, as remedial measures against traffic congestion. Such schemes introduce major changes in the interaction amongst travellers, transport infrastructure …

A top-down integrated approach to define key vulnerability indices for disaster risk management at container terminals

This paper presents a novel methodological framework to the definition of vulnerability indices in disaster risk management at container terminals, based on a top-down approach. This proposal is aimed at answering the need for improved consistency in …

Analysis of the world container shipping network by spanning tree and gravity model

In previous work, the authors pioneered the use of spanning trees to study the optimal structure of public transport networks. Spanning trees have the minimum number of links (one less than the number of nodes) and connect all nodes without loops. …

Optimal Planning for the Logistic System of Modular Construction through Multi-Stage Stochastic Programming

The modular construction method has been adopted extensively by the construction sector for pursuing higher building quality and better project efficiency. However, the employment of this new construction method has not only altered the definition of …

Sequential Trajectory Optimisation Using Dynamic Airspace Sectorisation

Small Unmanned Aerial Vehicles (UAVs) are finding a rapidly increasing number of applications in delivery, passenger transport, surveillance of assets, traffic monitoring and other industries. Apart from regulatory hurdles, low payload and range, a …

Simulation and Evaluation of CAVs Behavior in an Isolated Signalized Intersection Equipped with Dynamic Wireless Power Transfer System

This paper proposes an idea of charging eco-driving connected autonomous vehicles (CAVs) which drive smoothly passing signalized intersection above a dynamic wireless power transfer (DWPT) system consisting of segmented coils at the upstream of …

A flow-based resilience assessment method for interdependent urban infrastructure networks

Catastrophic events in recent years have shown that interdependencies between different urban infrastructure systems can result in additional vulnerabilities, such as cascading failure, prolonged downtimes and network congestion. However, currently …

Analysing the effects of interdependency on the resilience of urban transport systems, A dynamic network flow approach

After natural disasters and other major disruptions, interdependencies between transport networks and other critical infrastructure systems can result in additional vulnerabilities, such as cascading failure, delayed recovery and network congestion. …

Dynamic Pricing in One-Sided Autonomous Ride-Sourcing Markets

Dynamic pricing has been used by Transportation Network Companies (TNCs) to achieve a balance between the volume of ride requests with numbers of available drivers on two-sided TNC markets. Given the desire to reduce operating costs and the emergence …

Integrated Trajectory-Location-Routing for Rapid Humanitarian Deliveries using Unmanned Aerial Vehicles

Unmanned Aerial Vehicles have the potential to provide an economical solution to the challenges of post-disaster land-based relief operations. Beyond regulatory concerns, technical and particularly airspace integration limitations inhibit their …

Market dynamics between public transport and competitive ride-sourcing providers

Recent advances in communications and IT technology have underpinned the rapid development of trans- portation network companies (TNCs) in recent years. Although the competitive prices offered by TNCs have been well-received by users, recent studies …

Probabilistic assessment of container shipping route disruption costs from natural disasters – An application to the KIX Australia-New Zealand Service Line

This paper presents the findings of a study developing a methodological framework for the quantification of natural disasters’ disruptive impacts on the global container shipping network and the assessment of potential rerouting options. The natural …

Ultra-Capacitor based kinetic energy recovery system for heavy goods vehicles

The Climate Change Act 2008 commits the UK to reduce the Greenhouse Gas emissions by 80% by 2050 relative to 1990 levels. While Heavy Goods Vehicles and buses contribute about 4% of the total Greenhouse Gas emissions in the UK, these emissions only …

A dynamic network flow model for interdependent infrastructure and supply chain networks with uncertain asset operability

A Fleet Sizing Algorithm for Autonomous Car Sharing

In the past ten years, the popularity of car sharing schemes has been growing rapidly. Depending on service policies, a customer might be required to return the vehicle to the same location or a different one. The latter type of service is termed as …

Establishing outsourcing and supply chain plans for prefabricated construction projects under uncertain productivity

In prefabricated construction projects, unlike stick-built construction projects, structural components are produced in a factory environment. Thus, similar to manufacturing industries, the productivity of building components fluctuates, owing to …

Integrated Trajectory Optimisation and Location‐Routing Method for Rapid Medical Deliveries using Unmanned Aerial Vehicles (UAVs)

Battery-powered Unmanned Aerial Vehicles are increasingly used to enhance humanitarian response. An ongoing initiative led by the World Food Programme is exploring their integration in response mechanisms, including last-mile relief distribution …

Investigating Schedule Deviation in Construction Projects through Root Cause Analysis

In construction projects delays are not only disruptive but also expensive. Thus, the reasons for schedule deviation need to be identified. In previous research delay factors were determined predominantly through surveys. In these studies, the …

Modelling the Dynamics of Asset Operability and Network Flows in Interdependent Infrastructure Systems after Disruptive Events

Catastrophic events in recent years have shown that complex interdependencies between critical infrastructure systems can result in additional vulnerabilities, such as cascading failure, prolonged downtimes and network congestion. This paper proposes …

Modelling the impact of infrastructure developments on the resilience of intermodal container transport networks: One-Belt-One-Road Case study

Infrastructure development initiatives such as terminal expansions and the addition of new corridors are common interventions aiming to increase the efficiency and efficiency of transportation systems. At the same time, it has been demonstrated that …

Rapid Urban Evacuation across Constrained Transport Networks

Evacuations are the quick removal of people from a dangerous area, and are necessary for disaster response. However, traffic congestions due to the surge in demand and inefficient planning often limits the effectiveness of an evacuation. In this …

Realisation of the optimal logistics plan for modular construction

The construction sector is undergoing a shift from in-situ building method to design for manufacturing and assembly (DfMA) systems. Long established in situ construction practices are replaced with processes imported from the manufacturing sector, …

Supply chain design for modular construction projects

The construction sector is currently undergoing a shift from stick-built construction techniques to modular building systems. If construction supply chains are to support this transformation, they need to be modified and strengthened using an adapted …

Analysing the resilience of metro systems under consideration of interdependencies

Metro systems are exposed to various risks arising from natural and man-made disasters. The effective protection of these complex transportation systems requires a detailed understanding of how they interact with other critical infrastructure …

Analysing World Events Using the GDELT dataset and Google BigQuery

The Global Database of Events, Language and Tone (GDELT) aims at capturing world events by monitoring the global news continuously, analysing the text and identifying the involved people, organisations, locations, themes, and, even the tone and …

Assessing Autonomous Vehicle Impact on Urban Traffic Emissions and Intersection Performance

This paper exploits the potential contribution of autonomous vehicles towards sustainable urban transport through their interaction with conventional traffic. Anticipating the gradual increase in autonomous vehicles use, the research examines how the …

Attacker-defender modelling of transport vulnerability in maritime logistics corridors

Access to the global container liner shipping network is of crucial importance for international trade and the sustainable development of countries. Changes to the structure of this network, such as increased reliance on hub-and-spoke configurations …

Equipment Sizing using Petri Networks

Ports have become freight distribution hubs. Due to fierce regional and international competition, port operators seek ways to maximise terminal throughput and productivity. This paper uses queuing theory, Petri Networks (PNs) and discrete event …

Joint Vulnerability Analysis of Urban Rail Transit and Utility Networks

As climate change is expected to increase the frequency of extreme weather events, cities around the world develop strategies to improve their disaster resilience. A key issue is the protection of critical urban infrastructure systems, such as …

Regional conflicts and impact of liner shipping

Understanding and predicting how container routing stands to be impacted by different scenarios of liner shipping network perturbations such as natural disasters or new major port developments is of key importance for decision-making in the liner …

Resilience of Liner Shipping Networks

Analysis of cascading failures across interdependent dynamic networks

Improving the resilience of urban infrastructure, such as transport, energy and telecommunication networks, is a key aspect of disaster risk management. These networks are interdependent in complex ways and the overall risk has to be assessed from a …

Modelling the Effects of Port Disruptions: Assessment of Disaster Impacts Using a Cost-Based Container Flow Assignment in Liner Shipping Networks

In recent years, the increasing levels of interdependence between ports and logistic networks have underlined the importance of an integrated approach toward the formulation of resilience strategies to address disruptive events along the supply …

Strategic maritime container transport design in oligopolistic markets

This paper considers the maritime container assignment problem in a market setting with two competing firms. Given a series of known, exogenous demands for service between pairs of ports, each company is free to design a liner service network serving …

Analysis of Prefabricated Urban Housing Constructions on Freight Transport Systems

Prefabricated buildings have become the choice of many construction teams as they offer time, cost, quality and environmental benefits compared to traditional on-site construction. We have explored the effects of prefabricated urban constructions on …

Effects of Speed Reduction Policies near Ports

Over the last decades, slow steaming strategies have been adopted by most shipping lines with the aim of reducing fuel costs. At the same time, these have resulted in significant environmental benefits from emissions reductions, which have …

Long-range collision avoidance for shared space simulation based on social forces

Shared space is an innovative approach to improve environments where both pedestrians and vehicles are present, with integrated layouts to balance priority. The Social Force Model (SFM) was used to visualise pedestrian and car trajectories so that …

A Systematic Evaluation of Alternative Options for the Reduction of Vessel Emissions in Ports

Transport operations are significant contributors to pollutant emissions across the globe. Maritime transport is responsible for approximately 3% of the global carbon emissions, while emissions around ports from vessel traffic and stationary ships …

Minimization of energy consumption within a container terminal

Container terminals require large amounts of energy due to the intensity of their operations. The limited area available for storing containers as well as the ever-increasing need for time efficiency has interesting implications in the energy demands …

Strategic network design in an oligopolistic market for maritime container transport

We consider an essential model in which two symmetric and profit-maximizing firms compete in a shipping industry characterized by a given map of ports, technology, and demand functions of container flows. The model is designed as a 4-stage …

Repositioning in Bicycle-Sharing Schemes

Difficulties in maintaining adequate numbers of bicycles and free docking spaces are a known issue in the operation of bicycle-sharing schemes. Empty and full stations in such systems are equally undesirable, since the former turn away potential …

Frequency-Based Maritime Container Assignment Model for Global Liner Services

This paper transposes the classic frequency-based transit assignment method of Spiess and Florian to containers demonstrating its promise as the basis for a global maritime container assignment model. In this model, containers are carried by shipping …

Repositioning algorithms for the global containership assignment network

The classic frequency-based transit assignment method of Spiess and Florian has been previously used as the basis for a maritime assignment model that employs liner service frequencies instead of fixed sailing times. This paper focuses on the …

Stochastic and deterministic assignment under uncertainty for automated container terminals

We consider the Automated Guided Vehicle (AGV) dispatching problem in container terminals where vehicles are allowed to carry more than one container at a time. This paper presents a micro-simulation framework that seeks to a real-life automated …

Towards a repositioning algorithms for bike sharing schemes

Several bike sharing schemes have been deployed around the world over the last decade, with one launching in London over the summer of 2010. A common operational problem with such schemes is the availability of adequate bikes (enough to satisfy …

Future for the Automation of Container Terminals

Modelling and solution approaches to the multi-load AGV dispatching problem in seaport container Terminals

We consider the automated guided vehicle (AGV) dispatching problem in container terminals where vehicles are allowed to carry more than one container at a time. The main focus of the study is on dual-load AGVs, which may carry either two 20-ft …

Stack Operation Uncertainty in Automated Container Terminals - Effects, Challenges and Control Techniques

The stochastic nature of container terminals is known to give rise to substantial challenges in the design of software algorithms for their control. In this study, we focus on the online optimisation of vertical container handling using automated …

A fresh look at container terminal simulation and its application in academic research

Container terminal simulation has long been recognised as a powerful tool by researchers and practitioners alike. As automation technologies have evolved past the early-adopter stage and are now considered by an increasing number of port operators, …

The Future of Automation

Originating from a freight transportation idea using trailers and attributed to Malcolm McLean, container shipment is probably the biggest development in the field of logistics since the invention of the locomotive two centuries ago. Over the last 50 …

Uncertainty in container terminal operations

An accurate visual microsimulation model has been developed and used to analyse the interaction of various equipment units commonly found in automated container terminals. We attempt to quantify the factors that contribute to operational uncertainty, …

Application of Robust Optimisation Techniques to Automated Container Terminals

Over recent years, there has been an increasing interest in automated operations of container terminals throughout Western Europe, starting with ECT in Rotterdam and culminating with Altenwerder in Hamburg. The format for automated container terminal …

Implementation of an Automated Guided Vehicle dispatching and scheduling framework using robust optimisation

Technologies used in automated container terminals, largely borrowed from other industrial domains, progressed rapidly after their initial implementations by European port operators, but still fail to cater for the unpredictability of such a dynamic …

Simulation and Evaluation of Intelligent Check in Facilities for Ferry Port Terminals

Ferry port terminals are an important element of a country’s transport infrastructure. Not only are they vital in providing marine connections, but they are also a critical economic asset which help create connectivity for both passengers and …

Security and Reliability of the Liner Container-Shipping Network

Since the events of 11 September 2001, more focus has been given to the role of seaports as critical nodes in the functioning and security of international shipping and logistics, with particular emphasis being placed on container ports and …