Results 11 to 20 of about 20,842 (266)

Traffic Demand Forecasting for Port Services

open access: yesPromet (Zagreb), 2011
Successful management of any sea port depends primarily on the harmonisation of transport supply and demand, whereas their incompatibility leads to a number of problems. The port, i.e.
Alen Jugović   +2 more
doaj   +3 more sources

Optimal capacity allocation for heavy-traffic fixed-cycle traffic-light queues and intersections [PDF]

open access: yes, 2023
Setting traffic light signals is a classical topic in traffic engineering, and important in heavy-traffic conditions when green times become scarce and longer queues are inevitably formed.
Boon, Marko   +9 more
core   +1 more source

Short-Term Segment-Level Crash Risk Prediction Using Advanced Data Modeling with Proactive and Reactive Crash Data

open access: yesApplied Sciences, 2022
Highway crashes, along with the property damage, personal injuries, and fatalities that they cause, continue to present one of the most significant and critical transportation problems.
Branislav Dimitrijevic   +3 more
doaj   +1 more source

Fine-grained urban flow inference based on diffusion models with incomplete data

open access: yes智能科学与技术学报, 2023
To obtain detailed traffic flow data for each road segment of the city, it is necessary to deploy a large number of sensing devices and dense observation stations, which increases the costs of daily operations and equipment maintenance.At the same time ...
Yuhao ZHENG, Senzhang WANG
doaj  

Recommendations for emerging air taxi network operations based on online review analysis of helicopter services

open access: yesHeliyon, 2020
The effects of traffic congestion are adverse, primarily including air pollution, commuter stress, an increase in vehicle operating costs, and accidents on road.
Suchithra Rajendran, Emily Pagel
doaj   +1 more source

TCFLTformer: TextCNN-Flat-Lattice Transformer for Entity Recognition of Air Traffic Management Cyber Threat Knowledge Graphs

open access: yesAerospace, 2023
With the development of the air traffic management system (ATM), the cyber threat for ATM is becoming more and more serious. The recognition of ATM cyber threat entities is an important task, which can help ATM security experts quickly and accurately ...
Chao Liu   +5 more
doaj   +1 more source

A quasi-dynamic air traffic assignment model for mitigating air traffic complexity and congestion for high-density UAM operations

open access: yes, 2023
In spite of the significant effects of COVID-19, UAM operations are still expected to grow smoothly and healthily in the near future. If such dense UAM traffic relies on tactical planning to resolve conflicts in a decentralized control scheme, urban ...
Delahaye, Daniel   +7 more
core   +1 more source

Evaluation of Shortest Paths in Road Network [PDF]

open access: yesPakistan Journal of Commerce and Social Sciences, 2009
Optimization is a key factor in almost all the topics of operations research / management science and economics.The road networks can be optimized within different constraints like time, distance, cost and traffic running onthe roads.This study is based ...
Farrukh Shehzad, Muhammad Akbar Ali Shah
doaj  

Link-Based System Optimum Dynamic Traffic Assignment Problems in General Networks [PDF]

open access: yes, 2019
Most current system optimum dynamic traffic assignment (SO-DTA) models do not contain first-in-first-out (FIFO) constraints and are limited to single-destination network applications.
Szeto, WY, Long, J
core   +1 more source

Towards Environmentally Sustainable Aviation: A Review on Operational Optimization

open access: yesFuture Transportation
In recent years, the rapid growth of air traffic has intensified pressure on the air transport system, leading to congestion problems in airports and airspace.
Laura Calvet
doaj   +1 more source

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