scholarly journals Understanding E-Scooter Incidents Patterns in Street Network Perspective: A Case Study of Travis County, Texas

2021 ◽  
Vol 13 (19) ◽  
pp. 10583
Author(s):  
Junfeng Jiao ◽  
Shunhua Bai ◽  
Seung Jun Choi
Keyword(s):  
Traffic Signals ◽  
The United States ◽  
Urban Environments ◽  
Alternative Form ◽  
Street Network ◽  
Traffic Incidents ◽  
Study Objective ◽  
Crash Data ◽  
Electric Scooter

Dockless electric scooter (E-scooters) services have emerged in the United States as an alternative form of micro transit in the past few years. With the increasing popularity of E-scooters, it is important for cities to manage their usage to create and maintain safe urban environments. However, E-scooter safety in U.S. urban environments remains unexplored due to the lack of traffic and crash data related to E-scooters. Our study objective is to better understand E-scooter crashes from a street network perspective. New parcel level street network data are obtained from Zillow and curated in Geographic Information System (GIS). We conducted local Moran’s I and independent Z-test to compare where and how the street network that involves E-scooter crash differs spatially with traffic incidents. The analysis results show that there is a spatial correlation between E-scooter crashes and traffic incidents. Nevertheless, E-scooter crashes do not fully replicate characteristics of traffic incidents. Compared to traffic incidents, E-scooter incidents tend to occur adjacent to traffic signals and on primary roads.

scholarly journals Safety Climate as an Indicator and Predictor of Safety Performance: A Case Study

2018 ◽  
Vol 6 (1) ◽  
pp. 1-9
Author(s):  
Brandon Baertschi ◽  
Sang D Choi ◽  
Kwangseog Ahn
Keyword(s):  
High Performance ◽  
Safety Climate ◽  
The United States ◽  
Worker Safety ◽  
Study Objective ◽  
High Performing ◽  
Employee Safety ◽  
Significant Difference ◽  
Safety Priority

This study compared and objectively gauged the safety climate in the manufacturing facilities (high safety performing vs. low safety performing) to identify the most impactful areas to focus to reduce or prevent workplace injuries. In order to accomplish the study objective, we employed the Nordic Safety Climate Questionnaire (NOSACQ-50) consisted of 50 items across seven dimensions. A total of 116 operations employees in the paper laminate manufacturing completed the survey. The two sites were both within the United States and had structured the same operations. The results of the comparisons showed that there was a significant difference in the total scores for the sites. The high performance site had significantly higher NOSACQ-50 scores than the underperforming site in all dimensions. The high performing site had the greater safety climate scores in the area of “management safety priority & ability”. The underperforming site recorded comparatively lower scores in the areas of “management safety empowerment”, “group safety priority”, and “worker safety commitment”. We provided the recommendations of three focus areas: commitment, involvement, and accountability. The outcomes from this study could be useful to apply resources and focus to the appropriate areas in order to make safety improvements. In turn, improving safety climate can have positive impacts on increasing employee safety while improving the viability of the organization.

Safety of Freeway Service Patrol Operations: Case Study of Florida Road Rangers

2018 ◽  
Vol 2672 (33) ◽  
pp. 31-41 ◽  
Author(s):  
Grady Carrick ◽  
Sivaramakrishnan Srinivasan ◽  
Khajonsak Jermprapai
Keyword(s):  
Drug Use ◽  
Incident Management ◽  
Work Zones ◽  
Traffic Crashes ◽  
Traffic Incidents ◽  
Traffic Crash ◽  
Crash Data ◽  
Time Period ◽  
Suitable Case

Safety service patrols are a proven strategy to mitigate the effects of traffic incidents through quick clearance, incident management, and assistance to other incident responders like police, fire, emergency medical services, and towing. As encountered by other responders, working on or near roadways presents unique hazards for safety service patrol vehicles and operators. Road Rangers are Florida’s branded safety service patrols and, as a mature program with over 100 beats, a suitable case study for safety. This research combined an analysis of Road Ranger traffic crash data for 3 years with a comprehensive safety survey of more than 200 operators to determine safety characteristics related to service patrols. Comparing 200 Road Ranger traffic crashes from 2014 through 2016 with all Florida freeway crashes for the same time period revealed that Road Ranger crashes are five times more likely to involve a parked vehicle, and involve two or more vehicles 95% of the time. Pedestrian involvement, nighttime, shoulder locations, and work zones have higher representation for Road Ranger crashes, but weather is not a factor. Alcohol is three times more likely, drug use five times more likely, and distraction slightly higher when Road Ranger vehicles are struck. A survey of 217 Road Ranger drivers revealed that they are keenly aware of important safety topics like high-visibility safety apparel, non-traffic side vehicle approaches, and the dangers of working where there is limited lateral buffer space. Drivers overwhelmingly believe that they have the training and equipment necessary to do their jobs safely.

scholarly journals Explorative Visualization for Traffic Safety using Adaptive Study Areas

2021 ◽  
pp. 036119812098106
Author(s):  
Anne S. Berres ◽  
Haowen Xu ◽  
Sarah A Tennille ◽  
Joseph Severino ◽  
Srinath Ravulaparthy ◽  
...  
Keyword(s):  
Traffic Safety ◽  
Traffic Accidents ◽  
Urban Environments ◽  
Traffic Incidents ◽  
Crash Data ◽  
Response Data ◽  
Data Source ◽  
Visualization Techniques ◽  
The City ◽  
Hamilton County

The pressing need to improve traffic safety has become a societal concern in many cities around the world. Many traffic accidents are not occurring as stand-alone events but as consequences of other road incidents and hazards. To capture the traffic safety indications from a holistic aspect, this paper presents a suite of visualization techniques to explore large traffic safety datasets collected from different sources using adaptive study areas which include the whole region (Hamilton County, Ohio, U.S.) as well as smaller sub-areas. In the present study, these data source include (1) Hamilton County’s 911 emergency response data, which includes traffic incidents as well as other types of incidents throughout the county, and (2) Tennessee crash data, which contains only vehicle crashes with more detail on the circumstances of each crash. Both abstract and spatial visualization techniques are used to derive a better understanding of traffic safety patterns for different traffic participants in various urban environments. In addition to the entire region of Hamilton County, safety is examined on the highways, in the downtown area, and in a shopping district east of the city center. It is possible to characterize incidents in the different areas, gain a better understanding of common incident patterns, and identify outliers in the data. Finally, a textured tile calendar is presented to compare spatiotemporal patterns.

Impact of One-Way Streets and Contraflow on Low-Stress Bicycle Network Connectivity

2021 ◽  
pp. 036119812110148
Author(s):  
Theja Putta ◽  
Peter G. Furth
Keyword(s):  
Network Connectivity ◽  
The United States ◽  
Round Trip ◽  
Street Network ◽  
Street Networks ◽  
Significant Barrier ◽  
Boston Study ◽  
Stress Cycling ◽  
Low Traffic

One-way restrictions on local streets, which tend to have low traffic stress, can create a significant barrier to low-stress cycling. Contraflow, a treatment that undoes one-way restrictions on bike travel, has the potential to improve low-stress connectivity. Although contraflow is applied routinely in the Netherlands and Belgium, it has been sparingly applied in the United States. We propose refined measures of connectivity and accessibility that account for one-way restrictions by requiring a low-stress round trip path between origins and destinations. Different methods of associating origin–destination demand from polygons with a street network were analyzed. These methods are particularly important where there are one-way restrictions and irregular street networks because of the assumptions they entail in relation to first- and last-segment travel. In a case study of Greater Boston, we found that with the current bike network, low-stress connectivity between homes and jobs would increase from 1.2% to 8.7% if one-way restrictions on local streets were eliminated. We also found that even with a dense mesh of low-stress main bike routes, connectivity would still be 16% lower without contraflow on local streets than with. These results suggest that creating a network of main bike routes is not always enough; it is also important to provide contraflow on local streets. The Boston study also found that providing contraflow on selected links representing only 3% of local one-way street mileage delivered 40% of the connectivity impact of universal contraflow. Based on this finding, a method is proposed for prioritizing streets for contraflow conversion.

scholarly journals Urban Noise Pollution Prevention — Tokyo Case Study

2020 ◽  
Vol 8 (2) ◽  
pp. 101-109
Author(s):  
Joanna Jabłońska
Keyword(s):  
Public Space ◽  
Pollution Prevention ◽  
Noise Pollution ◽  
The United States ◽  
Urban Environments ◽  
Outcome Analysis ◽  
Public And Private ◽  
Commercial Activities ◽  
Noise Limitation

AbstractNowadays most of the world’s metropolises, cities, and conglomerations are substantially contaminated by noise. Development of civilization based on the intensification of car, rail, and air traffic, an increase of building density and, consequently, green areas reduction has led to major problems. Highlighting this negative phenomenon was one of the main objectives of this article. The process of noise pollution reduction is hindered not only by the needs of population growth, but also in a number of selected cities of the United States, Europe or Asia — aggressive sounds together with light and visual communications — emitted into public space, become an important element of commercial activities and remain a permanent, and even desirable, element of community culture and entertainment. The outlined problems are referred to in the introduction and discussion parts of this manuscript. At the same time, there are a number of solutions, both those currently applied and those possible to be introduced into the space of cities, which allow reduction of noise in selected zones of public and private sectors. One of the examples in the discussed field of science and practice is Tokyo — a multi-million metropolis, in which residents can experience silence both in workplaces, on streets and at home, despite the extraordinary civilization development of this metropolitan structure. Outcome analysis of solutions, used in the example city, forms the second part of the discussion in the article. Nowadays, when cities of the world are polluted with unwanted sounds, this case study is valuable, allowing the formulation of a set of clear recommendations for noise limitation in urban spaces — which are presented in the conclusions of the article. It is also worth mentioning that the spread of smart and humanized solutions aimed at noise reduction is crucial in order to build user- and environment-friendly urban environments in the near future.

Gendered differences in emigration and mobility perspectives among European researchers working abroad

2014 ◽  
Vol 7 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Elisabeth Scheibelhofer
Keyword(s):  
United States ◽  
Qualitative Research ◽  
Qualitative Study ◽  
Social Relations ◽  
The United States ◽  
Research Strategy ◽  
The Future ◽  
Highly Skilled

This paper focuses on gendered mobilities of highly skilled researchers working abroad. It is based on an empirical qualitative study that explored the mobility aspirations of Austrian scientists who were working in the United States at the time they were interviewed. Supported by a case study, the paper demonstrates how a qualitative research strategy including graphic drawings sketched by the interviewed persons can help us gain a better understanding of the gendered importance of social relations for the future mobility aspirations of scientists working abroad.

‘A Routh O’ Auld Nick-Nackets’ – the antiquarian collection of John Rae

2015 ◽  
Vol 36-37 (1) ◽  
pp. 163-183
Author(s):  
Paul Taylor
Keyword(s):  
United States ◽  
Nineteenth Century ◽  
Social Context ◽  
Moral Education ◽  
The United States ◽  
Representative Case ◽  
National Museums ◽  
The Individual ◽  
The University

John Rae, a Scottish antiquarian collector and spirit merchant, played a highly prominent role in the local natural history societies and exhibitions of nineteenth-century Aberdeen. While he modestly described his collection of archaeological lithics and other artefacts, principally drawn from Aberdeenshire but including some items from as far afield as the United States, as a mere ‘routh o’ auld nick-nackets' (abundance of old knick-knacks), a contemporary singled it out as ‘the best known in private hands' (Daily Free Press 4/5/91). After Rae's death, Glasgow Museums, National Museums Scotland, the University of Aberdeen Museum and the Pitt Rivers Museum in Oxford, as well as numerous individual private collectors, purchased items from the collection. Making use of historical and archive materials to explore the individual biography of Rae and his collection, this article examines how Rae's collecting and other antiquarian activities represent and mirror wider developments in both the ‘amateur’ antiquarianism carried out by Rae and his fellow collectors for reasons of self-improvement and moral education, and the ‘professional’ antiquarianism of the museums which purchased his artefacts. Considered in its wider nineteenth-century context, this is a representative case study of the early development of archaeology in the wider intellectual, scientific and social context of the era.

Varied Responses to Human-Induced Seismicity in the City of Azle, Texas

2019 ◽  
Vol 3 (1) ◽  
pp. 1-8
Author(s):  
Sarmistha R. Majumdar
Keyword(s):  
State Government ◽  
Induced Seismicity ◽  
Oil And Gas ◽  
The United States ◽  
The State ◽  
Prior History ◽  
Small Community ◽  
Regulatory Policies ◽  
The Status

Fracking has helped to usher in an era of energy abundance in the United States. This advanced drilling procedure has helped the nation to attain the status of the largest producer of crude oil and natural gas in the world, but some of its negative externalities, such as human-induced seismicity, can no longer be ignored. The occurrence of earthquakes in communities located at proximity to disposal wells with no prior history of seismicity has shocked residents and have caused damages to properties. It has evoked individuals’ resentment against the practice of injection of fracking’s wastewater under pressure into underground disposal wells. Though the oil and gas companies have denied the existence of a link between such a practice and earthquakes and the local and state governments have delayed their responses to the unforeseen seismic events, the issue has gained in prominence among researchers, affected community residents, and the media. This case study has offered a glimpse into the varied responses of stakeholders to human-induced seismicity in a small city in the state of Texas. It is evident from this case study that although individuals’ complaints and protests from a small community may not be successful in bringing about statewide changes in regulatory policies on disposal of fracking’s wastewater, they can add to the public pressure on the state government to do something to address the problem in a state that supports fracking.

Shale Resources, Parks Conservation, and Contested Public Lands in North Dakota’s Theodore Roosevelt National Park: Is Fracking Booming?

2020 ◽  
Vol 4 (1) ◽  
pp. 1-13
Author(s):  
Miriam R. Aczel ◽  
Karen E. Makuch
Keyword(s):  
National Park ◽  
Oil And Gas ◽  
The United States ◽  
Federal Agencies ◽  
Cultural Significance ◽  
Theodore Roosevelt ◽  
Natural Beauty ◽  
Theodore Roosevelt National Park ◽  
Bakken Shale

This case study analyzes the potential impacts of weakening the National Park Service’s (NPS) “9B Regulations” enacted in 1978, which established a federal regulatory framework governing hydrocarbon rights and extraction to protect natural resources within the parks. We focus on potential risks to national parklands resulting from Executive Orders 13771—Reducing Regulation and Controlling Regulatory Costs [1]—and 13783—Promoting Energy Independence and Economic Growth [2]—and subsequent recent revisions and further deregulation. To establish context, we briefly overview the history of the United States NPS and other relevant federal agencies’ roles and responsibilities in protecting federal lands that have been set aside due to their value as areas of natural beauty or historical or cultural significance [3]. We present a case study of Theodore Roosevelt National Park (TRNP) situated within the Bakken Shale Formation—a lucrative region of oil and gas deposits—to examine potential impacts if areas of TRNP, particularly areas designated as “wilderness,” are opened to resource extraction, or if the development in other areas of the Bakken near or adjacent to the park’s boundaries expands [4]. We have chosen TRNP because of its biodiversity and rich environmental resources and location in the hydrocarbon-rich Bakken Shale. We discuss where federal agencies’ responsibility for the protection of these lands for future generations and their responsibility for oversight of mineral and petroleum resources development by private contractors have the potential for conflict.

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