• 자동차안전학회지
• /
• 제9권1호
• /
• pp.6-12
• /
• 2017

Regulation for the testing and operation of automated vehicles on public roadways has been recently developed all over the world. For example, the licensing standards and the evaluation technology for automated vehicles have been proposed in California, Nevada and EU. But specific safety evaluation scenarios for automated vehicles have not been proposed yet. This paper presents safety evaluation scenarios for extraordinary service permission of automated vehicles on highways. A total of seven scenarios are selected in consideration of safety priority and real traffic situation. Six scenarios are relevant with lane keeping and one scenario is relevant with lane change. All scenarios are developed based on existing ADAS evaluation scenarios and repeated simulation of automated vehicle algorithm. Safety evaluation factors as well as scenarios are developed. The safety factors are based on existing ADAS ISO requirements, ADAS safety factors and current traffic regulations. For the scenarios, a hunter vehicle is needed in addition to automated vehicle evaluated. The hunter vehicle performs multiple roles like preceding vehicle, cut-in vehicle and so on. The hunter vehicle is also automated vehicle equipped with high performance GPS, radar and Lidar. All the scenarios can be implemented by driving a lap on a KATRI ITS test track. These scenarios and safety evaluation factors are investigated via both a computer simulation and an experimental vehicle test on the test track. The experimental vehicle test was conducted with two automated vehicles, which are the evaluated vehicle and the hunter vehicle.

• 한국자동차공학회논문집
• /
• 제24권5호
• /
• pp.495-503
• /
• 2016

Regulation for the testing and operation of autonomous vehicles on public roadways has been recently developed all over the world. For example, the licensing standards and the evaluation technology for autonomous vehicles have been proposed in California, Nevada and EU. But specific safety evaluation scenarios for autonomous vehicles have not been proposed yet. This paper presents safety evaluation scenarios for extraordinary service permission of autonomous vehicles on highways. A total of five scenarios are selected in consideration of safety priority and real traffic situation. These scenarios are developed based on existing ADAS evaluation and simulation of autonomous vehicle algorithm. Also, Safety evaluation factors are developed based on ISO requirements, other papers and the current traffic regulations. These scenarios are investigated via computer simulation.

• 자동차안전학회지
• /
• 제9권4호
• /
• pp.7-13
• /
• 2017

As automotive industry develops, the demand for increasing traffic safety is growing. Lots of researches about vehicle convenience and safety technology have been implemented. Now, the autonomous driving test is being conducted all over the world, and the autonomous driving regulations are also being developed. Autonomous vehicles are being commercialized, but autonomous vehicle safety has not been guaranteed yet. This paper presents scenarios that assess the safety of autonomous vehicles by identifying the minimum requirements to ensure safety for a variety of situations on highway. In assessing driving safety, seven scenarios were totally selected. Seven scenarios were related to lane keeping and lane change performance in certain situations. These scenarios were verified by analyzing the driving data acquired through actual vehicle driving. Data analysis was implemented via computer simulation. These scenarios are developed based on existing ADAS evaluation and simulation of autonomous vehicle algorithm. Also Safety evaluation factors are developed based on ISO requirements, other papers and the current traffic regulations.

• 자동차안전학회지
• /
• 제9권3호
• /
• pp.46-52
• /
• 2017

In this study, safety evaluation scenarios on "cut-in" situation are presented to assess the performance of automatic emergency braking systems. The ASSESS project in EU is surveyed for derive efficient test scenarios for cut-in situation. The TASS database are also analyzed to find representative accident scenarios in Korea. With the results of the ASSESS and TASS, the safety evaluation scenarios in cut-in situations are suggested and the scenarios are tested with simulation software PRESCAN.

• 자동차안전학회지
• /
• 제9권1호
• /
• pp.19-24
• /
• 2017

This paper present a performance evaluation scenarios to assess the safety performance of autonomous emergency braking (AEB) system for cyclist collision. To guarantee the safety performance of AEB for cyclist, AEB system should be tested in various scenarios which can be occurred in real driving condition. For this, real-traffic car-to-cyclist collision data are analyzed to classify the real traffic collision scenarios. Using this information, typical car-to-cyclist collision scenarios are selected. Also, in order to develop the detail features of these collision scenarios, several accident cases related with these scenarios are explained. Based on these information, test scenarios which can describe the car-to-cyclist collisions occurred in Korea are proposed. For practicality and feasibility of the test scenarios, proposed scenarios should be designed to assess the safety performance of AEB system effectively. For this, some test scenarios are combined or removed based on the consideration about the effectiveness of each scenario to the assessment of the performance of AEB system. To confirm that the proposed test scenarios are realistic and physically meaningful, simulation is conducted using simple AEB system in proposed test scenarios.

• 한국멀티미디어학회논문지
• /
• 제17권8호
• /
• pp.977-987
• /
• 2014

Many of the recent performance evaluation of clustering schemes in wireless sensor networks considered one sink node operation and fixed sink node location without mentioning about any network application requirements. However, application environments have variable requirements about their networks. In addition, network performance is sufficiently influenced by different sink node location scenarios in multi-hop based network. We also know that sink location can influence to the sensor network performance evaluation because of changed multipath of sensor nodes and changed overload spots in multipath based wireless sensor network environment. Thus, the performance evaluation results are hard to trust because sensor network is easily changed their network connection through their routing algorithms. Therefore, we suggest that these schemes need to evaluate with different sink node location scenarios to show fair evaluation result. Under the results of that, network performance evaluation results are acknowledged by researchers. In this paper, we measured several clustering scheme's performance variations in accordance with various types of sink node location scenarios. As a result, in the case of the clustering scheme that did not consider various types of sink location scenarios, fair evaluation cannot be expected.

• 성인간호학회지
• /
• 제26권6호
• /
• pp.653-667
• /
• 2014

Purpose: This study was aimed to develop frequently-used clinical scenarios and scoring rubrics to assess core basic nursing skills in adult health nursing clinical practice for clinical evaluation based on program learning outcomes (PO). Methods: This study was a methodological research combining focus group interviews and questionnaires to select and construct scenarios. Data were collected from clinical practitioners, adult health nursing professors, and new nurses from November, 2013 to April, 2014. The developed scenarios and rubrics were applied to nursing students by way of showing an example. Results: The 12 frequently-used clinical scenarios were developed. The proportion of the evaluation rubrics were 30% for clinical instructors where as 70% for college instructors. In order for students to achieve the important learning outcomes from the courses for clinical practice, four program outcomes (POs) were selected as well as a rubric for each POs was developed. Students who had situation-based clinical practices showed higher levels of satisfaction on mastery of core basic nursing skills and communication skills. Conclusion: This findings of the study suggested the strategies for complementing pitfalls in clinical setting and achieving PO during students' clinical practicum.

• 자동차안전학회지
• /
• 제15권2호
• /
• pp.6-12
• /
• 2023

For the commercialization and standardization of autonomous vehicles, demand for rigorous safety criteria has been increased over the world. In Korea, the number of extraordinary service permission for automated vehicles has risen since Hyundai Motor Company got its initial license in March 2016. Nevertheless, licensing standards and evaluation factors are still insufficient for operating on public roadways. To assure driving safety, it is significant to verify whether or not the vehicle's decision is similar to human driving. This paper validates the safety of the autonomous vehicle by drawing scenario-based comparisons between manual driving and autonomous driving. In consideration of real traffic situations and safety priority, seven scenarios were chosen and classified into basic and advanced scenarios. All scenarios and safety factors are constructed based on existing ADAS requirements and investigated via a computer simulation and actual experiment. The input data was collected by an experimental vehicle test on the SNU FMTC test track located at Siheung. Then the offline simulation was conducted to verify the output was appropriate and comparable to the manual driving data.

• 한국ITS학회 논문지
• /
• 제22권6호
• /
• pp.230-245
• /
• 2023

자율주행 기술의 발전과 함께 자율주행차(automated vehicle, AV)의 안전성 평가의 중요성이 증가하고 있다. 이에 따라 효율적인 안정성 평가를 진행하기 위해 AV가 주행 중 직면할 수 있는 상황을 사전에 정의한 평가 시나리오를 활용하고 있다. 그러나 기존에 활용되는 시나리오는 짧은 구간 내에서 한정적인 상황만을 다루고 있다. 따라서, 실제 도로에서 발생하는 연속적인 상황을 평가하지 못한다는 한계가 존재한다. 이에 본 연구에서는 AV의 안전성을 강도 높게 평가하기 위해 단일 시나리오를 다양한 기하구조가 존재하는 도로 전체 구간을 대상으로 연속적인 평가가 가능한 다중 시나리오로 변환하고자 한다. 특히, 시나리오를 연결하는 조건을 정의하고, 변환된 다중 시나리오를 상황, 범위, 실험 시나리오로 발전시키는 구체적인 방법론을 제시하였으며, 시뮬레이션으로 다중 시나리오를 구현하여 검증하였다.

• 한국화재소방학회논문지
• /
• 제32권2호
• /
• pp.110-117
• /
• 2018

본 연구는 기존 소방훈련의 문제점을 극복하고, 화재대응능력을 향상시키기 위한 실효성 있는 소방훈련시스템을 구축하고자 수행되었다. 무각본 소방훈련 평가시스템은 계획된 시나리오 없이 훈련을 진행하면서 정량화된 훈련결과를 실시간으로 도출할 수 있어 현재의 훈련수준을 객관화시킬 수 있다는 장점이 있다. 이를 위해 IoT센서 기반의 훈련평가시스템을 구축하였으며 대상처 맞춤형 훈련이 가능하도록 구성하였다. 또한 현장훈련테스트를 통해 평가시스템의 적용성을 검토하여 정량화된 결과를 도출하였다. 이러한 평가시스템을 통해 소방훈련을 체계화, 정량화할 수 있으며 훈련자의 소방안전의식 제고 및 실질적 화재대응능력 향상에 기여할 것이라 판단된다.