scholarly journals A brief review: traffic conflict techniques and the challenges of the studies in Indonesia

2019 ◽  
Vol 270 ◽  
pp. 03004
Author(s):  
Naomi Srie Kusumastutie ◽  
Pipit Rusmandani
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Video Analysis ◽  
Road Safety ◽  
Safety Assessment ◽  
Assessment Model ◽  
Analysis Tool ◽  
The Past ◽  
Traffic Conflict ◽  
Aerial Vehicle ◽  
Automated Video Analysis

For the past 50 years, Traffic Conflict Technique (TCT) has been growing rapidly as Surrogate Safety Measure (SSM). Unfortunately, the study of TCT as a road safety analysis tool in Indonesia is still limited. This article aims to describe the developments of TCT, regarding to the use of manual observation, automated video analysis and simulations with the Surrogate Safety Assessment Model (SSAM). This article also aims to identify the challenges of TCT implementation in improving road safety in Indonesia. Thus, it is expected to inspire researchers in Indonesia to develop TCT, for example by using Unmanned Aerial Vehicle (UAV) and microsimulation in TCT studies.

Trend Analysis of Unmanned Aerial Vehicles (UAVs) Research Published in the HFES Proceedings

2018 ◽  
Vol 62 (1) ◽  
pp. 1067-1071
Author(s):  
Salim A. Mouloua ◽  
James Ferraro ◽  
Mustapha Mouloua ◽  
P.A. Hancock
Keyword(s):  
Human Factors ◽  
Unmanned Aerial Vehicles ◽  
Unmanned Aerial Vehicle ◽  
Supervisory Control ◽  
Research Trends ◽  
Government Agencies ◽  
The Past ◽  
Human Factors And Ergonomics ◽  
Aerial Vehicles ◽  
Aerial Vehicle

The present study was designed to examine the research trends in the literature focusing on Human Factors issues relevant to Unmanned Aerial Vehicle (UAV) systems. As these UAV technologies continue to proliferate with increasing autonomy and supervisory control requirements, it is crucial to evaluate the current and emerging research trends across the generations. This paper reviews the research trends of 228 papers matching our search criteria. The search retained only relevant and complete papers published over the past thirty years (1988-2017) in the Proceedings of the Human Factors and Ergonomics Society. Results were tabulated, graphed, and discussed based on research categories, topic areas, authors’ affiliation, and sources of funding. Results showed a substantial increase in the number of articles in the last two decades, with most papers driven by academic institutions and military and government agencies.

scholarly journals Road safety assessment in preferential bus lanes through field analysis and microsimulation of traffic conflicts

2019 ◽  
pp. 87-100 ◽  
Author(s):  
Julián Darío Julián Otero-Niño ◽  
Juan David Heredia-Castiblanco ◽  
Paula Daniela Fonseca-Agudelo ◽  
Sebastián Cabrera-Pinzón ◽  
Alejandro Gómez-Mosquera ◽  
...  
Keyword(s):  
Public Transport ◽  
Road Safety ◽  
Safety Assessment ◽  
Stopping Time ◽  
Field Analysis ◽  
Road Users ◽  
Traffic Conflicts ◽  
Traffic Conflict ◽  
Field Information ◽  
The One

Preferential bus lanes are a widely use strategy to promote travelers to use public transport instead of private cars. Considering its relevance in the urban transportation planning and operation, it is crucial to evaluate them in terms of the operation and safety externality. We performed a road safety assessment in preferential public transport lanes with complex driving environment using a preventive approach on the 7 th Avenue, in Bogota (Colombia), between 39 th Street and 45 th Street. A detailed study of traffic conflicts was carried out under the guidelines of the Swedish technique, which uses the Time to accident and Conflicting speed to establish the severity of a conflict. A traffic conflict is defined as an incident where, if two road users on collision course maintain their speed and trajectory constant, the crash between them will be imminent. With the field information, we calibrated a VISSIM microsimulation model that correctly replicates its traffic operation. Using the SSAM tool, we validated the base model to identify the simulated traffic conflicts in VISSIM and compared them with the observed conflicts. Under the calibrated environment, we developed and assessed three different scenarios of countermeasures to reduce the number of conflicts observed. As a result, we found that the safest scenario is the one established in the regulations that normalize the operation in preferential lanes, currently not obeyed by most users. Based on our results, we recommend an adjustment in the normative measures, including regulating the stopping time and stopping zones of private vehicles and taxis.

Development on Fault Detection and Diagnosis of Unmanned Aerial Vehicles

2014 ◽  
Vol 494-495 ◽  
pp. 861-864
Author(s):  
Yi Peng Zhang ◽  
Ke Cai Cao
Keyword(s):  
Fault Detection ◽  
Unmanned Aerial Vehicles ◽  
Unmanned Aerial Vehicle ◽  
State Of The Art ◽  
Fault Detection And Diagnosis ◽  
The Past ◽  
Aerial Vehicles ◽  
Aerial Vehicle ◽  
Detection And Diagnosis

The reliability of unmanned aerial vehicles (UAVs) has caught the attention of many researchers in the past decades. This paper presents a review on the development and important issues of state-of-the-art researches in the field of fault detection and diagnosis (FDD) techniques. Faults on an individual unmanned aerial vehicle or a group of unmanned aerial vehicles are considered for providing an overall picture of fault detection and diagnosis approaches.

Safety Assessment of Unmanned Aerial Vehicle Operations in an Integrated Airspace

2016 ◽  
Author(s):  
Yazdi I. Jenie ◽  
Erik-Jan Van Kampen ◽  
Joost Ellerbroek ◽  
Jacco M. Hoekstra
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Safety Assessment ◽  
Aerial Vehicle

scholarly journals Simulation and experimental approach for optimal path planning of UAV using A* and MEA* algorithms

2021 ◽  
Vol 12 ◽  
pp. 24
Author(s):  
Balasubramanian Esakki ◽  
Gayatri Marreddy ◽  
M. Sai Ganesh ◽  
E. Elangovan
Keyword(s):  
Path Planning ◽  
Present Article ◽  
Unmanned Aerial Vehicle ◽  
Execution Time ◽  
Crucial Role ◽  
Experimental Approach ◽  
Optimal Path ◽  
Optimal Path Planning ◽  
The Past ◽  
Aerial Vehicle

Over the past decades, Unmanned Aerial Vehicle (UAV) have been effectively adapted to perform disaster missions, agricultural and various societal applications. The path planning plays a crucial role in bringing autonomy to the UAVs to attain the designated tasks by avoiding collision in the obstacles prone regions. Optimal path planning of UAV is considered to be a challenging issue in real time navigation during obstacle prone environments. The present article focused on implementing a well-known A* and variant of A* namely MEA* algorithm to determine an optimal path in the varied obstacle regions for the UAV applications which is novel. Simulation is performed to investigate the performance of each algorithm with respect to comparing their execution time, total distance travelled and number of turns made to reach the source to target. Further, experimental flight trails are made to examine the performance of these algorithms using a UAV. The desired position, velocity and yaw of UAV is obtained based on the waypoints of optimal path planned data and effective navigation is performed. The simulation and experimental results are compared for confirming the effectiveness of these algorithms.

Mini UAV Design and Manufacture with Bungee Launched / Parachute Recovery

2014 ◽  
Vol 610 ◽  
pp. 97-100 ◽  
Author(s):  
Lih Shyng Shyu ◽  
Yung Chia Hsiao
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Low Cost ◽  
High Mobility ◽  
The Past ◽  
Aerial Vehicle ◽  
And Function ◽  
Design And Manufacture

In the past ten years, the R&D of UAV (Unmanned Aerial Vehicle) is very popular and has the trend to replacing with the manned aerial vehicle due to its low-cost and high-mobility. According to the specifications, this project completes special contour and function of a mini-UAV design and passes the strict fabrication, prototyping, and aerial test processes. With the advantages of long flight endurance, speedy assembly/disassembly, simply contour, and portable, the developed mini-UAV has the capabilities of bungee launch and parachute recovery. Thus, it makes much progress in Taiwan’s mini-UAV area.

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