scholarly journals Evaluation of Section Speed Enforcement System Using Empirical Bayes Approach and Turning Point Analysis

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Jisup Shim ◽  
Oh Hoon Kwon ◽  
Shin Hyoung Park ◽  
Sungbong Chung ◽  
Kitae Jang
Keyword(s):  
Empirical Bayes ◽  
Turning Point ◽  
Safety Data ◽  
Travel Speed ◽  
Crash Risk ◽  
Vehicle Speed ◽  
Traffic Crash ◽  
Point Analysis ◽  
Before And After ◽  
Speed Enforcement

Speeding is a major risk factor for traffic-related injuries. As a countermeasure against speeding, automated speed enforcement systems (ASES) have been deployed in many countries. However, drivers’ awareness of enforcement locations allows themselves to adjust vehicle speeds in the vicinity of the enforcement locations. This enforcement avoidance behavior leads to a criticism of the effectiveness of ASES, in which the system promotes abrupt changes in vehicle speed near enforcement locations, increasing crash risk as a side effect. To address this issue, the section speed enforcement system (SSES), which enforces overspeeding vehicles by their average travel speed over a section, has been devised. In this study, we evaluate traffic speed and safety data that were collected from sections with SSES on Korean expressways. The speed analysis showed that the vehicles reduced their speeds inside the enforcement section, and this reduction in speed variations across vehicles was also noticeable, signifying that the risk of traffic crash should be lower. In view of this, we have performed before and after comparative analysis using the empirical Bayes method with the comparison group. The outcomes estimate 43% reduction in crash occurrence after installation of SSES. Furthermore, turning point analysis confirmed that the reduction in crash occurrence ensued immediately after installation of SSES.

scholarly journals Shared Space and Pedestrian Safety: Empirical Evidence from Pedestrian Priority Street Projects in Seoul, Korea

2019 ◽  
Vol 11 (17) ◽  
pp. 4645 ◽  
Author(s):  
Lee ◽  
Kim
Keyword(s):  
Safety Data ◽  
Pedestrian Safety ◽  
City Government ◽  
Vehicle Speed ◽  
Design Strategies ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Shared Space ◽  
Before And After ◽  
Change In Mean

To provide safe and comfortable walking environments on narrow streets without sidewalks, the Seoul city government has implemented the Pedestrian Priority Street (PPS) projects. Based on Monderman’s “shared space” concept, the PPS involves applying diverse paving design techniques, particularly stamped asphalt pavement of various colors and patterns. This study investigated the effectiveness of the PPS for pedestrian safety. Data sources were; (1) video recordings of the nine concurrent PPS in 2014 before and after the projects were completed; and (2) a cross-sectional survey at the nine streets. Two groups of multiple regression models analyzed the objective safety, by using the variables, mean vehicle speed and change in mean speed, which were then compared with subjective safety through a questionnaire analysis. The results found that the design strategies reduced the vehicle speed and increased perceptions of pedestrian safety. These suggest that the PPS principles are practical and feasible ways to tackle the safety problems of narrow streets without sidewalks. Further, vehicle speeds increased on streets where the pedestrian zone was clearly distinguishable from the vehicular zone, by applying PPS techniques only at the roadside. Thus, clearly separating pedestrians from vehicular zones, which is neither the original principle, nor the intent of the PPS, should be avoided.

ENSURING THE PEDESTRIAN’S SAFETY DESIGN OF URBAN STREET CROSSWALKS

2019 ◽  
pp. 103-110
Author(s):  
Dmitriy Nemchinov
Keyword(s):  
Traffic Flow ◽  
Minimum Distance ◽  
Travel Speed ◽  
Vehicle Speed ◽  
Urban Street ◽  
Safety Design ◽  
Positive Practices ◽  
Time Required ◽  
Pedestrian Crossing ◽  
The City

The article presents an analysis of positive practices for ensuring the safety of pedestrians at the inter-section of the city streets carriageway, as well as a description of some innovations of regulatory and tech-nical documents, including an increased number of cases when a safety island can be arranged at a pedestri-an crossing. requirements for providing visibility at a pedestrian crossing to determine the minimum distance of visibility at a pedestrian crossing based on the time required pedestrians for crossing the roadway, recommended options for using ground unregulated pedestrian crossings on trapezoidal artificial irregularities according to GOST R 52605; traffic flow) and Z-shaped (also in the direction of the traffic flow), the requirements for the size of the securi-ty island have been established to allow put bicycle inside of safety island, a recommended set of measures to reduce the vehicle speed and describes the types of activities and describes a method of their application, describes methods zones device with reduced travel speed - residential and school zones, set requirements for turboroundabouts and methods of their design.

scholarly journals “Miracle” or “Medicine”: A Turning-Point Analysis of Patients' and Physicians' Shifting Views on Acupuncture

2020 ◽  
Vol 32 (5) ◽  
pp. 263-271
Author(s):  
Greenberry Taylor III ◽  
Yewande O. Addie ◽  
Jason Burchett ◽  
Christopher Durkin ◽  
Paul Crawford ◽  
...  
Keyword(s):  
Turning Point ◽  
Point Analysis

scholarly journals Different Patterns of Mental Health Outcomes among Road Traffic Crash Survivors: A Prospective Cohort Study

2021 ◽  
Vol 18 (4) ◽  
pp. 1564
Author(s):  
Jelena Kovacevic ◽  
Ivica Fotez ◽  
Ivan Miskulin ◽  
Davor Lesic ◽  
Maja Miskulin ◽  
...  
Keyword(s):  
Posttraumatic Stress Disorder ◽  
Mental Disorders ◽  
Posttraumatic Stress ◽  
Stress Disorder ◽  
Road Traffic ◽  
Sociodemographic Factors ◽  
Road Traffic Crash ◽  
Traffic Crash ◽  
Factors Associated ◽  
Before And After

This study aimed to investigate factors associated with the symptoms of mental disorders following a road traffic crash (RTC). A prospective cohort of 200 people was followed for 6 months after experiencing an RTC. The cohort was comprised of uninjured survivors and injured victims with all levels of road traffic injury (RTI) severity. Multivariable logistic regression analyses were performed to evaluate the associations between the symptoms of depression, posttraumatic stress disorder and anxiety one and six months after the RTC, along with sociodemographic factors, health status before and after the RTC, factors related to the RTI and factors related to the RTC. The results showed associations of depression, anxiety, and posttraumatic stress disorder symptoms with sociodemographic factors, factors related to the health status before and after the RTC and factors related to the RTC. Factors related to the RTI showed associations only with depression and posttraumatic stress disorder symptoms. Identifying factors associated with mental disorders following an RTC is essential for establishing screening of vulnerable individuals at risk of poor mental health outcomes after an RTC. All RTC survivors, regardless of their RTI status, should be screened for factors associated with mental disorders in order to successfully prevent them.

Kraft Foods' 2009 Conflict in Argentina: Turning-Point Analysis of a Labor-Management Negotiation

2013 ◽  
Vol 6 (3) ◽  
pp. 214-237 ◽  
Author(s):  
A. Ariel Llorente ◽  
Roberto Luchi ◽  
Alejandro Sioli
Keyword(s):  
Turning Point ◽  
Labor Management ◽  
Point Analysis

scholarly journals Comparison of efficacy and safety profiles of epidural analgesia and opioid analgesia in Chinese patients with thoracic trauma: A preliminary report

2021 ◽  
Vol 19 (12) ◽  
pp. 2683-2689
Author(s):  
Xiaoping Yang ◽  
Danjie Zhang ◽  
Deling Kong ◽  
Jin Zhang ◽  
Bingwen Dang
Keyword(s):  
Epidural Analgesia ◽  
Thoracic Trauma ◽  
Rating Scale ◽  
Safety Data ◽  
Chinese Patients ◽  
Opioid Analgesia ◽  
Efficacy And Safety ◽  
Chi Square ◽  
Before And After ◽  
The Difference

Purpose: To compare the efficacy and safety profiles of epidural analgesia (EA) and opioid analgesia (OA) in Chinese patients with thoracic trauma (TT). Methods: Patients with confirmed diagnosis of thoracic trauma were given either EA (via a catheter) or slow-release OA. The following efficacy variables were assessed in the two treatment groups: pain score, and changes in cytokine and catecholamine levels from baseline after treatment. Moreover, respiratory parameters were determined before and after treatment. The safety associated with each anesthesia was also evaluated. Quantitative data were analyzed either with Student’s t-test or MannWhitney test, while  categorical data were analyzed using Fisher exact or Chi-square test, based on data size. Results: A total of 200 patients completed the study (100 patients in each group). Pain, as assessed by verbal rating scale (VRS), was slightly lower in patients after treatment with EA, when compared to the patients treated with OA. However, the difference was not statistically significant (p < 0.05). Maximum inspiratory force (cmH2O) and tidal volume (liters) were slightly improved in patients  treated with EA, when compared to OA-treated patients, although the difference was not statistically significant (p < 0.05). Moreover,  the two treatments produced comparable levels of cytokines and catecholamines. Conclusion: The efficacy and safety data for EA and OA in Chinese non-obese patients with TT indicate numerically favorable outcome for EA, when compared to OA. Keywords: Epidural analgesia, Opioid analgesia, Chinese patients, Thoracic trauma

Muslim Trade and City Growth Before the Nineteenth Century: Comparative Urbanization in Europe, the Middle East and Central Asia

2019 ◽  
pp. 1-24 ◽  
Author(s):  
Lisa Blaydes ◽  
Christopher Paik
Keyword(s):  
Middle East ◽  
New World ◽  
Turning Point ◽  
Industrial Revolution ◽  
Middle Eastern ◽  
Trade Routes ◽  
Central Asian ◽  
Before And After ◽  
Run Up ◽  
Alternative Routes

AbstractScholars have long sought to understand when and why the Middle East fell behind Europe in its economic development. This article explores the importance of historical Muslim trade in explaining urban growth and decline in the run-up to the Industrial Revolution. The authors examine Eurasian urbanization patterns as a function of distance to Middle Eastern trade routes before and after 1500 CE – the turning point in European breakthroughs in seafaring, trade and exploration. The results suggest that proximity to historical Muslim trade routes was positively associated with urbanization in 1200 but not in 1800. These findings speak to why Middle Eastern and Central Asian cities – which had long benefited from their central location between Europe and Asia – declined as Europeans found alternative routes to the East and opened trade opportunities in the New World.

Sign in / Sign up

Export Citation Format

Share Document