• Transactions of the Korean Society of Automotive Engineers
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• v.20 no.5
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• pp.1-7
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• 2012

Automobile airbag deployment process has been studied with MADYMO software. Based on the FMVSS208 and USNCAP(United States New Car Assessment Program) regulations, four parameters were chosen for the design improvement with reference to the 5th percentile female passenger dummy: time to fire, vent hole size, tether length and tank test pressure of inflator. Sensitivity analyses based on orthogonal arrays show that enhanced protection of small females can be achieved with improved USNCAP rating within the boundary of FMVSS 208.

• Transactions of the Korean Society of Automotive Engineers
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• v.11 no.4
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• pp.79-85
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• 2003

The child restraint system is blown to be excellent to reduce child occupant injury in frontal collisions. The effects of the child restraint system are experimently investigated according to FMVSS 213. A sled simulator is utilized with varying restraint types such as 2point, 3point seat belts, forward-facing types and booster types of child restraint systems. The head and chest injuries for various cases are evaluated based on industrial standards. Also, the maximum displacements of the head and the knees are measured by film analysis. Using the results of the test, the effects of the child restraint system is discussed and reduction of child occupant injury is pursued.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.42 no.3
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• pp.417-425
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• 2022

Interest in micro cars is growing around the world, and policy support for micro cars has been increasing in Korea. It is important to meet minimum safety standards for the operation of micro cars on roads due to concerns around micro car safety and the limited driving range of micro cars. In this study, visibility experiments that included safety identification of micro cars were conducted to try and prevent a decrease in driver reaction time. Safety identification lights were installed to the rear of a micro car, and the visibility and discomfort of the vehicle were evaluated to determine whether the micro car was safe to drive on an expressway. As a result, the installation effect of Micro car which install safety identification lamp was found when joining the point at an acceleration lane of the grade separation intersection, and that light on/off could be effective when entering an expressway. If the micro car operation plan proposed in this study is applied, the safety of micro cars on expressways can be increased by improving the visibility of micro car.

• Journal of the Korean Institute of Gas
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• v.22 no.6
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• pp.59-64
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• 2018

As part of measures to reduce fine dust, the government is promoting a project to convert the fuel of Yard Tractors(YT, tractors operated at ports), from diesel to LNG (Liquefied Natural Gas). While a port having a small number of yard tractors, it is not proper to construct a stationary LNG fueling station and supply LNG to YT due to a problem of BOG (Boil off gas) generation. Therefore, it is necessary to make a regulation and a standard on mobile LNG YT refueling station installation and inspection as an alternative. In this study, we have investigated domestic and foreign mobile LNG refueling cases and refueling standards, including the USA and Europe. In addition, we have suggested the risk reduction method according to the cause after investigation of the cause of LNG accidents. And last, based on the proposed risk reduction measures, we have proposed an amendment to the Regulation of the Urban Gas Business Law in Korea. The proposed mobile LNG YT refueling amendment of the Regulation includes ; maintenance of the safety distance from the protection facility, installation of an interlock device to prevent refueling in places other than the authorized place, installation of the identification system through biometrics, separation of the tank lorry and tow vehicle before refueling, checking the wheel fixed status of tank lorry before refueling, construction of the impounding area, safety measures before, during and after refueling, etc. The safety standards proposed in this study could be used as a reference in establishing standards for mobile LNG vehicle refueling in the near future.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.1173-1174
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• 2011

원자력발전소에 사용되는 직류전원계통은 발전소 운전제어에 필요한 전원을 공급한다. 축전지는 교류전원 상실시 전원이 회복될 때까지 발전소의 계통상태를 감시할 수 있는 계측제어설비의 전원공급과 발전소의 안전정지 등에 대비한 비상전원을 공급하는 설비이다. 발전소 직류전원계통용 축전지에 대한 설계 및 유지보수에 사용되는 국내 외 기술기준과 축전지 용량 및 동작책무 그리고 안전등급 축전지가 공급하는 부하, 축전지의 점검 및 성능시험에 대해서 살펴보았다. 현재 전기자동차에 사용될 축전지와 신재생에너지의 출력변동 보상용 축전지에 대한 연구가 활발히 진행되고 있다. 향후 축전지의 연구개발로 축전지 형식이 납축전지에서 기타 다른 우수한 방식의 축전지로 변경하기 위해서는 사용될 축전지의 특성, 배터리관리시스템, 축전지에 대한 원자력발전소용 기술기준의 개발에 관한 연구들이 진행되어야 할 것이다.

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.14 no.3
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• pp.59-67
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• 2000

최근 경제성장과 더불어 자동차 보유대수는 '90년대부터 '98년까지 8년간 매년 15% 증가하여 3배에 달한 반면 도로는 총 연장이 매년 5.5% 증가하는데 그침으로써 급증하는 교통수요를 충족시키기에 크게 미흡하여 도로 환경이 열악한 실정으로 도로의 안전성 향상을 위한 종합적이고 체계적인 노력이 절실히 필요한 실정이다. 이에 따라 건설교통부에서는 쾌적하고 안전한 도로를 만들기 위한 노력의 일환으로 사고 많은 지점의 개선, 도로안전시설의 정비·확충 등 도로 교통의 안전성 향상을 위한 사업들을 지속적이고 체계적으로 추진하고 있으며, 금번에는 도로조명시설의 설치 및 관리에 관한 일반적 기술기준을 마련하게 되었습니다. 일선 실무자들이 이를 적극적으로 활용하여 도로 이용자들에게 보다 좋은 도로 환경을 제공함으로써 교통사고를 줄이고 원활한 교통 소통을 도모하는데 이바지할 수 있기를 바라며, 도로 조명시설에 관한 내용을 발췌하여 소개하고자 합니다.

• Journal of Auto-vehicle Safety Association
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• v.13 no.3
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• pp.47-53
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• 2021

This study is a study to estimate the VSL (Value of a Statistical Life) and CBA (Cost-benefit analysis) of the rollover safety standard for hydrogen buses, VSL is an economic value concept used to quantify the benefits of avoiding death. CBA shows the effect of cost-benefit, and if B/C is greater than 1, there is a social effect. In order to estimate the VSL and CBA, the hydrogen bus introduction scenario was assumed to be optimistic (20,000 vehicles in 2030), neutral (15,000 vehicles in 2030), and pessimistic (10,000 vehicles in 2030), and the effect of reducing human casualties was estimated. As a result, except for the pessimistic market situation of introducing hydrogen buses (10,000 vehicles in 2030) and the VSL reduction ratio of 10%, all policies were judged to have high cost-benefit effects. These results indicate that the introduction of the rollover safety standard for hydrogen buses is a socially effective policy.

• Fire Science and Engineering
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• v.30 no.2
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• pp.123-132
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• 2016

This study is the result of performing structural analysis in accordance with the new ambulance design of inside space using the new vehicle's bodywork. 3D design works were performed based on international standards and designed ambulance. And then it was tested by a shock of 10G to the ambulance car inside with respect to the vehicle body after that we looked into the consequences. At this time, it was carried out in consideration of its own weight and the weight of components according to the EN regulation. From the result of structural analysis, the internal frame and configured handrail in a variety of pipe did not have a relatively large stress load, but internal panel and cabinets has been interpreted to receive a large stress load at least over 50 MPa. When carried out reinforcement design in accordance with this analysis, the modification of thickness and shape could be necessary. On the basis of these findings, it is also expected that there could be a useful information to produce a more secure vehicle for paramedics and patients using a ambulance inside the vehicle.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.18 no.4
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• pp.31-43
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• 2019

Take-overs occur in autonomous vehicles at levels 3 and 4 based on SAE. For safe take-over, it is necessary to set the time required for diverse drivers to complete take-over in various road conditions. In this study, take-over time and stabilization characteristics were measured to secure safety of take-over in autonomous vehicle. To this end, a virtual driving simulator was used to set up situations similar to those on real expressways. Fifty drivers with various sexes and ages participated in the experiment where changes in traffic volume and geometry were applied to measure change in takeover time and stabilization characteristics according to various road conditions. Experimental results show that the average take-over time was 2.3 seconds and the standard deviation was 0.1 second. As a result of analysis of stabilization characteristics, there was no difference in take-over stabilization time due to the difference of traffic volume, and there was a significant difference by curvature changes.

• Convergence Security Journal
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• v.22 no.5
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• pp.49-59
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• 2022

Cyber security in the automobile sector is a key factor in the life cycle of automobiles, and cyber security evaluation standards are being strengthened worldwide. In addition, not only manufacturers who design and produce automobiles, but also due to the nature of automobiles consisting of complex components and various parts, the safety of cybersecurity can be secured only when the implementation level of the cybersecurity management system of companies participating in the entire supply chain is evaluated and managed. In this study, I analyzed the requirements of ISO/SAE 21434 and TISAX, which are representative standards for evaluating automotive cybersecurity. Through a survey conducted on domestic/overseas company security officers and related experts, suitability and feasibility were reviewed according to priorities and industries, so 6 areas and 45 evaluation criteria were derived and presented as final evaluation items. This study is meaningful as a study in that it presented a model that allows companies participating in the automotive supply chain to evaluate the current cybersecurity management level of the company by first applying ISO/SAE 21434 and TISAX overall control processes before uniformly introducing them.