Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Collision Warning"”.
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Probabilistic Estimation of State via Propagation of Error for a Collision Warning System
… the primary concern is UAS related midair collisions. The University of Washington Department of Aeronautics \& Astronautics Autonomous Flight System Laboratory (AFSL) is collaborating with Insitu, a UAS company, to develop a collision warning and awareness plugin (CAPlugin) for Insitu's …
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Augmented Reality Pedestrian Collision Warning: An Ecological Approach to Driver Interface Design and Evaluation
… identify information requirements for pedestrian collision warning, (2) design AR driver interfaces, and (3) quantify effects of AR interfaces on driver performance and experience. Considering the dynamic nature of human-environment interaction in AR-supported driving, we took an ecological …
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Pulse rate, pulse pattern, and onset distance effects on subject braking responses while using an auditory collision warning signal
… distance had on the performance of an auditory warning signal. The warning signal's purpose was to alert mobile crane operators of their proximity to overhead power lines. The study consisted of two experimental phases. The first phase consisted of three sections; A) development and construction …
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Intelligent Road Control System Using Advanced Image Processing Techniques
… pavement inspection, vehicle tracking, and collision warning. In the pavement inspection part, the SVM is used to extract the pavement from the background in a given image. The Radon transform is then applied to the pure pavement image to classify the crack to a particular type. In the …
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Approaches to enhance driver situational assessment aids
Collision warning systems encounter a fundamental trade-off between providing the driver more time in which to respond and alerting the driver unnecessarily. The probability that a driver successfully avoids a hazard increases as the driver is provided more time and distance in which to identify …
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The design of a 94 GHz high resolution coherent radar
… applications, with the specific use as an early warning radar ,against high voltage transmission lines. The recent development of solid-state components for frequencies around 94 GHz has made it possible to design coherent millimetre-wave radar systems. Key components of such systems are high …
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Safety analysis of freeway interchange speed change lane facilities
… events. These are the critical time to collision (TTC), advance warning time to collision (AWTTC), and speed reduction of lead vehicles. The analysis was conducted for all traffic densities and separately for each level of service. The study also uses inverse TTC profiles to identify the …
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A Simulator-Based Investigation of Visual, Auditory, and Mixed-Modality Display of Vehicle Dynamic State Information to Commercial Motor Vehicle Operators
… study examined the use of conventional auditory warnings (tonal, non-verbal sounds) and auditory icons> (representational non-verbal sounds), alone and in combination with a dash-mounted visual display, to present information about impending collision situations to commercial motor vehicle …
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Development of a performance-based approach for collision avoidance and mitigation
… of threshold equations that predict when a collision is to occur. The fact that there are numerous algorithms suggests a need to understand the underlying principles behind the equation design and threshold settings. This thesis presents a methodology to develop appropriate alerting …
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A Cyclist Detection and Tracking System for Heavy Goods Vehicles
… Vehicles (HGVs) contribute to a large portion of collisions with cyclists, and a disproportionate number of these are caused by construction vehicles. Among all these collisions, the sides-of-HGV impacts make up the largest share. Technologies such as advanced mirrors, improved design of direct …
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Leveraging Information Sharing for Satellite Navigation and Coordination
… of objects in orbit grows, so does the risk of collisions. The sheer volume of collision warning messages far exceeds the capacity of human analysts, placing a significant burden on satellite operators and underscoring the need for autonomous, decentralized traffic management. Unlike centralized …
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Channel Propagation Model for Train to Vehicle Alert System at 5.9 GHz using Dedicated Short Range Communication
The most common railroad accidents today involve collisions between trains and passenger vehicles at railroad grade crossings [1][2]. Due to the size and speed of a train, these collisions generally result in significant damage and serious injury. Despite recent efforts by projects such as …
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Methodology for Determining Crash and Injury Reduction from Emerging Crash Prevention Systems in the U.S.
… safety systems, which aim to prevent or mitigate collisions. These systems are expensive to develop and as a result automakers and regulators are motivated to forecast the potential benefits of a proposed safety system before it is widely deployed in the vehicle fleet. The objective of this …
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Connected Vehicle Technology: User and System Performance Characteristics
… and tested on thirty licensed drivers. Forward collision warning messages were delivered to drivers when predefined time-to-collision values take place. The findings show improved reaction times of drivers when receiving the warning messages which lend credence to the safety benefits of the CV …
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Development of a vehicle dynamics controller for obstacle avoidance
… improve the safety of road users. Longitudinal collision warning and collision avoidance systems are starting to appear on production cars to assist drivers when required to stop in an emergency. Many luxury cars are also equipped with stability augmentation systems that prevent the car from …
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Prospects for the Collision-Free Car: The Effectiveness of Five Competing Forward Collision Avoidance Systems
Rear-end collisions in which the leading vehicle was stationary prior to impact and at least one vehicle was towed from the crash site represent 18% of all yearly crashes in the United States. Forward Collision Avoidance Systems (FCASs) are becoming increasingly available in production vehicles and …
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An Investigation of Auditory Icons and Brake Response Times in a Commercial Truck-Cab Environment
… applications, but also as emergency braking warnings. The use of auditory icons in commercial truck cabs has the potential to increase the number of auditory displays that can be distinguished and understood by commercial vehicle operators, and this experiment sought to determine the utility …
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A Data Fusion Approach to Automated Decision Making in Intelligent Vehicles
The goal of an intelligent transportation system is to increase safety, convenience and efficiency in driving. Besides these obvious advantages, the integration of intelligent features and autonomous functionalities on vehicles will lead to major economic benefits from reduced fuel consumption to …
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Driver Comprehension of Integrated Collision Avoidance System Alerts Presented through a Haptic Driver Seat
… automobile drivers of various types of impending collisions have been developed. How these systems alert drivers when integrated, however, is a crucial component to their effectiveness that hinges on the consideration of human factors. Drivers' ability to comprehend multiple alerts presented …