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Topic Review
Energy-Saving Operational Strategies for Urban Rail Transit System
Designing low-carbon urban rail transit systems is a critical component of reducing emissions and addressing climate change at the urban scale. Energy-saving operational strategies have been investigated in two major ways: the utilization of the potential gravitational energy of a train and the flexibility of control conditions.
  • 744
  • 24 Nov 2023
Topic Review
Origin-Destination Estimation
The origin–destination matrix (OD matrix) reflects the expected movement intensity of road users, where each element is the number of trips between the two traffic analysis zones (TAZs). It can represent the traffic demand over different time scales, from hours to years, corresponding to the dynamic and static OD inference problem, respectively. In the short term, it can be applied both as the initial input to the simulator and to boost the precision of short-term traffic flow forecasts. In the long term, the OD matrix provides the details on the average daily mobility needs of city’s inhabitants and can help assess the urban layout’s rationality and plan future infrastructure development.
  • 729
  • 23 Oct 2023
Topic Review
Two-Stage Fuzzy Traffic Congestion Detector
This research presents a two-stage fuzzy-logic application based on the Mamdani inference method to classify the observed road traffic conditions. It was tested using real data extracted from the Padua–Venice motorway in Italy, which contains a dense monitoring network that provides continuous measurements of flow, occupancy, and speed. The data collected indicate that the traffic flow characteristics of the road network are highly perturbed in oversaturated conditions, suggesting that a fuzzy approach might be more convenient than a deterministic one.
  • 725
  • 17 Jul 2023
Topic Review
Highway Safety Manual for Brazilian Multilane Highways
This research assesses the performance of Highway Safety Manual (HSM) predictive models when applied to Brazilian highways. The research evaluates five rural multilane highways and calculates calibration factors (Cx) of 2.62 for all types of crashes and 2.35 for Fatal or Injury (FI) crashes. The Goodness of Fit measures show that models for all types of crashes perform better than FI crashes.
  • 722
  • 20 Jul 2023
Topic Review
Smart Cities and Public Transport Vehicles
A “smart city” contains not only new tools but also vehicles or infrastructure. A new type of vehicle could use both the existing tram routes and newly constructed sections with no tracks. It is assumed that new vehicles would drive with trams on the same, shared tracks.
  • 720
  • 26 Oct 2023
Topic Review
Prediction of Bike Sharing Demand and Design
As a consequence of the persistent trend towards urbanization, cities suffer from negative externalities (traffic congestion, air pollution, noise, etc.) caused by the increase in urban mobility. Since motorized individual transport comprises a sizable proportion of those negative effects, policymakers consider the promotion of active mobility (i.e., walking and cycling) as a way to address the key challenges of growing urban transport. In this regard, bike sharing systems have gained popularity, as they provide a sustainable and affordable alternative to motorized vehicles. Therefore, these systems are increasingly implemented in cities around the world.
  • 713
  • 15 Jan 2024
Topic Review
Quantifying the Complexity of the Autonomous Vehicles Environment
One of the challenges that autonomous vehicles (AVs) face is the large amount of data inundating the onboard computer from its sensors, which is beyond the real-time processing capabilities of current AV models. The onboard computer equipped by the AVs, which is required to operate in real- time, has the onus of perceiving the environment surrounding the AV, processing the incoming information, and making the most apt decisions to ensure the safe operations of the ego vehicle. 
  • 712
  • 18 Jan 2024
Topic Review
Energy-Efficient Driving
The transportation sector remains a major contributor to greenhouse gas emissions. The understanding of energy-efficient driving behaviors and utilization of energy-efficient driving strategies are essential to reduce vehicles’ fuel consumption. However, there is no comprehensive investigation into energy-efficient driving behaviors and strategies. Furthermore, many state-of-the-art AI models have been applied for the analysis of eco-friendly driving styles, but no overview is available.
  • 703
  • 19 Mar 2024
Topic Review
Static Configuration in Urban Rail Transit
With the rapid development of urban rail transit, the traditional urban rail wireless network based on fixed infrastructure is not in a position to meet the increasingly complex communication demand. At the same time, Ad Hoc network, as a special wireless mobile network, is developing rapidly. Applying this self-organized networking architecture to the urban rail vehicle–ground communication network can overcome the problems existing in the traditional urban rail communication system. The routing protocols that can achieve low delay and highly reliable data transmission are important in the urban rail transit scenario.
  • 690
  • 07 Sep 2023
Topic Review
Helmet Effectiveness and Collaborative Networks Analysis
As an emerging transport tool, electric bicycles (e-bikes) have been widely used due to their low cost and convenient travel characteristics. Numerous studies have shown that the failure to properly use seat belts and safety helmets is one of the major causes of road traffic accidents.
  • 689
  • 01 Apr 2022
Topic Review
Freight Distribution in Small Islands
Freight transportation in urban areas represents an essential activity from the standpoint of economic development; the spread of e-commerce (also accelerated by COVID-19) has contributed to increasing the demand for freight distribution over short distances. In most cities, the approaches and measures are often based on new technologies. This research tackles this topic, formulating and solving a distribution problem by linking shipping services with last-mile distribution operated by means of automatic delivery service (parcel lockers). The results show that such a type of service could reduce the user’s waiting time when compared to traditional home deliveries.
  • 689
  • 26 May 2023
Topic Review
BSafe-360
The popularity of bicycles as a mode of transportation has been steadily increasing. However, concerns about cyclist safety persist due to a need for comprehensive data. This data scarcity hinders accurate assessment of bicycle safety and identification of factors that contribute to the occurrence and severity of bicycle collisions in urban environments. The BSafe-360, a novel multi-sensor device designed as a data acquisition system (DAS) for collecting naturalistic cycling data, which provides a high granularity of cyclist behavior and interactions with other road users.
  • 686
  • 07 Aug 2023
Topic Review
Unveiling the Hidden Effects of Automated Vehicles
The deployment of automated vehicles (AVs) has the potential to disrupt and fundamentally transform urban transportation. As their implementation becomes imminent on cities’ streets, it is of great concern that no comprehensive strategies have been formulated to effectively manage and mitigate their potential negative impacts, particularly with respect to the components of the do no significant harm (DNSH) framework recently introduced in the EU taxonomy. 
  • 682
  • 31 Jul 2023
Topic Review
Maritime Transportation Safety Management
Maritime transportation plays a critical role in global trade, and studies on maritime transportation safety management are of great significance to the sustainable development of the maritime industry. Consequently, there has been an increasing trend recently in studies on maritime transportation safety management, especially in terms of safety risk analysis and emergency management.
  • 680
  • 04 Mar 2024
Topic Review
Vehicle Routing Problem
With the expansion of online shopping, urban logistics must handle the increasing customer demand, making the last-mile delivery process more challenging. Furthermore, this expansion significantly contributes to companies’ distribution costs. To overcome some of the last-mile delivery costs, parcel lockers-as a delivery option-can be an alternative solution. Parcel lockers extend delivery options beyond home delivery, offering cost-saving benefits. However, incorporating multiple delivery options introduces additional complexity to the delivery management system.
  • 663
  • 18 Oct 2023
Topic Review
Health Benefits of Promote Walking in Urban Areas
The transportation sector contributes significantly to global warming, as well as to urban fabric problems such as traffic congestion, traffic accidents, noise pollution, and air pollution. A shift from fossil fuels to renewable sources and from motorized to non-motorized modes is now considered essential to create sustainable communities. Walking is a sustainable transport mode and several studies have focused on factors affecting it, including travel behavior and sociodemographics.
  • 658
  • 19 Dec 2023
Topic Review
Enhancing Walking Accessibility in Urban Transportation
The rise in “urban diseases” like population density, traffic congestion, and environmental pollution has renewed attention to urban livability. Walkability, a critical measure of pedestrian friendliness, has gained prominence in urban and transportation planning.
  • 634
  • 15 Nov 2023
Topic Review
Emissions, Decarbonization, and Alternative Fuels in Inland Navigation
In response to the pressing need for transportation decarbonization, the often overlooked domain of inland waterway transport and seeks to answer which alternative fuel or power source is the most promising for that sector. As the shipping industry significantly contributes to global carbon emissions, it has been shifting towards alternative fuels and decarbonization measures in the effort to reduce them, whereas the inland waterways, operating predominantly on diesel engines, have not achieved equivalent substantial progress. Liquified natural gas (LNG) initially emerged as a favored alternative fuel, but recent studies emphasize a shift towards “greener” solutions like batteries and hydrogen. Europe and Asia lead in these developments. This investigation uncovers critical gaps in research and development, particularly in the Northern European countries that have extensive inland waterway networks. It also calls for future studies to explore the performance of vessels that have adopted LNG compared to other emerging alternatives and emphasizes the importance of considering the time lag between technology development and research publication.
  • 633
  • 20 Nov 2023
Topic Review
Evolution of Macro-Modeling Practices
International transport corridors (ITCs) are intricate logistical networks essential for global trade flows. The effective modeling of these corridors provides invaluable insights into optimizing the transport system. The relevance of macro-modeling in today’s international transport landscape is underscored by the growing complexity of global supply chains. With the rise of e-commerce and just-in-time delivery models, the demand for strategic planning and optimization of ITCs has soared. Countries and corporations alike recognize the need for a holistic understanding of transport networks to maintain competitiveness and ensure economic growth. Macro-modeling answers this call by enabling the simulation and analysis of large-scale transport systems, providing stakeholders with a complex view of the operational intricacies and potential improvements.
  • 628
  • 26 Feb 2024
Topic Review
Drone Scheduling for Emergency Power Material Transportation
Stable material transportation is crucial for quickly restoring power systems after disasters. Drone-based material transportation can bypass the limitations of ground transportation and reduce transportation time. However, the current UAV flight trajectory distribution optimization model cannot meet the needs of emergency relief material distribution in mountainous areas after disasters. Having a sound emergency distribution plan can significantly speed up the recovery of your distribution system.
  • 627
  • 27 Sep 2023
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