Seat Belt Research Articles

Management of traumatic duodenal rupture in children-case series.

Traumatic duodenal rupture is rare which accounts for only 2-10% of all Blunt abdominal trauma. The purpose of this study was to investigate the experience of diagnosis and treatment of traumatic duodenal rupture in children. This was a retrospective case series study. Clinical data were collected from three children suffering from a traumatic duodenal rupture who received surgical treatment in our hospital from January 2013 to January 2023. Demographic characteristics, trauma mechanism, physical examination, auxiliary examination, operation timing and plan, postoperative management and follow-up of included patients were described. Summarize the importance of early diagnosis and treatment of this type of injury. Three children (1 male and 2 females) with duodenal rupture due to traumatic abdominal injury were included in the study, with average age of 8.2 years (range 2.75-13.25 years). Among them, One child was injured by heavy objects. The other two children had lumbar fracture and seat belt sign. All three patients underwent emergency operation within 24h, and recovered well after surgery. No related complications seen during follow-up. Duodenal rupture is a rare but fatal disease. Early identification and active abdominal exploration can reduce the incidence of related complications and mortality in children with blunt abdominal injury, especially those with seat belt sign. Simultaneously, the standardized postoperative management is significant for the cure of children.

A framework to Prediction occupant injuries in rotated seating arrangements

This paper describes an innovative computational framework that can address the passive safety of occupants and the prediction of injuries for a wide range of rotated seat arrangements in future autonomous vehicles. An Active Human Model (AHM) wearing a 3-point seat belt with kinematics previously validated using test data was positioned in the rotated seats and simulations were performed for a pre-crash braking phase followed by a frontal collision. The pre-crash braking pulse was parameterised for intensity and shape, both of which affect the collision speed. Computer routines were created to adjust the restraint system response to the impact speed, as well as the crash pulse pattern, based on a Honda Accord MY2011 Finite Element (FE) model. A Design of Experiments (DoE) study was created to explore 400 possible scenarios, and 12 standard injury responses were extracted and converted into AIS2 + and AIS3 + risk values. A Reduced Order Model (ROM), based on the Proper Orthogonal Decomposition (POD) technique, was trained using the 400 scenarios and used to find the seating positions that resulted in AIS2 + and AIS3 + values higher than the base values obtained with the Honda Accord MY2011 FE model. The paper concludes that this new framework is capable of carry out fast computations of dangerous seating positions and the occupant’s kinematics in seconds. The novel framework provides vehicle designers and vehicle safety teams with the capability to identify potentially dangerous positions for the rotated seating arrangements that are envisaged to feature in the cabins of future autonomous vehicles.

Response of safety belt webbing used for formula student race car in a frontal collision

A particularly important element for ensuring the passive safety of a vehicle is the seat belt. In automotive engineering, the study of this subassembly is given special attention, because it plays a key role among the multiple safety systems, active and passive, that currently equip a vehicle. The paper studies several ways in which belt webbing can be damaged during use and how these defects can influence the behavior of the webbing. For this purpose, using the Finite Element Method (FEM) based on a mechanical model that considers the vehicle-driver-seat belt assembly, the forces that appear in the seat belt in the event of a frontal collision are determined. Experimental determinations carried out in the laboratory by the authors provide the mechanical properties modified following the failures. By introducing these mechanical properties into the developed model, it will be determined how the safety belt webbing responds in the event of a collision with a wall. A comparison is made between the behavior of the “new state” belt and one with defects in order to estimate the damage that can be caused by the appearance of the defects considered in the work.

Simulating Pelvis Kinematics from Belt and Seat Loading in Frontal Car Crash Scenarios: Important Boundary Conditions that Influence the Outcome.

The risk of submarining during automotive crashes, defined by the lap belt sliding off the pelvis to load the abdomen, is predicted to increase in future autonomous vehicles as greater variation in seating position is enabled. Biofidelic tools are required to efficiently design and evaluate new and/or improved safety systems. This study aims to evaluate the pelvis response sensitivity to variations in boundary conditions that directly influence the pelvis loads, deemed important for the submarining outcome, to facilitate a more precise comparison between finite element human body models (FE-HBMs) and post-mortem human subjects (PMHSs). A parameter study, using a one-variable-at-a-time analysis (low/high) of belt friction, seat friction, seat stiffness, and (on/off) for added belt bending stiffness, was performed using a state-of-the-art FE-HBM in four different test scenarios; one stationary, two sleds with upright occupant posture, and one sled with reclined occupant posture. In the stationary scenario, both belt friction and belt bending stiffness influenced the belt folding behavior, which consequently affected the belt-to-pelvis angle at submarining. In the sled scenarios, only seat friction was found to influence the pelvis kinematics and submarining outcome, with the most biofidelic response resulting from both the low (0.2) and high (0.5) friction coefficient depending on the scenario. To reduce uncertainty in boundary conditions affecting the external pelvis loads and increase confidence in FE-HBM to PMHS comparisons, it is recommended that future experiments evaluate the PMHS to seat friction coefficient and that new belt modeling methods that accurately capture belt folding when interacting with soft tissues are developed.

Analysis of traffic injury trends, and strategies for road safety promotion in Lithuania

Abstract Every year, about 1.3 million people die on the world’s roads. The aim of the study was to analyze the mortality trends from traffic injuries, and to discuss strategies for the prevention of road traffic injuries and road safety promotion in Lithuania. A longitudinal study was conducted, and regression analysis was applied. The study showed that, when analyzing the changes in mortality from the main causes of death over 2009-2019, the greatest progress in mortality reduction was observed in the category of deaths from external causes; whereas, the number of deaths from diseases of the circulatory system did not change, and the number of deaths from malignant tumors increased slightly. In Lithuania, the death rate from traffic injuries per 100,000 inhabitants decreased significantly over a 50-year period (1971-2020) (in the whole population, and in the subgroups of men and women). In Lithuania, during the fifty-year period (1971-2020), pedestrian mortality rates decreased significantly in the whole population, and children and adolescents (0-14, 15-19, and 0-19 years). Over 1998-2020, road traffic injury deaths decreased significantly in children age groups 0-14, 15-19, and 0-19. After exploring the preventive strategies used for road safety promotion, it was revealed that the most effective results were achieved, when education, safe environment creation, and legislation with enforcement were used. It was important to create a safe engineering environment, to separate pedestrian and bicycle paths from high-speed traffic on roads, to improve the visibility of road users, to apply measures that reduce driver’s fatigue, and to combat the usage of mobile phones while driving. Preventive activities were aimed at alcohol control, speed limitation, education of safe behavior of drivers, promotion of safe cars operation. The usage of safety belts and safety seats, helmets for motorcyclists and cyclists were increased through legislative and educational measures.

Novel Methodology to Detect Non-Compliant Usage of Seat Belt in a Passenger Car

Novel Methodology to Detect Non-Compliant Usage of Seat Belt in a Passenger Car

Driving License Management System Using Finger Print Sensors with Seat Belt Monitoring System

The finger print based driving license management is an advanced technology that is designed for security purposes. This system consists of a fingerprint sensor, which is used to identify the status of the driver, whether he/she obtained a license or not. This is a very highly secured system. The driver's fingerprint is already stored in the system for comparison purposes. Nowadays, accidents are increasing day by day. In the recent days minor people are driving the vehicles without the license; this may cause future accidents. In order to conquer this, we proposed this system. This system not only checks the license status, and here a further IR sensor is used to check whether the seat belt wore or not. By using this system, there are tremendous advantages, like accidents will be reduced, high security, and reduced vehicle theft. Keywords: Finger print sensor, microcontroller, and IR sensor.

Improved YOLOv7 Electric Work Safety Belt Hook Suspension State Recognition Algorithm Based on Decoupled Head

Safety is the eternal theme of power systems. In view of problems such as time-consuming and poor real-time performance in the correct use of seat belt hooks by manual supervision operators in the process of power operation, this paper proposes an improved YOLOv7 seat belt hook suspension state recognition algorithm. Firstly, the feature extraction part of the YOLOv7 backbone network is improved, and the M-Spatial Pyramid Pooling Concurrent Spatial Pyramid Convolution (M-SPPCSPC) feature extraction module is constructed to replace the Spatial Pyramid Pooling Concurrent Spatial Pyramid Convolution (SPPCSPC) module of the backbone network, which reduces the amount of computation and improves the detection speed of the backbone network while keeping the sensory field of the backbone network unchanged. Second, a decoupled head, which realizes the confidence and regression frames separately, is introduced to alleviate the negative impact of the conflict between the classification and regression tasks, consequently improving the network detection accuracy and accelerating the network convergence. Ultimately, a dynamic non-monotonic focusing mechanism is introduced in the output layer, and the Wise Intersection over Union (WioU) loss function is used to reduce the competitiveness of high-quality anchor frames while reducing the harmful gradient generated by low-quality anchor frames, which ultimately improves the overall performance of the detection network. The experimental results show that the mean Average Precision (mAP@0.5) value of the improved network reaches 81.2%, which is 7.4% higher than that of the original YOLOv7, therefore achieving better detection results for multiple-state recognition of hooks.

Effect Analysis of Different Use Ways of a Q10 Child Seat

In this paper, the injury situation of Q10 child dummy was optimized and analyzed by analyzing the impact of different ways of using a certain child seat ,and analyzing the crash test data of a real car based on LS-DYNA crash simulation analysis software after the vehicle benchmarking, by elaborating on the protection of child occupants in different ways of using this type of child seat, so as to provide a reference for the development of child restraint system of new cars. The results show that: Regardless of whether this type of child seat has an optional seat back, adding seat belt Secure Guard and not using ISOFIX fixing, the dummies' injuries show a decreasing trend. This study provides reference for the selection and use of this type of child seat in dynamic test.

Study of Pattern of Craniofacial Injuries in Road Traffic Accident Cases Autopsied in Midnapore Medical College

Background: The objective of this study was to investigate the pattern of craniofacial injuries in victims of fatal road traffic accidents, observed through autopsies conducted at Midnapore Medical College, West Midnapore from January 2021 to December 2023. Methods: It is a retrospective, cross- sectional observational study. Data was collected by thorough analysis of the injuries documented in post-mortem reports of all the alleged road traffic accident cases where victim sustained Cranio- facial injuries within a time span of 3 years, from 1st January 2021 to 31st December, 2023. Data was analysed using Microsoft Excel. Conclusion: The study highlights the necessity of context-specific interventions to address the unique injury patterns observed in West Midnapore's road traffic accidents. Improving road infrastructure, raising traffic safety awareness, and promoting protective measures like seat belts and helmets can reduce severe craniofacial injuries. The prevalence of maxillofacial fractures underscores the face's vulnerability, with long-term physical and psychological impacts. Effective prevention strategies, such as strict traffic regulations and awareness campaigns on the dangers of distracted or impaired driving, are essential. Despite limitations, the study provides valuable insights into craniofacial injury patterns in fatal accidents, stressing the need for enhanced road safety, stronger traffic laws, and better post-accident care. Interdisciplinary collaboration among healthcare professionals, law enforcement, and policymakers is crucial for developing comprehensive strategies to manage and prevent these injuries. By examining regional injury characteristics and comparing them with other studies, this research contributes to the broader understanding of craniofacial trauma, offering significant implications for improving road safety, trauma care, and forensic practices.

Predicting risky driving behaviours using the theory of planned behaviour: A meta-analysis

The current meta-analysis explored the efficacy of the theory of planned behaviour (TPB) in predicting high-risk driving behaviours. Specifically, we examined speeding (in relation to exceeding the limit as well as speed compliance), driving under the influence, distracted driving, and seat belt use. We searched four electronic databases (i.e., PubMed, Web of Science, Scopus, and ProQuest) and included original studies that quantitatively measured the relationships between the TPB variables (attitude, subjective norm, perceived behavioural control [PBC], intention, and prospective/objective behaviour). The study identified 80 records with 94 independent samples. Studies were assessed for risk of bias using the JBI checklist for cross-sectional studies and compliance with the TPB guidelines. Together, attitude, subjective norm and PBC explained between 30 % and 51 % of variance found in intention, with attitude showing as the strongest predictor for intention across the different driving behaviours. The findings also showed that the model explained 36 %–48 % variance found in predicting the observed and/or prospective behaviours for distracted driving, speed compliance and speeding. Understanding the varying strengths and thus relative importance of TPB constructs in predicting different risky driving behaviours is crucial for developing targeted road safety interventions.

Yasri Miftah Joenoes

Background: Mining accidents in truck transportation activities are the most common accidents in the mining industry in Southeast Sulawesi Province in the last 3 years and often cause fatalities. Previous studies have not identified all types of dominant causes of mining accidents in truck transportation activities, be it direct causes, basic causes, or lack of management control. The purpose of this study is to analyze the causes of mining accidents in truck transportation activities in the Southeast Sulawesi Region in 2021-2023. Method: The research used is qualitative phenomenology to understand and describe the dominant accident-causing factors from mining accident phenomena in transportation activities using trucks. Results: The dominant causes of mining accidents in truck transportation activities in Southeast Sulawesi Province in 2021-2023 were: driving above the speed limit; drivers not wearing safety belts and helmets; downhill road conditions with a grade above 12% and long; drivers lack knowledge/skills; lack of supervision; and inadequate SOP and HIRA. Conclusion: Corrective actions that can be taken to minimize the occurrence of mining accidents in truck transportation activities are: increasing supervision and socialization related to speed limits, as well as the use of safety belts and helmets; striving for engineering, maximizing supervision and completing road signs on downhill road segments with grades above 12% and long; implementing new worker training and annual refresher courses with output in the form of SIMPER which is valid for a maximum of 1 year; meeting the needs/ratio of operational supervisors, and ensuring that SOP and IBPR are adequate for truck transportation activities.

Vienna road crashes: a multivariate approach to understanding driver-related risks

Road safety is worldwide researched field where crashes play a causal role and injuries are counted as outcomes. Approaches and techniques are diverse, but with same goal—contribute to safer road environment for everyone included. Drivers of personal vehicles are the most protected traffic group due to protection provided by vehicle and mandatory safety belt in comparison to pedestrians as the most venerable participants. Also, this group of drivers is characterized by the high presence of very young drivers whose psychological characteristics place them in a vulnerable risky subgroup. According to the original data of the traffic police on crashes of personal car drivers in the town of Vienna, since 2010 they have had the highest number of crashes in 2012 and after slow decrease is recorded. Still high in total number of crashes involving only drivers of personal vehicles from a traffic safety point of view this still represents an extremely worrying problem that has not received proper social attention. In response to knowledge gaps, this research is essential to address leading characterizations in crashes with aim to answer what is trend in crash occurrence during 2010–2020 inside Vienna municipality, and what is predicted trend. Is there significant and distinctive difference based on gender and age with conditions under which crashes are occurring influencing different injury degree. Multiple regression undoubtedly points fields for action in statistically based findings providing the most important answer to this research: why there are so many injuries and what is leading cause of them. Answering this question contributes toward higher safety environment for all participants.

Study of the effects of different mechanical mishaps or Traumatic Brain Injury(TBI) on brain region: A Review

The following concerns and measures of neurotrauma are discussed here: It expands more on the protection role that the skull encompasses regarding the encephalon together with a detailed explanation of the effects of head injuries and their implications, which may include coma or death as a result of fractures or dysfunctions. The text gives descriptions of the incidence, especially in car-related accidents, and details about TBI such as the symptoms and the issues likely to occur as a result of the injury. The paper also draws attention to certain dangerous behaviors; such as; non-utilization of seat belts, driving when drunk, no helmet usage, and inadequate supervision to eliminate traumatic brain injury. Among the changes in management of the TBIs whether surgical or through medication, the text lastly highlights the fact that more emphasis has been placed on preventing this condition than on finding a cure for it.

Effects of seatback angles on passenger kinematics among the longitudinal braking scenario

With the development of autonomous vehicles and zero gravity seats, the passengers are more likely to sit in their preferred postures, such as the high reclined positions. This study aims to analyse the passenger kinematics under different seatback angles by volunteer experiments, which is beneficial for future smart restraint system development. For this study, four volunteers were selected to participate in the longitudinal braking experiments from 80 km/h to 0 km/h, and each volunteer repeated 3 times. Among the tests, three seatback angles (25°, 45°, and 60° from the vertical) were introduced, while the seat pan angles were the same. The seatbelt forces, as well as the volunteers’ motions were recorded among the experiments. The experimental results indicated that both head displacement and the first thoracic vertebrae (T1) displacement increased gradually with the increase of the seatback angle. The average T1 displacements for four volunteers under 25° seatback angle were between 180.2 mm to 245.5 mm, while the T1 displacements for 45° seatback angle and 60° seatback angle were between 291.4 mm to 374.3 and 366.2 mm to 444.5 mm respectively. Both shoulder belt force and lap belt force increased with the increase of seatback angle, except for the 60° case of No.1 volunteer, which might due to the muscle activation level difference. In this study, there was no significant correlation between the seatback inclination angle and the amount of seat belt outlet amount. The study is beneficial for active human model validation and future smart restraint system development.

Head and Neck Airbag Penetrating Injuries.

Airbags have significantly decreased fatalities in frontal vehicle accidents, but their deployment can lead to more severe injuries and rarely death. The authors present a case of a penetrating injury causing tissue loss in the left cheek, an "explosion" of the zygomatic arch, and facial nerve damage, discussing the management in the contest of literature examining similar injuries in the head and neck region. Reviewing English literature from 1995 to 2023, 9 patients experienced severe airbag-related penetrating head and neck injuries, in 3 cases resulting in death. In addition, we describe the case of a young male reporting a deep cheek laceration with facial nerve damage, tissue loss, and comminuted maxilla-zygomatic fracture; 48 hours after trauma, he underwent surgical reconstruction using a bilobed flap, direct suture of the resected masseter muscle, closed reduction of the comminuted zygomatic arch fracture, and direct neurorrhaphy of the lacerated facial nerve. Five months after surgery, facial nerve function recovery was observed. Mouth opening was restored, but a mixed low-medium hearing loss persisted for high frequencies. In another case marginal nerve damage was reported, but management is not described. The use of seat belts and airbags has led to a significant reduction in the incidence of facial fractures and fatalities after motor vehicle accidents, but at the same time, in some cases, complex facial trauma and/or penetrating injury can be observed. In case of suspected or certain facial nerve damage, it is mandatory to perform exploration and eventual reconstruction within 72 hours.

Design of Municipal Transport Vehicles in Bali Province

Urban transport involves the movement of people and goods from one place to another using public vehicles, which can be either motorised or non-motorised. The presence of urban transport is crucial for supporting community mobility and can reduce the reliance on private vehicles. Ideally, urban transport should ensure both safety and comfort for drivers and passengers. However, in reality, safety and comfort are often inadequate. Issues such as overcrowded seating due to non-compliant designs, awkward entry and exit points that pose risks to passengers, lack of dedicated seating for disabled individuals, and absence of seat belts on all seats contribute to the problem. Moreover, many accidents involving urban transport are caused by the poor condition of the vehicles. Given these issues, this study is titled "Design of Urban Transport Vehicles in Bali Province." The research aims to analyse the current problems faced by urban transport systems. The goal is to develop a vehicle design that can restore the image of public transportation in Indonesia, particularly for urban transport or public minibus (angkot), and enhance safety, especially in Bali Province.

Analysis of Head Movement in KPSIT Dummies and the Impact of Seats and Seat Belts during Low-Speed Collisions 20 km/h.

The aim of this study was to compare the head displacement of the KPSIT C50 dummy, representing a 50th percentile male, with the KPSIT C5 dummy, representing a 5th percentile female, during low-speed collisions. Low-speed collisions, such as those occurring in urban traffic jams, are increasingly common. The research was conducted on a dedicated educational workstation designed to measure forces in seat belts. This study is part of a comprehensive research project on crash tests involving both volunteers and physical KPSIT dummies. The tests were conducted at a speed of 20 km/h to simulate real-world low-speed collision scenarios. The findings demonstrate that using a sports bucket seat with four-point or five-point harnesses significantly reduces head displacement compared with standard car seats. Such seating configurations enhance safety by minimizing the risk of head injuries, which can occur when airbags do not deploy during low-speed collisions. Moreover, the study highlights that standard three-point seat belts allow for greater forward head movement, increasing the risk of head contact with the vehicle's interior during collisions at speeds too low to trigger airbag deployment.

Study of the forces in the pretensioned seat belt and their effects on the human body

Abstract The paper aims to analyze the potential injuries induced by the seat belt in case of triggering the pretensioning mechanism. Two mannequins, with different geometries, have been installed on the front seat of the vehicle and were subjected to the efforts generated by the pretensioning of the seat belt, in the absence of an impact of the vehicle. The force due to the impact has been analyzed in various bibliographic resources, in the proposed model it can be taken into account. Efforts were measured in the belt strap for adult passenger and adult pregnant female passenger, or adult passenger with high BMI body mass index. The efforts that act on the human body, with emphasis on the abdominal loop, have been determined. It has been found that stress on the abdomen can cause internal damage, even just by simply triggering the pretensioning system, without taking into account the force on the body due to the impact.

Evaluation of the effectiveness of road safety measures and their impact on the pattern and distribution of extracranial and intracranial hemorrhages in fatal head injury cases in Uttar Pradesh, India

Introduction: In Uttar Pradesh, India, there are many fatal head injuries as a result of road traffic accidents (RTAs). Studying the pattern and distribution of intracranial hemorrhages, a frequent complication of severe head trauma might provide vital information on the efficacy of traffic safety regulations. To improve road safety tactics and lower fatal head injuries in Uttar Pradesh, this study intends to assess the effect of road safety measures on the frequency and distribution of intracranial hemorrhages in fatal head injury patients. Aim: This study’s objective is to assess the influence of current road safety initiatives on intracranial bleeding distribution and patterns in fatal head injury cases in Uttar Pradesh. Methodology: The 604 RTA cases with head injuries that were brought to the mortuary of the S.R.N. Hospital in Prayagraj for a medical-legal postmortem assessment over the course of a year, from April 2021 to March 2022, make up the entirety of this prospective study. Following receiving institutional ethical approval and informed consent, structured interviews with attendees utilizing a questionnaire were done to gather the data. Result: The results show that certain traffic safety measures have reduced the frequency of fatal head injuries in RTAs. A decreased incidence of intracranial hemorrhages was linked to improved traffic infrastructure, including well-planned junctions, pedestrian crossings, and distinct bicycle lanes. Similar results were shown in serious head injuries when traffic restrictions including speed limits, seat belt use, and helmet legislation were strictly enforced. Conclusion: There are still issues with fatal brain injuries from car accidents, despite some encouraging results. Safety legislation violations, a lack of public knowledge, and inadequate enforcement all contribute to the issue. Disadvantaged groups like walkers and users on two-wheelers continue to be especially susceptible. The results of this investigation offer important new understandings of the efficiency of traffic safety measures and their influence on the distribution and pattern of cerebral hemorrhages in Uttar Pradesh, India. The results point to the necessity of improved public education efforts and traffic safety laws. More research and focused interventions are required to address specific risk factors among various road user groups. This will result in a safer driving environment and a decline in catastrophic brain injuries.