scholarly journals Visual Feedback Effectiveness in Reducing Over Speeding of Moped-Riders

2021 ◽  
Vol 12 ◽  
Author(s):  
Mariaelena Tagliabue ◽  
Riccardo Rossi ◽  
Massimiliano Gastaldi ◽  
Giulia De Cet ◽  
Francesca Freuli ◽  
...  
Keyword(s):  
Visual Feedback ◽  
Traffic Signals ◽  
Assistance System ◽  
Speed Limit ◽  
Baseline Session ◽  
Causal Factors ◽  
Road Crashes ◽  
Visibility Condition ◽  
Driving Task ◽  
Assistance Systems

The use of assistance systems aimed at reducing road fatalities is spreading, especially for car drivers, but less effort has been devoted to developing and testing similar systems for powered two-wheelers (PTWs). Considering that over speeding represents one of the main causal factors in road crashes and that riders are more vulnerable than drivers, in the present study we investigated the effectiveness of an assistance system which signaled speed limit violations during a simulated moped-driving task, in optimal and poor visibility conditions. Participants performed four conditions of simulated riding: one baseline condition without Feedback, one Fog condition in which visual feedback was provided so as to indicate to the participants when a speed limit (lower than that indicated by the traffic signals) was exceeded, and two post-Feedback conditions with and without Fog, respectively, in which no feedback was delivered. Results showed that participants make fewer speeding violations when the feedback is not provided, after 1 month, and regardless of the visibility condition. Finally, the feedback has been proven effective in reducing speed violations in participants with an aggressive riding style, as measured in the baseline session.

Digitalisierung von additiven Fertigungseinheiten/Digitalization of additive manufacturing units

2021 ◽  
Vol 111 (09) ◽  
pp. 633-637
Author(s):  
Maximilian Vogt ◽  
Julian Ulrich Weber ◽  
Vishnuu Jothi Prakash
Keyword(s):  
Additive Manufacturing ◽  
Feasible Solution ◽  
Spare Parts ◽  
Assistance System ◽  
Remote Locations ◽  
Assistance Systems ◽  
Mobile Manufacturing ◽  
Manufacturing Technologies

Additive Fertigungstechnologien erlauben die bedarfsgerechte Produktion von individuellen Ersatzteilen. Durch Einsatz mobiler Fertigungseinheiten lässt sich mithilfe dieser Verfahren die Resilienz von isolierten Produktionsstätten erhöhen. Um auch außerfachliches Personal zur Bedienung an entlegenen Einsatzorten zu befähigen, stellen digitale Assistenzsysteme eine mögliche Lösung dar. In diesem Beitrag wird ein solches Assistenzsystem zur Begleitung der manuellen Tätigkeiten beim roboterbasierten DED-Prozess in einer mobilen Fertigungseinheit diskutiert.   Additive manufacturing technologies enable the demand-driven production of individual spare parts. By using mobile manufacturing units, these processes can be used to increase the resilience of isolated production sites. In order to enable non-specialized personnel to operate at remote locations, digital assistance systems are a feasible solution. This paper discusses such an assistance system to accompany manual operations of the robot-based DED process in a mobile manufacturing unit.

Digitale Assistenzsysteme in der Produktion*/Innovative assistance systems in production

2017 ◽  
Vol 107 (03) ◽  
pp. 124-128
Author(s):  
L. Merkel ◽  
J, Starz ◽  
C. Schultz ◽  
S. Braunreuther ◽  
G. Prof. Reinhart
Keyword(s):  
New Technologies ◽  
Assistance System ◽  
Individual Worker ◽  
Best Fitting ◽  
Assistance Systems ◽  
Worker Support ◽  
Selection Of

Digitale Assistenzsysteme in der Produktion helfen, zunehmend komplex werdende Arbeitsaufgaben zu beherrschen. Dafür entstehen im Zuge der Digitalisierung der Produktion forschungsseitig zahlreiche neue Möglichkeiten individueller Werkerunterstützung. Das hier vorgestellte entwickelte Modell gestattet eine detaillierte Beschreibung der Fähigkeiten und Technologien von Komponenten eines Assistenzsystems. Durch einen Abgleich von spezifischen Anforderungen eines Anwendungsfalls mit den Fähigkeiten des Assistenzsystems soll die Auswahl eines geeigneten Assistenzsystems ermöglicht werden.   Digital assistance systems help to master tasks with growing complexity in production. Currently, a lot of research aims at developing new technologies for individual worker support. This paper presents a model for a detailed description of capabilities and technologies used for components in assistance systems. By matching a given task’s requirements with the capabilities of an assistance system, the selection of the best fitting assistance system can be achieved.

/Digitale Assistenzsysteme in der ProduktionDigital assistance systems in the production area – Specifying the relevant functions

2020 ◽  
Vol 110 (03) ◽  
pp. 103-107
Author(s):  
Christian Bayer ◽  
Rami Makhlouf ◽  
Joachim Metternich
Keyword(s):  
Assistance System ◽  
Production Area ◽  
Assistance Systems

Die Diversifikation von Produkten erhöht die Komplexität in der Produktion, wodurch die Anforderungen an die Beschäftigten steigen. Durch den Einsatz digitaler Assistenzsysteme kann die menschliche Arbeit in der Produktion unterstützt werden. Dieser Beitrag beschäftigt sich mit den relevanten Funktionen eines digitalen Assistenzsystems als Diskussionsgrundlage bei deren Einführung.   The diversification of products makes production more complex and jobs more demanding. Digital assistance systems can support human work in the production area. This article deals with the relevant functions of a digital assistance system as a basis for discussion when implementing them.

scholarly journals A deep learning-based worker assistance system for error prevention: Case study in a real-world manual assembly

2021 ◽  
Vol 16 (4) ◽  
pp. 393-404
Author(s):  
A. Riedel ◽  
J. Gerlach ◽  
M. Dietsch ◽  
S. Herbst ◽  
F. Engelmann ◽  
...  
Keyword(s):  
Deep Learning ◽  
Assistance System ◽  
Control Group ◽  
Production Environment ◽  
Manual Assembly ◽  
Human Errors ◽  
Error Prevention ◽  
Detection Model ◽  
Assistance Systems

Modern assembly systems adapt to the requirements of customised and short-lived products. As assembly tasks become increasingly complex and change rapidly, the cognitive load on employees increases. This leads to the use of assistance systems for manual assembly to detect and avoid human errors and thus ensure consistent product quality. Most of these systems promise to improve the production environment but have hardly been studied quantitatively so far. Recent advances in deep learning-based computer vision have also not yet been fully exploited. This study aims to provide architectural, and implementational details of a state-of-the-art assembly assistance system based on an object detection model. The proposed architecture is intended to be representative of modern assistance systems. The error prevention potential is determined in a case study in which test subjects manually assemble a complex explosion-proof tubular lamp. The results show 51 % fewer assembly errors compared to a control group without assistance. Three of the four considered types of error classes have been reduced by at least 42 %. In particular, errors by omission are most likely to be prevented by the system. The reduction in the error rate is observed over the entire period of 30 consecutive product assemblies, comparing assisted and unassisted assembly. Furthermore, the recorded assembly data are found to be valuable regarding traceability and production improvement processes.

On the Influence of Walking on Hazard Detection for Prospective User-Centered Design of an Assistance System for Older Pedestrians

i-com ◽  
2017 ◽  
Vol 16 (2) ◽  
pp. 87-98
Author(s):  
Janna Protzak ◽  
Rebecca Wiczorek
Keyword(s):  
Response Times ◽  
Assistance System ◽  
Unexpected Result ◽  
User Centered Design ◽  
Hazard Detection ◽  
Pedestrian Traffic ◽  
Assistance Systems ◽  
Motor Load ◽  
Prospective User ◽  
User Centered

AbstractAs older pedestrians are at high risk of being involved in car crashes, an assistance system is currently under development. One of it’s aims is to encourage them to stop walking before looking for traffic. The approach was evaluated in two studies. Age group -young vs. old- and motoric condition -walking vs. standing- served as independent variables in both experiments. Experiment one was conducted in a pedestrian traffic simulation with a traffic related visual hazard detection task with simulated walking. Analysis revealed no age-specific dual-task costs for accuracy and response time. This unexpected result was ascribed to the insufficient operationalization of the walking task, which lacked important aspects of real walking such as requirements of keeping the balance. Therefore, experiment two, comprised real walking but a simple visual task. In the second experiment older participants missed more targets than younger. More important, number of errors increased as a function of motor load only for older participants. Response times were enhanced for older participants and faster for both groups while standing compared to walking. Results are discussed with regard to the development of an assistance systems for older pedestrians and theoretical implications for prospective user-centered experimental design.

Can we build it: formal synthesis of control strategies for cooperative driver assistance systems

2013 ◽  
Vol 23 (4) ◽  
pp. 676-725 ◽  
Author(s):  
WERNER DAMM ◽  
HANS-JÖRG PETER ◽  
JAN RAKOW ◽  
BERND WESTPHAL
Keyword(s):  
Control Strategies ◽  
Divide And Conquer ◽  
Formal Specifications ◽  
Driver Assistance ◽  
Successful Completion ◽  
Driver Assistance Systems ◽  
Multiple Vehicles ◽  
Driving Task ◽  
Assistance Systems ◽  
Verification Methodology

We propose a design and verification methodology supporting the early phases of system design for cooperative driver assistance systems, focusing on the realisability of new automotive functions. Specifically, we focus on applications where drivers are supported in complex driving tasks by safe strategies involving the coordinated movements of multiple vehicles to complete the driving task successfully. We propose a divide and conquer approach for formally verifying timed probabilistic requirements on successful completion of the driving task and collision freedom based on formal specifications of a set of given manoeuvring and communication capabilities of the car. In particular, this allows an assessment of whether they are sufficient to implement strategies for successful completion of the driving task.

Vision System Based Lane Keeping Assistance Evaluated in a Hardware-in-the-Loop Simulator

2010 ◽  
Author(s):  
Fuat Cos¸kun ◽  
O¨zgu¨r Tuncer ◽  
Elif Karslıgil ◽  
Levent Gu¨venc¸
Keyword(s):  
Image Processing ◽  
Real Time ◽  
Lane Detection ◽  
Assistance System ◽  
Hardware In The Loop ◽  
Vehicle Model ◽  
Detection And Tracking ◽  
Video Frames ◽  
Assistance Systems ◽  
Lane Keeping

Lane keeping assistance systems help the driver in following the lane centerline. While lane keeping assistance systems are available in some mass production vehicles, they have not found widespread use and are not as common as ESP or ACC at the moment. Lane keeping assistance systems still need further development. Previously available systems have to be continuously adapted to newer vehicle models and fully tested after this adaptation. An image processing algorithm for lane detection and tracking, a lane keeping assistance controller design and a real time hardware-in-the-loop (HiL) simulator developed for testing the designed lane keeping assistance system are therefore presented in this paper. The high fidelity, high order, realistic and nonlinear vehicle model in Carmaker HiL runs as software in a real time simulation on a dSpace compact simulator with the DS1005 and DS2210 boards. A PC is used for processing video frames coming from an in-vehicle camera pointed towards the road ahead. Lane detection and tracking computations including fitting of composite Bezier curves to curved lanes are carried out on this PC. In the present setup, the camera used is a virtual camera attached to the virtual vehicle in Carmaker and provides video frames from the Carmaker animation screen. A dSpace microautobox is available for obtaining the lane data from the PC and the Carmaker vehicle data from the dSpace compact simulator and calculating the required steering actions and sending them to the Carmaker vehicle model. The lane keeping controller is designed in the Matlab toolbox COMES using parameter space techniques. The motivation behind this approach is to develop the lane keeping assistance system as much as possible in a laboratory hardware-in-the-loop setting before time consuming, expensive and potentially dangerous road testing. Lane detection, tracking and curved lane fit results, hardware-in-the-loop simulation results of the lane keeping controller with the image processing system are are used to demonstrate the effectiveness of the proposed method.

scholarly journals Factors contributing to road crashes among commercial vehicle drivers in the Kintampo North Municipality, Ghana in 2017

2020 ◽  
Vol 54 (3) ◽  
pp. 132-139
Author(s):  
Samuel Poku ◽  
Delia Bandoh ◽  
Ernest Kenu ◽  
Emma Kploanyi ◽  
Adolphina Addo- Lartey
Keyword(s):  
Road Traffic ◽  
Traffic Signals ◽  
Bivariate Analysis ◽  
Maximum Speed ◽  
Traffic Light ◽  
Driver Education ◽  
Related Factors ◽  
Cross Sectional ◽  
Road Crashes ◽  
The Road

Objective: The study assessed driver, vehicular and road-related factors associated with road crashes (RC) in the Kintampo North Municipality.Design: Cross-sectional studySetting: Kintampo North MunicipalityData source: Demographics, vehicular and road usage information on registered drivers at Ghana Private Road and Transport Union (GPRTU) and Progressive Transport Owners Association (PROTOA) in Kintampo North MunicipalityMain outcome: involvement in road crashes and related factorsResult: A total of 227 drivers were approached for this study. None of them declined participation. They were all males. Most were between 28-37 years (30%). The proportion of drivers that reported RC ever involvement in at least one RC was 55.5% (95% CI: 8.0%, 62.1%). In the bivariate analysis, drink and drive changed lane without signalling, ever bribed police officer, drove beyond the maximum speed limit, paid a bribe at DVLA for driving license, violation of traffic signals were found to be associated with RC involvement (p<0.05). Drivers who violated traffic signals had 2.84 odds of being involved in road crashes compared to those who did not [aOR; 2.84 (95%CI:1.06,7.63)]Conclusion: The proportion of drivers ever involved in road crashes was high. The major factor that is associated with RC involvement was a violation of the traffic light signals. Continuous driver education and enforcement of road traffic regulations by the appropriate authorities could curb the road crash menace in the Municipality.Keywords: commercial drivers, road crashes, vehicle, road signs, traffic light signalFunding: The authors funded this work.

Driver Assistance Systems with Communication to Traffic Lights - Configuration of Assistance Systems by Receiving and Transmission and Field Experiments -

2010 ◽  
Vol 22 (6) ◽  
pp. 737-744 ◽  
Author(s):  
Shin Kato ◽  
◽  
Naohisa Hashimoto ◽  
Takeki Ogitsu ◽  
Sadayuki Tsugawa ◽  
...  
Keyword(s):  
Field Experiments ◽  
Driver Assistance System ◽  
The State ◽  
Assistance System ◽  
Driver Assistance ◽  
Driver Assistance Systems ◽  
Traffic Lights ◽  
Assistance Systems

We propose some driver assistance systems with communication to traffic lights. It proposes the driver assistance system that uses information from the traffic lights with the state of the signal and time of the cycle. The demand traffic lights systems are also proposed. In addition, a consideration of the configuration and the construction of the experiment systems, and some field experiments for driver assistance are described.

Evaluation of Safety Benefits and Potential Crash Migration Due to Shoulder Rumble Strip Installation on Connecticut Freeways

2005 ◽  
Vol 1908 (1) ◽  
pp. 104-113
Author(s):  
Erika B. Smith ◽  
John N. Ivan
Keyword(s):  
Adverse Effect ◽  
Full Scale ◽  
Speed Limit ◽  
Road Crashes ◽  
Limited Access ◽  
The Road ◽  
Run Off ◽  
Single Vehicle ◽  
Rumble Strip ◽  
Shoulder Rumble Strips

With the encouragement of FHWA, many states are installing shoulder rumble strips to reduce the number of run-off-the-road crashes. In 1996, Connecticut began full-scale installation of shoulder rumble strips on limited-access highways (freeways). This paper describes research aimed at answering three questions about the effectiveness of this project: (a) Do rumble strips reduce single-vehicle, fixed-object crashes? The analysis indicates that installing shoulder rumble strips reduces these crashes by 33%. (b) Do certain roadway factors influence the rate of these crashes with regard to the rumble strip installation locations? In the sections where rumble strips were installed, run-off-the-road crashes were reduced by as much as 48.5% in interchange areas and as little as 12.8% on sections of roadways where the speed limit was less than 65 mph. (c) Is the potential adverse effect of crash migration (from locations with rumble strips to those without) occurring? The roadway factors analyzed and sections of longer routes in Connecticut both indicate increases in run-off-the-road crashes where rumble strips are not placed, even when exposure is controlled. These findings indicate that for rumble strips to be most effective along freeways, consideration should be made for continuous installation both to reduce crashes where they are installed and to avoid increases in crash occurrence where they are not.

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