• Journal of the Korea Society of Computer and Information
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• v.18 no.8
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• pp.77-85
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• 2013

In this paper, we proposed the vehicle data format of digital tachograph to improve the vehicle data format of the MOLIT(Ministry of Land, Infrastructure and Transport). The vehicle data collection and analysis is currently available through digital tachograph mandatory installation for commercial vehicles. And public agency is used the vehicle data format as a transmission format defined by MOLIT's guideline for their vehicle data processing. However, Vehicle data format is different for each manufacturer and MOLIT's vehicle data format is also need to advance. We confirmed the proposed the vehicle data format improved based on the vehicle data format of MOLIT through the system implementation and experiment in this paper.

• Journal of the Korea Society of Computer and Information
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• v.18 no.6
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• pp.47-54
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• 2013

In this paper, we proposed an efficient digital authentication service system for the vehicle data collected from digital tachograph. In domestic, There is no method available to verify that information has not been forged and reliable information for collected vehicle data. The proposed method in this paper can prove transmitted vehicle data that have not been forged using the signature value. The signature value of digital authentication is produced with the digital signature generation key after obtaining the hash value of vehicle data. It is achieved through checking the stored hash value and the hash value match that is obtained with the digital signature verification key from the digital signature value. We confirmed the proposed system can ensure reliability of vehicle data through the system implementation and experiment.

• Review of KIISC
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• v.33 no.4
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• pp.7-12
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• 2023

디지털운행기록장치(DTG)는 차량의 운행정보를 기록하고 저장하는 장치로, 여객 및 화물자동차에 의무적으로 장착되어 여러 실시간 운행기록을 수집하고 관리할 수 있도록 하고 있다. 대부분 버스, 택시, 화물차 등에 사용되며, 상용 자동차의 운전자를 인증하고 과도한 운행으로 인한 사고를 줄이는 데 중요한 역할을 한다. 본 연구에서는 기존의 국내 디지털운행기록장치 관련 지침 및 표준 사양의 보안 기술 관련한 내용을 살펴보고 더 나아가 문헌조사를 통해 발견된 디지털운행기록장치 데이터 보호 관련 기본적 보안원칙을 소개한다. 더불어, 디지털 포렌식을 위한 데이터 식별 방법에 대한 실험적인 시도 사례의 결과를 함께 소개한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.3
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• pp.536-542
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• 2016

Freight and passenger transport operators must converts the operation records of digital operation recording device (Digital Tachograph) that is mounted on their vehicle in a certain format, and report them to governmental agencies. However, for most of the individual carrier who cannot access a computer environment easily and are not familiar with the use of computer, it has given a big inconvenience to them because the procedures for entering the data obtained from the operation are so complicate. Therefore, in this study, a mobile system for converting the operation record file to request form of a government agency is designed and developed, so that the converted file can be submitted to the government agency in a simple way through the personal mobile device. By entering the data obtained from an actual operation recording device into the system, converting the data in the proposed algorithms, and checking the contents of the converted file in data viewer, it was confirmed that the proposed functions is working properly in the system.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.4
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• pp.483-490
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• 2015

In this paper, The UBI(: Usage Based Insurance) insurance products for existing and analyze a variety of data pertaining to the operation or disposition or utilization of advanced telematics devices, such as digital recording device operates as a means to identify the insured or the insurer operates in real time recording (monitoring). Therefore, this study performs a city in wireless communication infrastructure functions Traffic Information System : leverage(UTIS : Urban Traffic Information System) and to develop a system that linked insurance products, such as PAYD, PHYD and MHYD. Utilizing the UTIS systems and analyze the driver's vehicle driving recorder tendencies.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.11 no.6
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• pp.49-59
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• 2012

Recently, various alternatives for safety and efficiency of commercial vehicles have been considered, and one of the new alternatives is the application of a digital tachograph. In Korea, the installation of a digital tachograph to commercial vehicles was regulated from 2011 and Korea Transportation Safety Authority developed e-TAS to analyze the monitoring data from digital tachographs installed in the order of 100 commercial vehicles. This study performs the potential impact analysis of the DTG installation, which includes a trend of dangerous driving, a trend of traffic accidents and cost-effective analysis, a trend of fuel consumption and cost-effective analysis, a cost-effective analysis of social benefits using e-TAS data. Depending on the frequency of dangerous driving, the participants are divided into three groups; high-dangerous group, average-dangerous group and low-dangerous group. The high-dangerous driving group shows lower km/liter than the low-dangerous driving group by 15% for buses and taxis and by 30% for trucks. About $CO_2$ emission, the difference becomes bigger; 25%, 25% and 42% for buses, taxis and trucks, respectively. Although this study is a short-term period analysis, the methodology will be applicable for the long-term period analysis with larger data.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.489-492
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• 2011

자동차 운전자는 자신의 자동차 보험료를 할인 받고자 특약제도를 이용한다. 이 중 이미 외국에서 시행되어 좋은 호응을 받아 국내에서도 시행 되고 있는 승용차 요일제 보험이 있다. 승용차 요일제 보험에 가입하기 위해 의무적으로 장착해야 하는 자동차 운행정보 확인 장치는 예비가입자들로부터 많은 관심을 받고 있다. 하지만 보험가입자(운전자)가 보험사에 운행정보확인장치의 차량운행기록을 보내기 위해 다소 번거로운 과정을 거쳐야 한다. 본 논문에서는 보험개발원에서 제시한 '자동차 운행정보 확인 장치 인증규정'을 바탕으로 보험가입자가 편리하게 차량운행기록을 보험사에게 보내기 위해 단거리 무선통신이 내장되어 있는 자동차 운행 정보 확인 장치의 하드웨어 설계와 이것을 활용한 보험사의 운행정보 수집 시스템에 바로 전송할 수 있는 스마트폰 단말기 모니터 프로그램의 설계에 대해 연구하였다.

• KIPS Transactions on Computer and Communication Systems
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• v.1 no.2
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• pp.71-78
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• 2012

The digital tachograph is a device that automatically records speed and distance of a vehicle, together with the driver's activity and vehicle status at an accident. It records vehicle speed, break status, acceleration, engine RPM, longitude and latitude of GPS, accumulated distance, and so on. European Commission regulation made digital tachographs mandatory for all trucks from 2005. Republic of Korea made digital tachographs mandatory for all new business vehicles from 2011 and is widening the range of vehicles that must install digital tachographs year by year. This device is used to analyze driver's daily driving information and car accidents. Under a car accident that makes the device reliability unpredictable, it is very important to store driving information with maximum reliability for its original mission. We designed and implemented a practical digital tachograph. This paper presents a storage scheme that consists of a first storage device with small capacity at a high reliability and a second storage device with large capacity at a low cost in order to reliably records data with a hardware at a low cost. The first storage device records data in a SLC NAND flash memory in a log-structured style. We present a reverse partial scan that overcomes the slow scan time of log-structured storages at the boot stage. The scheme reduced the scan time of the first storage device by 1/50. In addition, our design includes a scheme that fast stores data at a moment of accident by 1/20 of data transfer time of a normal method.

• Proceedings of the KIEE Conference
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• 2002.07d
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• pp.2350-2352
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• 2002

1970년대에 제작되어진 전기기관차는 대부분이 기계적인 방식을 많이 채택하였고 디지털 기술의 미비로 아날로그방식을 이용해서 DC모터나 브레이크 기기 등을 제어했다. 이들 장치들은 고장의 판단 여부를 외관이나 릴레이의 접점이 on/off 되었는지를 시각적으로 확인한 후 판별 하였고 또한 이러한 고장을 찾는다 하더라도 고장의 원인이나 고장난 부분을 찾아낸다는 것이 매우 어려웠다. 또한 기관차의 운행 기록을 할 수 없기 때문에 기관차의 운행시 주변 상황이나 시스템의 운용 상황들을 알 수 없었다. 따라서 본 시스템을 이용하여 기관차의 운행 도중에 발생되는 모든 상황을 디스크에 기록하며 또한 디스크의 내용을 분석할 수 있도록 하여 운행 중에 고장이 발생하면 고장 시점부터 시스템과 주변상황들을 기록하여 기관차를 검수하는 검수원들이 보다 빠르고 효과적으로 기관차를 분석하고 고장을 진단하여 기관차를 유지보수 할 수 있도록 전기기관차의 모니터링 시스템을 개발하였다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.15 no.1
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• pp.1-15
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• 2016

This study aims to develop a model by which city bus drivers who are likely to cause an accident can be figured out based on the information about their actual driving records. For this purpose, from the information about the actual driving records of the drivers who have caused an accident and those who have not caused any, significance variables related to traffic accidents are drawn, and the accuracy between models is compared for the classification models developed, applying a discriminant analysis and logistic regression analysis. In addition, the developed models are applied to the data on other drivers' driving records to verify the accuracy of the models. As a result of developing a model for the classification of drivers who are likely to cause an accident, when deceleration ($X_{deceleration}$) and acceleration to the right ($Y_{right}$) are simultaneously in action, this variable was drawn as the optimal factor variable of the classification of drivers who had caused an accident, and the prediction model by discriminant analysis classified drivers who had caused an accident at a rate up to 62.8%, and the prediction model by logistic regression analysis could classify those who had caused an accident at a rate up to 76.7%. In addition, as a result of the verification of model predictive power of the models showed an accuracy rate of 84.1%.