Now showing items 36244-36263 of 49888

    • S235JRC+C Steel Response Analysis Subjected to Uniaxial Stress Tests in the Area of High Temperatures and Material Fatigue

      Josip Brnic; Marino Brcic; Sebastian Balos; Goran Vukelic; Sanjin Krscanski; Mladomir Milutinovic; Miroslav Dramicanin (MDPI AG, 2021-05-01)
      Knowledge of the properties and behavior of materials under certain working conditions is the basis for the selection of the proper material for the design of a new structure. This paper deals with experimental investigations of the mechanical properties of unalloyed high quality steel S235JRC + C (1.0122) and its behavior under conditions of high temperatures, creep and mechanical fatigue. The response of the material at high temperatures (20–700 °C) is shown in the form of engineering stress-strain diagrams while that at creep behavior (400–600 °C) is shown in the form of creep curves. Furthermore, based on uniaxial fully reversed mechanical fatigue tests (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><mo>=</mo><mo>−</mo><mn>1</mn></mrow></semantics></math></inline-formula>), a stress-life (S-N) fatigue diagram has been constructed and the fatigue (endurance) limit of the material is calculated The experimentally determined value of tensile strength at room temperature is 534 MPa. The calculated value of the fatigue limit, also at room temperature, using the modified staircase method and based on the mechanical fatigue tests data, is 202 MPa. With regard to creep resistance, steel 1.0122 can be considered creep-resistant only at a temperature of 400 °C and at an applied stress not exceeding 50% of the yield strength corresponding to this temperature.
    • Sacrificial Pseudoreplication in LEED Cross-Certification Strategy Assessment: Sampling Structures

      Svetlana Pushkar (MDPI AG, 2018-04-01)
      The study aims to suggest sampling structures to avoid sacrificial pseudoreplication in the evaluation of Leadership in Energy and Environmental Design (LEED)-certified projects. The sampling includes two structures that exclude sacrificial pseudoreplication and one structure that leads to sacrificial pseudoreplication: (i) The state is the sampling frame in which LEED projects are treated as primary sampling units; (ii) The US is the sampling frame, the state is the primary sampling unit in which LEED projects are treated as evaluation units; and (iii) The US is the sampling frame in which LEED projects are pooled from different states and treated as primary sampling units. The three sampling structures are applied to the evaluation of the Silver-to-Gold cross-certification performances of LEEDv3 for new construction and LEEDv3 for existing buildings. The same cross-certification strategy was revealed if either structure (i) or structure (ii) was applied, while it was poorly estimated and misinterpreted if structure (iii) was applied, i.e., sacrificial pseudoreplication had occurred.
    • SAD but True: Species Awareness Disparity in Bees Is a Result of Bee-Less Biology Lessons in Germany

      Laura Christ; Daniel C. Dreesmann (MDPI AG, 2022-02-01)
      Bee and insect mortality has recently moved to the forefront of current nature conservation debates and experiences intensive media coverage worldwide. In order to understand the complexity, it is necessary to raise awareness of the diversity of bees. This study investigated whether students are aware of the species diversity of bees. We are guided by the concept of ‘plant blindness’ and show that it cannot be assumed that people are only ’plant-blind’. Therefore, we introduce the concept of Species Awareness Disparity (SAD) in bees to describe a phenomenon which can be defined as the failure to appreciate the significance of wild bee species and the inability to distinguish between individual species of the Apidae family. A total of 421 German students in grades 5–7 participated. The majority of students did not associate a diversity of species with the term ‘wild bee’ but rather consider the honeybee as the bee. Only 2.7% (N = 421) of the students were able to correctly identify pictures of wild bees and the honeybee. This highlights the importance of educating students about the identity and nature of bees in their environment so that they become aware of their meaning from both a personal and an ecological perspective.
    • Safe and Ecological Speed Control for Heavy-Duty Vehicles on Long–Steep Downhill and Sharp-Curved Roads

      Huifu Jiang; Wei Zhou; Chang Liu; Guosheng Zhang; Meng Hu (MDPI AG, 2020-08-01)
      To contribute to the development of sustainable transport that is safe, eco-friendly, and efficient, this research proposed a safe and ecological speed control system for heavy-duty vehicles on long–steep downhill and sharp-curved roads under a partially connected vehicles environment consisting of connected heavy-duty vehicles (CHDVs) and conventional human-driven vehicles. This system prioritizes braking and lateral motion safety before improving fuel efficiency and ensuring traffic mobility at optimal status, and optimizes the speed trajectories of CHDVs to control the entire traffic. Speed optimization is modelled as an optimal control problem and solved by the iterative Pontryagin’s maximum principle algorithm. The simulation-based evaluation shows that the proposed system effectively reduces the peak temperature of the brake drums, the lateral slip angle of the vehicle wheels, and the lateral load transfer rate of the vehicle body; all these measurements of effectiveness are limited to safe ranges. A detailed investigation reveals that the proposed system reduces fuel consumption by up to 15.49% and inhibits the adverse effects on throughput. All benefits increase with the market penetration rate (MPR) of CHDVs and the traffic congestion level and reach significant levels under low MPRs of CHDVs. This indicates that the proposed system has good robustness for the impedance from conventional vehicles and could be implemented in the near future.
    • Safe Spaces for Disruptive Learning in a North–South Research Partnership Context: International Mobility of DoctoralStudents

      Lilian Julia Trechsel; Anne Barbara Zimmermann; Camilla Steinböck; Thomas Breu; Karl Herweg; Susan Thieme (MDPI AG, 2021-02-01)
      This article spans issues of international student mobility, inequalities in higher education, and spaces for transformative learning for sustainable development. We tracked PhD alumni of an international Swiss research program in 2012 and 2017 and found that students from the global South experienced a significant, immediate career boost; most graduates decided to remain in or return to their country of origin after graduation (brain circulation). Career advancement among global North students took longer to develop. In-depth interviews with selected graduates gave students a voice: they felt empowered by networks, new friendships, and working relationships across disciplinary boundaries. The “safe spaces” or “Third Spaces” created in the program—encompassing inter- and transdisciplinary approaches, institutional and cultural diversity, and a real-world focus—were key for transformative learning, supported by an unconventional teaching and research strategy. To support disruptive learning leading to changes in mindsets and to reduce inequality in higher education, Western universities must question their own privileged position.
    • Safe Working Cycle: Is It a Panacea to Combat Construction Site Safety Accidents in Hong Kong?

      Daniel W. M. Chan; Douglas O. Aghimien (MDPI AG, 2022-01-01)
      In Hong Kong, the accident statistics of the construction industry is still comparatively higher than other industries. However, accident rates within the industry have significantly decreased, starting from the implementation of diverse safety initiatives, including the Safe Working Cycle (SWC). In this study, a post-positivist philosophical stance was adopted, and a questionnaire survey was launched to gather empirical data on the application of SWC in construction projects, the effectiveness of the safety initiative, and the benefits thereof. The data gathered from 197 construction participants were analysed using descriptive statistics, mean score, Mann–Whitney U-Test, Kendall’s concordance analysis, Chi-square value, Spearman rank-order correlation test and exploratory factor analysis. The findings revealed significant adoption of SWC in the Hong Kong construction industry. Furthermore, daily, weekly, and monthly inspections and supervisions and safety committee meetings are effective items of this safety initiative. The benefits of adopting SWC can be grouped into the safety of frontline workers and increase in the organisation’s safety commitment and reputation. This study has created an excellent theoretical platform for future research work on the usefulness of the SWC in the construction industry at large.
    • Safeguarding against Harm in a Climate-Smart Forest Economy: Definitions, Challenges, and Solutions

      Kylie Clay; Lauren Cooper (MDPI AG, 2022-04-01)
      Sustainably managed forests and forest products have a well-documented potential to deliver significant climate change mitigation benefits via sequestration, storage, and substitution (the 3Ss) when they are sourced sustainably and substituted for traditional resource-intensive materials. Moving beyond product-specific considerations, a climate-smart forest economy (CSFE) aims to bolster the 3Ss and catalyze broader systemic change to address the climate crisis. In their most successful cases, forest value chain interventions that lead to CSFEs will link secondary and tertiary sectors for greater waste reduction, substitution, innovation, and overall cascading climate benefits. However, interventions that contribute to CSFEs, from small to large scale, will inevitably impact environments and communities, both directly and indirectly. While positive impacts can be thought of as co-benefits and should be encouraged, negative impacts are considered negative externalities, and these should be avoided or minimized wherever possible by safeguarding against harm. The failure to minimize negative externalities will have implications for equity, project longevity, and climate benefits. This paper provides preliminary results of mixed methods research with an aim of identifying and building consensus on the definitions, challenges, and solutions relevant to the assessment, planning, and implementation of CSFE safeguards. While broad and novel CSFE safeguards application faces diverse challenges, this paper explores practical solutions to advance and set a foundation for future dialogue, analysis, and application.
    • Safeguarding Free-Flowing Rivers: The Global Extent of Free-Flowing Rivers in Protected Areas

      Jeffrey J. Opperman; Natalie Shahbol; Jeffrey Maynard; Günther Grill; Jonathan Higgins; Dieter Tracey; Michele Thieme (MDPI AG, 2021-03-01)
      Approximately one-third of long rivers remain free-flowing, and rivers face a range of ongoing and future threats. In response, there is a heightened call for actions to reverse the freshwater biodiversity crisis, including through formal global targets for protection. The Aichi Biodiversity Targets called for the protection of 17% of inland water areas by 2020. Here, we examine the levels and spatial patterns of protection for a specific type of inland water area—rivers designated as free-flowing. Out of a global total of 11.7 million kilometers of rivers, 1.9 million kilometers (16%) are within protected areas and 10.1 million kilometers are classified as free-flowing, with 1.7 M kilometers of the free-flowing kilometers (17%) within protected areas. Thus, at the global level, the proportion of rivers in protected areas is just below the Aichi Target, and the proportion of free-flowing rivers within protected areas equals that target. However, the extent of protection varies widely across river basins, countries, and continents, and many of these geographic units have a level of protection far lower than the target. Further, high discharge mainstem rivers tend to have lower extent of protection. We conclude by reviewing the limitations of measuring river protection by the proportion of river kilometers within protected areas and describe a range of mechanisms that can provide more effective protection. We also propose a set of recommendations for a more comprehensive quantification of global river protection.
    • Safety Analysis of a Modified Cooperative Adaptive Cruise Control Algorithm Accounting for Communication Delay

      Yi Liu; Wei Wang; Xuedong Hua; Shunchao Wang (MDPI AG, 2020-09-01)
      Cooperative adaptive cruise control (CACC) is a promising technology to improve traffic efficiency and enhance road safety. In this paper, a modified CACC control model considering the communication time delay is proposed, which is used to investigate the longitudinal safety impacts of the communication time delay to the CACC platoon. Then, the communication time delay model is integrated into the CACC model to simulate the realistic information transfer process in the CACC platoon. Then a microscopic CACC platoon simulation is designed and conducted to verify the feasibility and reliability of the modified CACC control algorithm. The obtained results reveal that the modified CACC control algorithm can not only reduce about 96.6% of inter-vehicle spacing error, but also enhance the vehicles’ ability to sense the upstream traffic changes. Furthermore, to quantitatively analyze the longitudinal safety influence of the time delay caused by representative communication systems, sensitivity analysis experiments of headway time were designed and conducted. In the sensitivity analysis, the time exposed time-to-collision (TET) and the time-integrated time-to-collision (TIT) were introduced as the key performance indicators (KPIs) to quantify the rear-end collision risks. Sensitivity analysis results demonstrate that the performance of the CACC platoon is strictly related to the applied wireless communication style. Furthermore, the CACC system supported by the 5th generation (5G) communication system shows great advantages in narrowing the minimal headway time gap and reducing the rear-end collision risks.
    • Safety Analysis of Young Pedestrian Behavior at Signalized Intersections: An Eye-tracking Study

      Chiara Gruden; Irena Ištoka Otković; Matjaž Šraml (MDPI AG, 2021-04-01)
      Smartphones have become an integral part of our everyday lives and keep us busy while doing other primary activities such as driving, cycling or walking in traffic. The problem of digital distraction among drivers has been largely addressed, and interest is growing also on vulnerable road users as well. In fact, high percentages of pedestrians and cyclists are accustomed to checking their devices while moving in traffic. This research links to the presented theme and aims to investigate the extent to which digital distraction in the form of social media app checking influences pedestrian behavior. The focus of the study is specifically on signalized intersections. An outdoor, eye-tracking experiment was conducted on a specific route consisting of various elements typical of urban areas. Participants were asked to walk the predefined route twice, encountering three signalized intersections: the first time they were asked to walk with their smartphone in hand, the second time without. The recordings of each participant’s route were then analyzed, examining reaction time, crossing time and speed, fixations and gaze paths. The results show a clear impact of digital devices on pedestrians’ attention by increasing their reaction and crossing times and decreasing crossing speeds. In addition, the analysis of fixations found that 82.54% of the time was devoted to the smartphone, while interest in other street elements decreased from 16.64% to 4.03%.
    • Safety and Efficiency Analysis of Turbo Roundabout with Simulations Based on the Lujiazui Roundabout in Shanghai

      Qiujia Liu; Jiali Deng; Yifan Shen; Wenxin Wang; Zhan Zhang; Linjun Lu (MDPI AG, 2020-09-01)
      Traditional multilane roundabouts have many branch lanes without traffic signs and channelization, which leads to a high tendency for traffic collisions. Turbo roundabouts are a new design that has the potential to reduce lane-change conflicts using canalization to force drivers to keep in specific lanes based on their intended destination. This paper evaluates the safety and efficiency performance of turbo roundabouts for the case of a five-leg roundabout called Lujiazui in Shanghai and provides design and construction guidelines when applying the turbo design. The models for the Lujiazui roundabout and the reconstructed turbo version were built in Vissim, and a comprehensive series of experiments under different traffic volumes and central island radii was performed. Afterward, the conflict statistics extracted from the trajectory files in the Surrogate Safety Assessment Model (SSAM) were analyzed using the conflict severity index (CSI) and were then integrated to calculate the modified conflict frequency (MCF) for safety performance evaluation. A comparative efficiency analysis was also conducted as a supplement. Based on the results, the relative characteristics for safety and efficiency between the turbo and original designs of the Lujiazui roundabout were analyzed. Suggestions to apply the turbo design on a five-leg roundabout are introduced.
    • Safety and Health Concerns for the Users of a Playground, Built with Reused Rotor Blades from a Dismantled Wind Turbine

      Piero Medici; Andy van den Dobbelsteen; David Peck (MDPI AG, 2020-04-01)
      This paper analyses the user safety of a playground built out of reused blades from a dismantled wind turbine. Located in Rotterdam and designed by the Netherlands architecture firm Superuse Studios, the playground, called “Wikado”, represents an example of the circular economy applied to the built environment. With reused materials, Wikado represents a saving in resources and energy, when compared to a standard playground built with primary materials. Furthermore, the playground creates a unique design experience for its users, who can still recognise the original rotor blades following their transformation into slides, platforms, and tunnels. However, the safety of the playground could be questioned. This paper will analyse the materials and products used in the playground and their condition some years after opening. The analysis focuses on the risks of human health during the use of the playground. It considers the shape and the sharpness of the rotor blades, its components such as glass fibres and epoxy resin. As a result of the analysis, two risk analysis conceptual models help to assess the health concerns regarding the contact with the materials, and some yellow drops leaching from the rotor blades. This analysis informs the contemporary debate concerning the reuse of materials, and more generically, the circular economy applied to the built environment: whether it is recommended and safe to reuse materials for a different function from that which they were originally designed. This paper will explain that in the analysed case study, it can be safe to reuse materials for a different function, but only with the appropriate precautions.
    • Safety and Nonoptimal Usage of a Protected Intersection for Bicycling and Walking: A Before-and-After Case Study in Salt Lake City, Utah

      Torrey Lyons; Dong-ah Choi; Keunhyun Park; S. Hassan Ameli (MDPI AG, 2020-11-01)
      This paper describes a before-and-after case study of a protected intersection in Salt Lake City, Utah. The intersection was completed in late 2015 and represented one of the first examples of a protected intersection design in North America. We analyzed bird’s-eye view video data that was recorded before the intersection was implemented and compared it against video data recorded from the exact same location after implementation. In order to examine changes in intersection usage and behavior, we operationalized safety in terms of the frequency of nonoptimal behaviors demonstrated by active transportation modes. We found that active transportation usage of the intersection has increased since the new configuration, with most of that growth attributable to e-scooter users. There was minimal change in the rates of nonoptimal behaviors by pedestrians. Bicyclists showed mostly decreased rates of nonoptimal behaviors, suggesting improved safety for this mode. E-scooter users, however, demonstrated nonoptimal behaviors at very high rates as compared with other active modes. This case study gives evidence that a protected intersection can have positive effects on active transportation volume and safety in a U.S. context.
    • Safety Assessment Model for Dangerous Goods Transport by Air Carrier

      Hongli Zhao; Ning Zhang; Yu Guan (MDPI AG, 2018-04-01)
      The safety of dangerous goods transport by air is directly related to human health and environmental pollution. This paper investigates a model to evaluate the safety performance of the transport of dangerous goods by air carriers. Based on a literature review, international regulations related to dangerous goods air transportation, and expert opinions, this paper identifies an assessment factor system with five drivers: organization/regulations, equipment/facilities, operations, emergency, and training. A hybrid evaluation method of a joint analytical hierarchy process and entropy weight is used to determine the importance of each factor and driver. The results suggest that the regulation of dangerous goods acceptance, sufficient equipment/facilities, and the condition of the equipment/facilities are the most important factors affecting the safety performance of dangerous goods transportation by air. An empirical study reveals that the proposed model is stable and reliable; thus, the model can guide resource allocation for air carriers to improve safety management of dangerous goods transportation.
    • Safety Assessment of Channel Seepage by Using Monitoring Data and Detection Information

      Mengdie Zhao; Chao Zhang; Shoukai Chen; Haifeng Jiang (MDPI AG, 2022-07-01)
      Seepage analysis has always been the focus of channel safety and stability research. Establishing a diagnosis method based on osmotic pressure monitoring data and combining the detection information to achieve osmotic safety is also an effective way to ensure the safety and stability of osmotic engineering. In this paper, a high-fill channel section of a water diversion project is taken as an example, and the study of osmotic safety is carried out by analyzing the engineering characteristics of linear engineering. High-fill channel sections were selected to study the temporal and spatial characteristics of various monitoring data reflecting the osmotic behavior of linear engineering; that is, these data reflect the time-varying regularity characteristics of the osmotic pressure value and the changing regularity of environmental variables. A single-point multifactor model of the monitoring data was established by establishing an evaluation index system, combining the monitoring index value method and the cloud model theory method according to the distribution law of the measured data and considering the uncertainty of the osmotic pressure data. Additionally, this model was integrated with the set pair analysis method to determine the monitoring data evaluation level; channel detection data information was collected, the abnormal detection of detection information was realized, and the monitoring data results were used to verify the detection results. In this way, an adaptive evaluation method reflecting the working behavior of high-filled channel sections is established, and a diagnostic technology for the safe operation of high-filled channel sections of linear engineering is proposed. The application results show that this method is suitable for engineering an osmotic safety assessment.
    • Safety Assessment of Urban Intersection Sight Distance Using Mobile LiDAR Data

      Omar Kilani; Maged Gouda; Jonas Weiß; Karim El-Basyouny (MDPI AG, 2021-08-01)
      This paper proposes an automated framework that utilizes Light Detection and Ranging (LiDAR) point cloud data to map and detect road obstacles that impact drivers’ field of view at urban intersections. The framework facilitates the simulation of a driver’s field of vision to estimate the blockage percentage as they approach an intersection. Furthermore, a collision analysis is conducted to examine the relationship between poor visibility and safety. The visibility assessment was used to determine the blockage percentage as a function of intersection control type. The safety assessment indicated that intersections with limited available sight distances (ASD) exhibited an increased risk of collisions. The research also conducted a sensitivity analysis to understand the impact of the voxel size on the extraction of intersection obstacles from LiDAR datasets. The findings from this research can be used to assess the intersection without the burden of manual intervention. This would effectively support transportation agencies in identifying hazardous intersections with poor visibility and adopt policies to enhance urban intersections’ operation and safety.
    • Safety Attitude as a Predictor of the Sense of Threat in the Workplace, Using the Example of Airport Ground Staff

      Małgorzata Dobrowolska; Marta Stasiła-Sieradzka; Jarosław Kozuba (MDPI AG, 2020-08-01)
      In its development, air transport is obliged to take into account guidelines related to its sustainability. An important element thereof consists of making sure that the working conditions for all the workers employed in this sector are safe and healthy. The aim of this research was to analyze the relationship between the attitude towards safety and the perceived feeling of threat in the workplace among respondents belonging to the airport ground staff occupational group. The research verified the following: 1. whether a relationship exists between the safety attitude (in the following dimensions: affective, cognitive, and behavioral) and the feeling of threat in the workplace (in the following dimensions: internal discomfort related to the fear of potential threats, the fear of current threats, and seeking to avoid threats); 2. whether attitudes towards safety act as predictors of the feeling of threat in the workplace. A total of 299 individuals took part in the research. Purposive sampling was used, based on criteria related to the respondents being members of airport ground staff. The Safety Attitudes Questionnaire by M. Znajmiecka-Sikora was used in the research. The feeling of threat was assessed using Feeling of Threat at Work Questionnaire by Mamcarz. The results obtained confirmed the assumed negative correlation between the main variables, and at the same time they revealed that among the studied safety attitude components, only the affective component makes it possible to predict the general feeling of threat, being its negative predictor (β = −0.14; s.e. = 0.33; t = −2.27; p = 0.024). The affective component of the safety attitude also constituted a negative predictor of one of the dimensions of the studied feeling of threat, namely seeking to avoid threats (β = −0.22; s.e. = 0.17; t = −3.66; p < 0.001).
    • Safety Barriers Identification, Classification, and Ways to Improve Safety Performance in the Architecture, Engineering, and Construction (AEC) Industry: Review Study

      Mohammed N. Maliha; Yazan I. Abu Aisheh; Bassam A. Tayeh; Ali Almalki (MDPI AG, 2021-03-01)
      The Architecture, Engineering, and Construction (AEC) industry is one of the most dangerous industries due to its unique nature. Safety is a critical issue in developed and developing countries. The main objective of this paper was to identify and classify the barriers that hinder the implementation of safety in projects and ways to improve safety performance. The method used in this paper includes a heavy review of many sources related to the safety barriers in the AEC industry, including a process of identification and classification of these barriers, after which we discuss the most popular methods between them, based on the appearance of it in the sources which were reviewed. Then, the ways to improve safety performance were viewed in AEC industry. Based on that, it was found that there are the following 4 categories associated with safety barriers: (1) Behavior Barriers; (2) Management Barriers; (3) Awareness Barriers; and (4) Culture Barriers. At the same time, the most popular barriers are based on appearance in sources: lack of safety training, lack of commitment, work pressure is high when deadlines are approaching, and low level education, lack of experience, and lack of knowledge. The many ways to improve safety performance are illustrated in the end of this paper. The results of this paper show the importance of safety and that the actual safety of the projects should be focused on in order to reduce injuries, accidents, and reduce barriers of applying safety, which will enhance the sustainability and development of safe environments within in AEC industry.
    • Safety Built Right in: Exploring the Occupational Health and Safety Potential of BIM-Based Platforms throughout the Building Lifecycle

      Madeleine Hoeft; Catherine Trask (MDPI AG, 2022-05-01)
      This article investigates the opportunities of using digital building platforms based on Building Information Modelling (BIM) to increase occupational health and safety (OHS) in building design, construction, operation and deconstruction. The data collection followed a mixed-method approach with a systematic mapping review and focus group discussions with industry practitioners from the Swedish construction and real estate industry. Use cases were identified from both venues, as were prevailing barriers, potential facilitators, best practices and future applications. The findings highlight OHS potentials of digital building platforms for Rule-Based Checking and Design Validation, Team Building and Communication, Site Layout and Task Planning, Real-Time Monitoring, Equipment and Temporary Structures, Robotic Task Performance and Learning and Documentation. A set of principles is proposed to promote a higher degree of lifecycle and stakeholder integration: (1) technology, (2) data and information, (3) business and organization, (4) people and communication and (5) industry structure and governance aspects.
    • Safety Concerns and Travel Behavior of Generation Z: Case Study from the Czech Republic

      Miroslav Rončák; Petr Scholz; Ivica Linderová (MDPI AG, 2021-12-01)
      Generation Z has been online since the beginning, the online space is an integral part of their lives and personalities, and they make up about 30% of the world’s population. It is claimed that this youngest cohort is already the most numerous generation on the Earth. The most important holiday parameters for them are price and location. They want to explore new places and be active while abroad. The study examines the impact of safety concerns on changes in travel behavior during the COVID-19 pandemic. We focused on members of Generation Z who study the Tourism and the Recreation and Leisure Studies programs, so these students have a positive attitude towards traveling. Data were collected via internal university systems at two periods of time connected to different stages of the pandemic outbreak. The sample was chosen randomly. The sample of Period 1 (n = 150) was composed in 2020, after the lifting of restrictions at the end of the first wave of the COVID-19 pandemic in the Czech Republic. The sample of Period 2 (n = 126) was collected one year later, after the lifting of restrictions at the end of the third wave of the COVID-19 pandemic in the Czech Republic. Correspondence analysis was used for better understanding and representation. This is a unique research study on Generation Z in the Czech Republic and Central Europe. As a result of the contemporary demographic changes in the world, this generation will shape future travel demand. Hence, understanding these youngest travelers will be key to predicting how tourism trends could evolve in the next few years and how these could influence worldwide tourism. The respondents thought they would not change their travel habits in the next five years because of the pandemic. When Periods 1 and 2 were compared after one year of the pandemic, the respondents preferred individual trips to group trips and individual accommodation to group accommodation facilities. On the other hand, our findings revealed a significant increase in safety concerns related to changes in travel behavior when the above-mentioned periods were compared. The research contributes to mapping young people’s attitudes towards travel in the constrained and changing conditions resulting from the COVID-19 pandemic. The findings help analyze the consumer behavior of the target group.