Background: Defining the optimal fleet portfolio is a crucial process in airline planning. The published efforts in literature provide ways to anticipate the disruption effects on the passenger demand; however, the proposed solution in this paper provides visibility on the impact of sustainable...

Open-pit mining operations depend heavily on the availability and reliability of complex equipment fleets, where the failure of one component can disrupt overall productivity. This study proposes two complementary optimization models to enhance fleet allocation and reliability in the mining...

The deployment of alternatively fueled (AF) vehicles constitutes an important measure in meeting the European Union's (EU's) climate goals. The study aims to characterize and evaluate, in a comparative manner, the current stage of the adoption of AF passenger cars into the general (M1) passenger...

The last mile delivery is particularly challenging for stochastic deliveries with narrow time windows. This topic is timely due to the rise of e-commerce and courier type services and the impacts of fleet size and vehicle type on delivery costs. A novel contribution of this research is to...

In this work, we extend the time-dependent vehicle routing problem with time windows on a road network by considering two types of vehicles, large and small, to serve customers. Motivated from city logistics applications, large vehicles are forbidden from the downtown area. Accordingly, goods...

Using a stacked differences-in-differences approach, we study the effects of Low Emission Zones (LEZs) in Germany. The implementation of stage 1 and 2 LEZs, which banned the most pollution-intensive vehicles from city centers, significantly reduced PM10 concentrations. The most restrictive third...

Car-sharing services i.e. short-term car rentals, are ideologically driven systems aimed at modernizing contemporary transportation towards sustainable development and encouraging society to abandon individual motorization. Despite their noble goals, car-sharing systems face numerous operational...

Background: This study addresses optimising fleet size in a system with a heterogeneous truck fleet, aiming to minimise transportation costs in interfacility material transfer operations. Methods: The material transfer process is modelled using a closed queueing network (CQN) that considers...

Serbia is transitioning to an environmentally sustainable, low-carbon, climate-resilient economy, but the transition must be accelerated in view of climate change and increasing air pollution. Serbia has Europe's worst per capita record for pollution-related deaths, and the environmental...

Problem definition: The configuration of an emergency vehicle fleet (EVF) is critical to ensure that responders have the resources necessary to serve emergencies quickly and help prevent loss of life and property damage. Determining the fleet’s optimal design involves decisions regarding the...

The rise of autonomous driving may sharply reshape ride-sourcing markets by influencing drivers’ income and participation, customers’ choices, ride-sourcing platforms’ operations, and governments’ regulations. We introduce a model which characterizes a ride-sourcing market with a mixed...

We analyze an optimal electric vehicle (EV) fleet and charging infrastructure capacity planning problem in a spatial setting. As customer requests arrive at rate λ, the system operator must determine the minimum number of vehicles and chargers for a given service level along with a matching and...

Background: Road transport companies utilize transport capacities as fixed compositions of tractors and semi-trailers, while the possibility of exchanging semi-trailers is considered ad hoc, after some unforeseen circumstances emerge on the route. Such an approach is a limiting factor in...

Financial modelling of road transport operations involves structural algorithms for developing intermediate and final outputs of financial models and estimating some key inputs. While some key inputs to a transport financial model, e.g. the periodic transportation plan, current or forecast cost...

Das starke Wachstum des E‑Commerce stellt bedeutende Herausforderungen an die Betreiber von Fahrzeugflotten, um den kostenintensiven Fahrzeugeinsatz in einem digital getriebenen Transportmarkt zu optimieren. Innovative Fahrzeug- und Datentechnologien bieten dabei neue Möglichkeiten für die...

In maritime industry, moving assets (e.g., naval ships, dredgers, pilot vessels) are subject to obligatory inspections that are based on calendar time. These inspections consist of exhaustive operations that need the assets to be towed into specialized facilities referred to as dry-docks. In...

Comprehensive global decarbonization requires transportation services cease to rely on fossil fuels for power generation. This paper develops a generic, time-driven life-cycle cost model for mobility services to address two closely related questions central to the emergence of clean energy...

We show how uncertainty shapes the asset allocation, composition, productivity, and value of capital-intensive firms. We do so using detailed, near-universal data on shipping firms' new orders, secondary-market transactions, and demolition of ships. Firms curtail both the acquisition and...

We discover that in each shipping segment the price of scrap, earnings, and the fleet size are jointly determined. Deploying a Vector Error Correction model, we find that international steel-scrap prices explain ship scrap prices, but the price of nickel, crude oil, and seaborne trade have an...

Low-carbon economy roadmaps aim to reduce transport emissions by relying, at least to some extent, on electric vehicles. The uptake of electric vehicles on a mass scale requires the simultaneous adoption of such vehicles for private and commercial purposes. Although literature regarding the...

We consider the fleet repositioning problem for a free-floating vehicle sharing system. The objective is to decide on the vehicle distribution dynamically in the network in order to maximize the long-run average social welfare, i.e., to match the vehicle supply and travel demand at the least...

We show how uncertainty shapes the asset allocation, composition, productivity, and value of capital-intensive firms. We do so using detailed, near-universal data on shipping firms' new orders, secondary-market transactions, and demolition of ships. Firms curtail both the acquisition and...

Mobility is essential for economic and social development, but the transport sector in most countries is not sustainable in its existing form. Reducing Greenhouse Gas (GHG) emissions and local pollutants in the transport sector will create a cleaner, healthier and more livable future for...