Building Virtual Driving Environments From Computer-Made Projects

2019 ◽  
pp. 306-320
Author(s):  
Carlos José Campos ◽  
Hugo Filipe Pinto ◽  
João Miguel Leitão ◽  
João Paulo Pereira ◽  
António Fernando Coelho ◽  
...  
Keyword(s):  
Experimental Studies ◽  
3D Models ◽  
Level Of Detail ◽  
Driving Simulation ◽  
Driving Simulators ◽  
The Road ◽  
Terrain Models ◽  
Procedural Method ◽  
Modeling Task ◽  
State Of Art

The virtual environments used in scientific driving simulation experiments require extensive 3D models of road landscapes, correctly modeled and similar to those found in the real world. The modeling task of these environments, addressing the terrain definition and the specific characteristics required by the target applications, may result in a complex and time-consuming process. This chapter presents a procedural method to model large terrain definitions and adjust the roadside landscape to produce well-constructed road environments. The proposed procedural method allows merging an externally modeled road into a terrain definition, providing an integrated generation of driving environments. The road and terrain models are optimized to interactive visualization in real time, by applying most state-of-art techniques like the level of detail selection and spatial hierarchization. The proposed method allows modeling large road environments, with the realism and quality required to perform experimental studies in driving simulators.

Procedural Generation of Road Paths for Driving Simulation

2015 ◽  
Vol 6 (2) ◽  
pp. 37-55 ◽  
Author(s):  
Carlos Campos ◽  
João Miguel Leitão ◽  
António Fernando Coelho
Keyword(s):  
Traffic Engineering ◽  
Three Dimensional ◽  
Scientific Work ◽  
Driving Simulation ◽  
Driving Simulators ◽  
Design Standards ◽  
Road Engineering ◽  
The Road ◽  
Procedural Generation ◽  
Three Dimensional Models

Virtual environments for driving simulation aimed to scientific purposes require realistic three-dimensional models of roads. The creation of road models for these purposes, is usually preceded by the design of road paths which fulfill all the desired specific characteristics. Traditionally, the design of road paths is performed by road engineering specialists, resulting in a very time-consuming task. This paper presents a method that allows the procedural generation of road paths aimed to driving simulation experiments (e.g., ergonomics, psychology and traffic engineering). This method is inspired in methods used in roadways engineering, producing roads according to the design standards and similar to those found in the real world. This significantly reduces the need of specialists to prepare the road paths and generate road models suitable for conducting scientific work in driving simulators.

Mobile Phone and Driving

2015 ◽  
pp. 1341-1355
Author(s):  
Andrea Benedetto ◽  
Alessandro Calvi ◽  
Fabrizio D'Amico
Keyword(s):  
Mobile Phone ◽  
Experimental Studies ◽  
Research Direction ◽  
Driving Simulation ◽  
Future Research ◽  
Future Research Direction ◽  
Driving Simulators ◽  
Cell Phone Use ◽  
Naturalistic Driving ◽  
Simulator Study

Although most countries have made cell phone use while driving illegal, the drivers still use it both for calling and texting, increasing worries related to sanitary aspects, among these the effects on driving performance and road safety. There are many studies that have investigated the distraction factors related to phone use while driving. Specifically, experimental studies using driving simulators, closed-track driving courses, and naturalistic driving while using a mobile phone have reported a variety of driving impairments. This article firstly provides a review of the state-of-the-art and then, after a discussion of the great advantages of studying drivers' performance using driving simulation, a full simulator study on the effects of mobile phone while driving is presented. Finally, future research direction is addressed.

scholarly journals The Evaluation of Experimental Variables for Sustainable Virtual Road Safety Audits

2021 ◽  
Vol 13 (11) ◽  
pp. 5899
Author(s):  
Yeonsoo Jun ◽  
Juneyoung Park ◽  
Chunho Yeom
Keyword(s):  
Road Safety ◽  
Traffic Light ◽  
Scenario Development ◽  
Driving Simulators ◽  
Traffic Condition ◽  
The Road ◽  
Road Pavement ◽  
Net Promoter ◽  
Road Safety Audits ◽  
Road Marking

This paper evaluates experimental variables for virtual road safety audits (VRSAs) through practical experiments to promote sustainable road safety. VRSAs perform road safety audits using driving simulators (DSs), and all objects in the road environment cannot be experimental variables because of realistic constraints. Therefore, the study evaluates the likelihood of recommendation of VRSA experimental variables by comparing DSs experiments and field reviews to secure sustainable road safety conditions. The net promoter score results evaluated “Tunnel”, “Bridge”, “Underpass”, “Footbridge”, “Traffic island”, “Sign”, “Lane”, “Road marking”, “Traffic light”, “Median barrier”, “Road furniture”, and “Traffic condition” as recommended variables. On the contrary, the “Road pavement”, “Drainage”, “Lighting”, “Vehicle”, “Pedestrian”, “Bicycle”, “Accident”, and “Hazard event” variables were not recommended. The study can be used for decision making in VRSA scenario development as an initial effort to evaluate its experimental variables.

scholarly journals Development of Driving Simulation Scenarios Based on Building Information Modeling (BIM) for Road Safety Analysis

2021 ◽  
Vol 13 (4) ◽  
pp. 2039
Author(s):  
Juan F. Dols ◽  
Jaime Molina ◽  
F. Javier Camacho-Torregrosa ◽  
David Llopis-Castelló ◽  
Alfredo García
Keyword(s):  
Road Safety ◽  
Data Exchange ◽  
Building Information Modeling ◽  
Cost Savings ◽  
Safety Analysis ◽  
Information Modeling ◽  
Driving Simulators ◽  
The Road ◽  
Road Design ◽  
Building Information

The analysis of road safety is critical in road design. Complying to guidelines is not enough to ensure the highest safety levels, so many of them encourage designers to virtually recreate and test their roads, benefitting from the evolution of driving simulators in recent years. However, an accurate recreation of the road and its environment represents a real bottleneck in the process. A very important limitation lies in the diversity of input data, from different sources and requiring specific adaptations for every single simulator. This paper aims at showing a framework for recreating faster virtual scenarios by using an Industry Foundation Classes (IFC)-based file. This methodology was compared to two other conventional methods for developing driving scenarios. The main outcome of this study has demonstrated that with a data exchange file in IFC format, virtual scenarios can be faster designed to carry out safety audits with driving simulators. As a result, the editing, programming, and processing times were substantially reduced using the proposed IFC exchange file format through a BIM (Building Information Modeling) model. This methodology facilitates cost-savings, execution, and optimization resources in road safety analysis.

scholarly journals Simulation Study of the Process of Friction in the Working Elements of a Car Braking System at Different Degrees of Wear

2018 ◽  
Vol 12 (3) ◽  
pp. 221-226 ◽  
Author(s):  
Andrzej Borawski
Keyword(s):  
Simulation Study ◽  
Friction Pair ◽  
Experimental Studies ◽  
Real Life ◽  
Operating Conditions ◽  
Heating Process ◽  
Passenger Cars ◽  
The Road ◽  
Emergency Braking ◽  
Braking System

Abstract Among the many elements of a modern vehicle, the braking system is definitely among the most important ones. Health, and, frequently, life, may rest upon the design and reliability of brakes. The most common friction pair used in passenger cars today is a disc which rotates with the road wheel and a cooperating pair of brake pads. The composite material of the pad results in changing tribological properties as the pad wears, which was demonstrated in experimental studies. The change is also facilitated by the harsh operating conditions of brakes (high and rapid temperature changes, water, etc.). This paper looks into how changing tribology reflects on the heating process of disc and pads during braking. And so a simulation study was conducted, as this method makes it possible to measure temperature in any given point and at any time, which is either impossible or extremely difficult in real life conditions. Finite element method analyses were performed for emergency braking events at various initial speeds of the vehicle reflecting the current road speed limits.

scholarly journals A new approach to assess the influence of road roughness on driver speed behavior based on driving simulator tests

2016 ◽  
Vol 11 (2) ◽  
pp. 144-152 ◽  
Author(s):  
Mariano Pernetti ◽  
Mauro D’Apuzzo Mauro D’Apuzzo ◽  
Francesco Galante
Keyword(s):  
Driving Simulator ◽  
Experimental Studies ◽  
Vertical Vibration ◽  
The Other ◽  
Added Value ◽  
Published Data ◽  
Vehicle Speed ◽  
Safety Level ◽  
The Road ◽  
Road Roughness

Vehicle speed is one of main parameters describing driver behavior and it is of paramount importance as it affects the travel safety level. Speed is, in turn, affected by several factors among which in-vehicle vibration may play a significant role. Most of speed reducing traffic calming countermeasures adopted nowadays rely on vertical vibration level perceived by drivers that is based on the dynamic interaction between the vehicle and the road roughness. On the other hand, this latter has to be carefully monitored and controlled as it is a key parameter in pavement managements systems since it influences riding comfort, pavement damage and Vehicle Operating Costs. There is therefore the need to analyse the trade-off between safety requirements and maintenance issues related to road roughness level. In this connection, experimental studies aimed at evaluating the potential of using road roughness in mitigating drivers’ speed in a controlled environment may provide added value in dealing with this issue. In this paper a new research methodology making use of a dynamic driver simulator operating at the TEST Laboratory in Naples is presented in order to investigate the relationship between the driver speed behavior on one hand, and the road roughness level, road alignment and environment, vehicle characteristics on the other. Following an initial calibration phase, preliminary results seem fairly promising since they comply with the published data derived from scientific literature.

Application of Topographical Capture Techniques for Modelling Virtual Reality

2013 ◽  
pp. 970-990
Author(s):  
Mercedes Farjas Abadía ◽  
Manuel Sillero Quintana ◽  
Pedro Ángel Merino Calvo
Keyword(s):  
Physical Activity ◽  
Virtual Reality ◽  
Human Body ◽  
Research Group ◽  
3D Models ◽  
Body Segments ◽  
The Road ◽  
Representation Systems ◽  
Human Figure ◽  
Capture Techniques

Since the dawn of time man has attempted to represent the human figure with techniques ranging from simple drawings to techniques that manage to reflect the movement of body segments. In parallel, cartographic techniques have developed very advanced capture and 3D representation systems, but even though they have been applied in recent years to other sciences, they have not been applied yet to virtual reality. The appearance of the laser acquisition systems has enabled us to acquire data without discrimination on points and to get quick 3D models. This situation allows us to work directly on the concept of surface and to analyze it from the uniqueness of the detail, compared to traditional systems which capture points for, later, imaging surfaces from them. Under this prism, a research group was formed by graduates in Physical Activity and Sport and in Cartography, in order to bring together both sciences and to improve techniques of capture and representation of the human body. The road is not completely gone, but some results have been obtained and are presented in this work.

Real/Not Real

2017 ◽  
pp. 201-227 ◽  
Author(s):  
Paolo Clini ◽  
Ramona Quattrini ◽  
Emanuele Frontoni ◽  
Roberto Pierdicca ◽  
Romina Nespeca
Keyword(s):  
Cultural Heritage ◽  
Data Acquisition ◽  
3D Modeling ◽  
Ad Hoc ◽  
3D Models ◽  
Large Set ◽  
Modeling Tools ◽  
3D Reconstructions ◽  
Research Challenge ◽  
State Of Art

Recent advances in data acquisition techniques and modeling tools lead towards a large availability of digital 3D models. Cultural Heritage domain, and particularly Architecture and Archaeology Heritage (AAH) significantly benefits from the introduction of digital 3D modeling, which represents a means of communication and dissemination. An underlying research challenge is represented by the portability of complex artifact, making them suitable for a large set of devices (e.g. mobile devices). The aim of this chapter is to outline best practices for the correct visualization of the 3D reconstructions of architectural and cultural heritage, especially for Mobile Augmented Reality and Holographic applications. A complete methodology is presented, ranging from data acquisition, simplification and visualization, underlining the importance of fostering architectural values in a compelling way. Authors also provide state of art challenges, limitations and opportunities, arguing the dissertation through a set of ad-hoc applications developed for different case studies.

scholarly journals The appliance of prefabricated soil-cement slabs processed with a hydrophobizing material for the road construction

2018 ◽  
Vol 196 ◽  
pp. 04026
Author(s):  
Sergey Sannikov ◽  
Sergey Kuyukov ◽  
Alexey Zamyatin ◽  
Alexandr Zhigailov
Keyword(s):  
Crack Formation ◽  
Experimental Studies ◽  
Road Construction ◽  
Full Scale ◽  
Complex Method ◽  
The Road ◽  
Soil Cement ◽  
Cement Mixture ◽  
Scale Experiment

The paper presents a complex method for increasing water resistance and reducing crack formation by using a prefabricated foundation of soil-cement slabs with surface processing with a hydrophobizing material on basis of organosilicon compounds. Theoretical, laboratory and full-scale experimental studies were made. Theoretical studies are based on the substantiation of the geometric parameters of the slab in order to exclude the probability of its destruction under its own weight during building and installation works. The result of the first stage of laboratory studies is the determination of the optimum composition of soil-cement mixture in order to achieve a grade of strength M20. At the second stage, the effectiveness of the influence of hydrophobizing materials "Tiprom U" and "Penetron-Admix" on water absorption and compressive strength of soil-cement was determined. The final stage of the research was a full-scale experiment. In the factory environment, soil-cement slabs were manufactured in metal forms. Based on the results of the research, conclusions about the effectiveness of this complex method were made. The use of soil-cement slabs allows reducing crack formation, as well as to work all year round due to manufacturing and surface treatment of slabs in the factory conditions.

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