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63
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Introduction
Ralf Philipsen is a researcher at the Human-Computer Interaction Center at RWTH Aachen University. His research addresses user acceptance and data visualization in different technology contexts with foci on mobility and infrastructure planning. In addition, he investigates decision-making processes in production enterprises, for example, in supply chain and quality management.
Current institution
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April 2014 - present
Publications
Publications (63)
Public transportation is often poorly developed, especially in rural areas, which leads to an increased dependence on personal vehicles. Moreover, since transportation is one of the main drivers of climate change, our research project aims to explore cost-effective methods for sustainable last-mile logistics in rural areas and support decision-make...
Introduction: Artificial Intelligence (AI) has become ubiquitous in medicine, business, manufacturing and transportation, and is entering our personal lives. Public perceptions of AI are often shaped either by admiration for its benefits and possibilities, or by uncertainties, potential threats and fears about this opaque and perceived as mysteriou...
Private motorized transport poses a major challenge for traffic and the environment. Shared mobility might increase traffic efficiency and reduce traffic-related environmental pollution. The use of autonomous shuttles is conceivable for the future, opening further opportunities, e.g., road safety. From the user's point of view, not having their own...
The use of electric cargo bikes (ECBs) can be a solution for emission-free and sustaina-ble mobility as well as for relieving inner cities, which often suffer from air pollution, noise, congestion, and parking pressure caused by conventional cars. However, the successful integration of ECBs into urban transportation systems is highly dependent on t...
Autonomous driving will transform our mobility and transportation of tomorrow. Future passengers appreciate perceived advantages of autonomous mobility (e.g. road safety), yet fear potential disadvantages (e.g. less driving control). Trade-offs between advantages and disadvantages are often mediated by trust in automation. We investigated persons’...
To slow climate change down, a reduction in greenhouse gas emissions is crucial. Part of the solution could be the electrification of cars, but market penetration is progressing slowly so far. It is still unclear to what extent specific user groups, e.g., without private parking/charging space, are willing to buy BEV in the long term. The present s...
With increasing digitization, intelligent software systems are taking over more tasks in everyday human life, both in private and professional contexts. So-called artificial intelligence (AI) ranges from subtle and often unnoticed improvements in daily life, optimizations in data evaluation, assistance systems with which the people interact directl...
The use of autonomous vehicles for automated city centers enables new, innovative mobility solutions, which combine elements of private and public local passenger transport and enables users to achieve a high degree of mobility. Mobility is in a state of constant change because the technical possibilities are increasing and the fast paced developme...
The development towards autonomous driving is about to change our future mobility. Though there is public consent on perceived benefits of autonomous driving, potential drawbacks are also considered. In this survey, we focused on the user-centered assessment of autonomous driving in comparison of two traffic scenarios (“city” vs “highway”) using an...
Road transport still accounts for 21% of CO2 emissions in the European Union, which is why it is necessary to take a closer look at its causes in view of climate change. Commuting to the workplace or educational institution plays a decisive role, accounting for around a quarter of all journeys. While absolute figures for commuting are available in...
The charging network is currently still perceived as a barrier to e-vehicle adoption, even though the vehicles could contribute to climate protection. To plan the necessary mobility infrastructure according to demand, a profound knowledge of car charging and refueling in general is of crucial importance. For a holistic picture, the present paper co...
Human trust is a key factor in the adoption of autonomous vehicles. The development of trustworthy automation design offers the opportunity to address users’ concerns well in advance. However, uncertainties may remain due to the novelty of the technology. Hence, concepts are needed that foster users’ trust also during and after the rollout. In this...
Autonomous driving will provide higher traffic safety, meet climate-related issues due to energy-saving mobility, and offer more comfort for drivers. To ensure reliable and safe autonomous traffic, and to provide efficient and time-critical mobility services, data exchange between road users and systems is essential. In public perception, however,...
Increasing urbanization and the simultaneous growth of car-based individual transport pose major challenges for many cities. On the one hand, streets and parking facilities are reaching their capacity limits, and on the other hand, car emissions are a burden for both residents and environment. A transformation from one-person car use to emission-fr...
Particulate matter and greenhouse gas emissions are two of the main challenges of current mobility. The switch to electric drives, especially in motorized individual transport, could be part of the solution. However, the number of registrations of private battery electric vehicles (BEV) in Germany is currently increasing only slowly. Among other th...
In intelligent autonomous mobility, drivers become passengers tailoring their journey to individual needs. With no human driver on board, the question arises how the exchange of information between passenger and vehicle is appropriately designed as regards the booking process, recognition and welcoming, in-vehicle interaction, etc. To this, detaile...
Although electric drives can locally reduce the environmental impact of traffic, the penetration rates of battery electric vehicles (BEV) are far below expectations, not least because the charging infrastructure network is still considered insufficient by potential users. Therefore, the planning of charging infrastructure that considers both needs...
Within the transport sector, the use of electric drives and renewable energies can significantly reduce greenhouse gas emissions. However, in Germany, sales figures of battery electric vehicles (BEV) are far below the expectation. A major barrier is the current state of the charging infrastructure (CIS), which is not perceived to be in line with th...
Faced with an increasing automation of everyday life, users’ trust in autonomous technologies is a key factor for its successful adoption. Automation of processes, at home or in the transport sector, can offer great advantages (e.g., more comfort and safety), however, transferring control from a human to technology is also a serious challenge for u...
In this article, the public perception and acceptance of novel vehicle technologies – autonomous driving (AD) and connected driving (CD) – is investigated. Following a multistep empirical procedure, we explore participants’ cognitions towards AD and CD. Therefore, a questionnaire study was run in which the perceived benefits and barriers of the tec...
With the advent of artificial intelligence (AI) methods, smart decision support systems are becoming ubiquitous. Such systems help reduce complexity for operators by automating data integration tasks and recommending actions. However, these systems are sometimes flawed. It is not sufficiently understood whether, when and why operators comply with s...
Advancing automation in many technical areas (mobility, production, medicine, etc.) is accompanied by new challenges for the interaction between humans and technical systems. Trust in automation is a key element for the use of technology and for compliance with its recommendations. This also applies to decision support systems (DSS) in the producti...
In this paper, the user requirements for future autonomous mobility services, i.e. autonomous ridesharing and the potential influence of gender are investigated following a two-tiered procedure. Subsequently to interviews, a questionnaire study including 893 participants was conducted, in which attitudes and requirements were evaluated. It turned o...
A broad market penetration of electric vehicles could counteract emissions of greenhouse gases and high particulate matter pollution in cities. However, this is currently prevented by numerous perceived barriers. Government support measures designed to counteract these impediments do not have the desired effect. The present study uses a two-stage a...
The emergence of cyber-physical production systems poses new challenges for designing the interface between production systems and the human-in-the-loop. In this study, we investigate how human operators interact with risks in a supply chain scenario. We varied the financial magnitude and the expected value of the decisions, the combination of two...
The fast developing and intertwining fields of mobility and technology focus human-centered designs more than ever. V2X-technology is one of the major players on that research field, which will influence the people’s behavior in traffic in terms of safety and efficiency. To include all participating members of traffic, four important message featur...
The demand-oriented establishment of a charging infrastructure is crucial for the deep
market penetration of electric vehicles. In order to identify specific optimal locations for
charging stations, a deeper understanding of the users’ charging behavior is required. For
reliable simulations and forecasts, it is not only necessary to take the chargi...
The increasing development of autonomous vehicles (AVs) influences the future of transportation. Beyond the potential benefits in terms of safety, efficiency, and comfort, also potential risks of novel driving technologies need to be addressed. In this article, we explore risk perceptions toward connected and autonomous driving in comparison to con...
A realistic view on what new technology can or cannot handle safely should enhance the interaction of driver and technology from first activation on. Wrong assumptions on how technology functions might result in critical driving situations or prevent the activation of an otherwise useful system. Addressing different forms of information given to a...
Electric vehicles are currently seen as the most promising approach for the mobility sector to do it’s bit for the reduction of greenhouse gas emissions. Although, there are still impediments to adoption, which may partly be overcome by a fast charging infrastructure that enables long-haul trips with battery electric vehicles (BEV). The presented w...
A need-based fast-charging network for battery electric vehicles provides an opportunity to remove widespread impediments to adoption and thereby increase market penetration of electromobility. In that regard, it is crucial to know, whether experience with gas station planning, regarding position and business models, can easily be transferred to ch...
There are a variety of civil usage contexts for “drones” or multicopters, unmanned aerial vehicles or remotely piloted aircraft systems. Probably best known is the so-called delivery drone that many companies are testing and hoping to deploy. But the acceptance of said technology, especially those equipped with cameras, by the public is rarely inve...
Supply Chains and production networks are complex sociotechnical systems whose performance is determined by system, interface, and human factors. While the influence of system factors (e.g., variances in delivery times and amount, queuing strategies) is increasingly well understood, the influence of the interface and human factors is currently insu...
The spread of a charging infrastructure for battery electric vehicles is crucial for both coping with the increasing number of electric vehicles and reducing users’ impediments to adoption. Therefore, the selection of optimal (fast-)charging locations determines acceptance, utilization, and thus, the economic viability of a single site or the whole...
Currently, the trust in V2X-technology is naturally expected. To share private data with novel technologies is not a new phenomenon today, but data security and privacy are worldwide topics, which are constantly gaining importance. Therefore, the present paper will show influential user factors for technology acceptance and the willingness to share...
Mobility is a fast developing, technological and simultaneously human field of research. V2X-technology is one major contributor that will influence the behavior, efficiency and safety of traffic participants. To include all participating members of traffic, we developed a V2X-smartphone application to empower vulnerable road user to be part of the...
Supply Chains and production networks are complex sociotechnical cyber-physical systems whose performance is determined by system, interface, and human factors. While the influence of system factors (e.g., variances in de- livery times and amount, queuing strategies) is well understood, the influence of interface and human factors on supply chain p...
The spread of electric vehicles can be a partial solution for reducing greenhouse gas emissions, which are a major challenge of modern industrial nations. However, the limited ranges and the fragmentary charging infrastructure are currently impediments to adoption. To develop a need-based fast-charging network users’ requirements on preferred charg...
The word “drone” is commonly associated with the military. However, the same term is also used for multicopters that can be and are used by civilians for a multitude of purposes. Nowadays, drones are tested for commercial delivery of goods or building inspections. A survey of 200 people, laypersons and active users, on their acceptance and perceive...
Deep penetration of modern information and communication technology in manufacturing companies (vertical integration) and across supply chains (horizontal integration) leads to an increasing amount and complexity of information that needs to be perceived, filtered, processed, and reacted to. Yet, the human factors that influence performance are ins...
Currently, V2X-technology is a highly prominent research topic. The numerous advantages, possible applications and development opportunities of this intelligent technology connection into everywhere traffic situations encourage research associations worldwide to work together. Main goals are the reduction of traffic accidents, optimization and incr...
The increasing dynamic and complexity of todays global supply chains and the growing amount and complexity of information challenge decision makers in manufacturing companies. Decision Support Systems (DSS) can be a viable solution to address these challenges and increase the overall decision efficiency and effectivity. However, a thought-through d...
Globalized markets, product complexity, and increased requirements on quality lead to growing complexity of business and manufacturing processes. Game-Based learning environments and business simulation games offer great potential to prepare employees the increasing complexity. As it is unclear who profits most from these learning environments, we...
This work aims at an evaluation of vehicle-toinfrastructure (V2X)-technology through the users’ perspective.
The technical opportunities of connected vehicles are affected by the acceptance of the technology and possible draw-backs on the privacy and data-security side. With a three-tiered research approach, this work identified beforehand argument...
The present research reports an empirical study targeting the analysis of evaluation criteria for fast-charging locations regarding both position and concrete realization. Involving both current and potential users of electric mobility technology discovers criteria for public acceptance as well as a description of possible drawbacks. A questionnair...
The paper will show, how different types of users are evaluating privacy and data security differently according to contextual differentiating traffic situations. The focus is hereby on an analysis of user types to see, if general attributes towards data capture can be identified. User requirements are investigated in age, gender, experience with d...
Today’s production systems are complex sociotechnical systems. Both technical challenges, as well as the integration of human employees with their diverse abilities, wants, and needs, must be considered. Due to a growing number of product variants, shorter lead times, and global supply chains, planning production systems is becoming increasingly di...
Beyond the increasing quality of car technology in the last decade, road and fast-paced city traffic in metropolises still impose high accident rates. Mostly, drivers’ inattentiveness, tiredness or just bad driving abilities are responsible for safety risks. Novel developments such as the combination of in-vehicle systems and ve-hicle sensors in th...
Today’s cities endure major risks like global warming due to gas emissions. This is challenging for both humans and technical developments. E-mobility, however, raises the opportunities of enhancing a more sustainable mobility (structure) and providing healthier living in future cities. The paper identifies not only which locations of fast-charging...
Today, we are on the edge of increasing population and urbanization with an increasing portion of older people. These far-reaching societal developments necessitate novel mobility infrastructure concepts, in which a diverse population and a higher population density are considered. Safety in traffic situations is one of the most important and needs...
Quality management is an important function for viable production networks. In order to qualify decision makers to understand the fundamental principles of quality management in production networks, a game-based simulation and learning environment is developed, which can furthermore be used to understand how human factors influence the quality of d...
Quality management is an important aspect of viable manufacturing processes. In order to qualify decision makers to understand the fundamental principles of quality management in production networks, we developed a game-based simulation and learning environment that can furthermore be used to understand how human factors influence the quality of de...
Quality management in production networks is often neglected. To raise awareness for this subject, we developed an educational game in which players are responsible for managing orders and investments in quality assurance of a manufacturing company. To understand individual performance differences and playing strategy, we conducted a web-based stud...
