• 한국도로학회논문집
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• 제15권3호
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• pp.159-167
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• 2013

PURPOSES: The purpose of this study is to develop an effectiveness analysis method of exclusive median bus lanes, which is necessary in order to improve operation efficiency of exclusive median bus lanes. METHODS : The operation characteristics of "signalized intersection including exclusive median bus lanes" and "normal signalized intersection" were investigated and the existing capacity analysis method was also reviewed to analyze the effectiveness of exclusive median bus lanes. Delay reduction of passengers using exclusive median bus lanes which can be considered as the benefit of exclusive median bus lanes and the number of people in buses were included in the proposed effectiveness analysis method. RESULTS : It was found that the proposed method expresses properly the effectiveness of exclusive median bus lanes through performing sensitivity analysis and analyzing with the real data of the number of people in buses and passenger cars. It was also found that the proposed method demonstrates the effectiveness that measure of effectiveness of signalized intersections is changed to "sec/person". CONCLUSIONS : It was concluded that the method is a proper effectiveness analysis method because it can reflect the benefit of passengers in buses.

• 대한토목학회논문집
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• 제28권1D호
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• pp.29-34
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• 2008

최근 급속한 고령화로 인하여 꾸준히 증가하는 고령인구의 사회활동과 경제활동을 보장해주기 위한 교통산업의 필요성이 점차 증대되어지고 있다. 그 중에서도 고령인구의 이동권을 보장해주기 위한 많은 정책들이 시행되어 지고 있으며, 최근 2003년부터 서울시를 중심으로 교통약자를 위해 승 하차시 계단을 없앤 저상버스의 도입이 본격화되고 있다. 본 연구에서는 이러한 저상버스의 도입으로 인하여 발생되어지는 효과를 버스운행시간에 많은 영향을 주는 승차시간에 대하여 조사를 실시하였다. 그 결과 전체 연령의 승차시간은 1인당 평균 0.8초의 단축 효과가 있었으며, 특히 노인층의 경우 1.1초인 약 36%의 시간이 단축되어 지는 것으로 조사되었다. 이러한 시간 감축은 버스운행시간 단축으로 이어져 운영비용의 절감을 기대할 수 있다.

• 한국안전학회지
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• 제36권1호
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• pp.72-79
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• 2021

This basic study introduces the concept of S-BRT and develops dwell time estimation models that consider road geometry and S-BRT characteristics for a signal operation strategy to meet the S-BRT's operational goal of high speed and punctuality. Field surveys of low-floor buses similar in shape to S-BRTs and data collection of passengers, station elements, vehicle elements, and other factors that can affect stop times were used in a regression analysis to establish statistically significant dwell time estimation models. These dwell time estimation models are developed by categorizing according to the locations of the signal or sidewalk that have the most impact on the dwell time. In this way, the number of people boarding and alighting the bus at the crowded door and the number of people boarding and alighting the bus at the front door considering the internal congestion was analyzed to affect the dwell time. The estimation dwell time models in this study can be used in the establishment of strategies that provide priority signals to S-BRTs.

• 한국생산제조학회지
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• 제22권1호
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• pp.92-99
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• 2013

The ratio of mobility handicapped was 12,110,000 in late 2009 about 24.4% of total population. The number of handicapped population is increasing continuously due to traffic accidents and industrial disasters. Therefore, the purpose of this research is to suggest a design for passengers on wheelchairs to get into and off to raise handicapped or elderly people's right of mobility. The scope of this research is mobility handicapped especially wheelchair passengers who use vans, small buses, and trains. The ramp design of vans is module form. The ramp is moved with screw jack and guides are installed on each side to increase stability. Moreover, a bridge was installed for smooth getting in and off of the van. The ramp design for small bus is lowed by 200m in order not to have obstacle such as speed bump when getting in or off. In order to reduce vulnerable environment and administration, air slide cylinder was chosen. Lastly, for the ramp design of train, the principle of link was used that the simpler structure made the weight lighter and installation in the train became easier. If we look at the conjugation condition of heterogeneous materials to produce a ramp, proper welding condition for cold steel plate and stainless plate is 3kW output and 3-5m/min of welding speed using laser beam seems proper.

• 환경영향평가
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• 제7권1호
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• pp.109-116
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• 1998

As of July 1997, the registered number of automobiles exceeded 10 million and Korean auto industry produced 2,850,000 cars. Many environmentalists warn that the passenger cars are not sustainable urban transportation system in large cities. The cars produce about 80% of air pollutants, and consume 30% of petroleum imported. For the past 30 years the administration increased the road system, but the length of road per car is decreased from 813m in 1965 to 9m in 1995. The cost of traffic congestion was estimated to be \14.7 trillion in 1996, and is feared to increase without changing the present transportation system. The undesirable impact of cars include the casualties from traffic accidents, insurance loss, and separation of human relatioships. To construct sustainable urban transportation system, three principles should be followed. The first principle is to make the urban streets walkable for the people. The second principle is to encourage bicycling. Roads and traffic systems should be designed to let bicylces travel safely. The third principle is to supply more buses and construct integrated transportation system based on buses. The subway system is too expensive to construct and without the support of a well-organized bus system it may not work efficiently. The Brazilian city of Curitiba has constructed a very efficient bus system only with 1/80 of the estimated cost of subway system. The car-oriented transportation system does not seem to be an envrironmentally sustainable transportation system in most of the Korean cities.

• 자동차안전학회지
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• 제14권1호
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• pp.26-31
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• 2022

Changwon City has the second highest accident rate with 79.6 according to the city bus accident rate. In fact, 250,000 people use the city bus a day in Changwon, The number of accidents is increasing gradually. In addition, a recent fire accident occurred in the engine room of a city bus (CNG) in Changwon, which has gradually expanded the public's anxiety. In the case of business vehicles, the government conducts inspections with a short inspection cycle for the purpose of periodic safety inspections, etc., but it is not in the monitoring stage. In the case of city buses, the operation records are monitored using Digital Tacho Graph (DTG). As such, driving records, methods, etc. are continuously monitored, but inspections are conducted every six months to ascertain the safety and performance of automobiles. It is difficult to identify real-time information on automobile safety. Therefore, in this study, individual automobile management solutions are presented through machine learning techniques of inspection results based on driving records or habits by linking DTG data and Vehicle Inspection Management System (VIMS) data for city buses in Changwon from 2019 to 2020.

• International Journal of Computer Science & Network Security
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• 제21권6호
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• pp.11-16
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• 2021

At the present time, the number of accidents has enlarged speedily and in country like India per day there are about 204 accidents occurred. Accidents of two-wheeler compose a foremost segment of every accident and it can be true for the reason that two-wheelers like bikes not able to produce as many as security measurements normally incorporated in cars, truks and bus etc. General main rootcost of the two-wheeler accidents happen only when people community not remember to wearing a device helmet and during the driving time feels like sleep condition, alcohol disbursement, many of the drivers doesn't know heavy vehicles like Loory and buses approaching into very closer to their two wheelers, contravention of two wheelers in traffic rules and regulations. Let's overcome the above situations; our important objective is to develop an intelligent system device that can successfully facilitate in avoidance of every kind of problems. Suppose any of the above stated situations occurs, at that moment how system device identify and represents the commanders and community, and finally the stated situation be able to taken care of straight away without any further delay. A smart intelligent helmet system is a defending head covering used by rider for making bike riding safer than earlier. This is finished by incorporating sophisticated features like detecting the usage of helmet by the rider, connected Bluetooth module in helmet. In order to maintain the temperature inside the helmet device we need to include CPU fan module inside the device. RF based helmet prevents road accidents and identify whether people community is not using a component helmet or used. Main responsibility of the system is to detect accidents by vibration sensors, accelerometers and also with the help of modules global positioning system and global system for mobile commnicaiton module. A wireless communication device used to discover the accident area site location and likewise notifying the two-wheeler drived people's relatives and short message text information passed to the positioned hospitals.

• 한국ITS학회 논문지
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• 제17권2호
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• pp.58-72
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• 2018

강화군은 제4차 국토종합계획에 의해 기존의 농촌이미지에서 탈피하여 새로운 발전의 계기를 맞이하게 되었다. 그러나 체계적인 대중교통 운영이 사실상 제대로 이루어지지 않아 이를 개선하기 위한 방안 제시가 시급한 실정이다. 본 연구에서는 강화군의 일주일간 승객 교통카드 분석을 통해 강화군의 대중교통 이용 패턴을 분석하였다. 그 결과, 강화군은 평일기준 약 7천1백 명의 승객이 대중교통을 이용하며, 특히 금요일에 가장 높은 이용률을 보였다. 시간대별로는 오전 7~8시에 뚜렷한 오전 첨두가 형성이 되었고, 주로 학생들이 하교하는 16~17시에 오후 첨두가 나타나는 특징이 나타났다. 강화군의 사회경제지표를 이용하여 회귀분석을 수행한 결과, 도서지역의 특성상 의료시설이나 인구, 학교용지 면적과 같이 주거단지나 상업단지가 밀집된 지역에서 많은 승하차가 발생하는 것을 확인할 수 있었다. 본 연구의 결과는 강화군의 버스이용 패턴을 파악하여 향후 체계적인 대중교통네트워크를 구축하기 위한 기초자료로 활용될 수 있을 것이다.

• 한국ITS학회 논문지
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• 제21권4호
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• pp.115-124
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• 2022

서울시 마을버스는 시내버스의 준공영제와는 달리 민영제로 운영되므로 시대적인 환경변화에 열악한 상태이다. 코로나19로 인한 이용객수 감소, 경쟁교통수단 등장으로 인한 수요 이탈 등으로 매출액은 감소되며, 서울시의 재정지원금은 지속적으로 증가되고 있다. 이번 연구는 민영제로 운영되는 마을버스 특성분석을 위해 마을버스 매출액 및 흑자업체의 영향 요인에 대하여 분석하였다. 분석자료는 2018년 서울시 마을버스 재무제표를 활용하였고, 마을버스 대당 매출액 및 흑자업체를 종속변수로, 마을버스 운행계통, 만족도조사, 인문사회변수, 지하철 및 공공자전거 특성을 독립변수로 적용하였다. 분석결과 대당 매출액은 대당운행시간, 차내 안전성, 세대수, 고령자수, 공공자전거 변수가, 흑자업체는 차내 안전성, 신뢰성, 공공자전거 변수가 영향을 미치는 것으로 도출되었다. 특히 경쟁교통수단인 공공자전거가 업계매출에 영향을 미치고 있었으며, 마을버스 경영환경은 시간이 지날수록 어려운 환경이 예상되므로 업계는 자구책을 강구하며, 서울시는 마을버스가 안정적으로 운행될 수 있도록 재정지원 강화가 요구된다.

• 대한토목학회논문집
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• 제34권5호
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• pp.1517-1524
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• 2014

최근 휘발유 가격 폭등, 기후변화 등으로 인한 사회 환경 문제가 증가함에 따라 새로운 친환경 교통수단에 대한 관심이 증가 하고 있다. 이러한 친환경 교통수단 중 하나로 유럽에서는 일찍이 공유자전거(Bike sharing)를 도입하여 운영하고 있으며, 대전시 또한 "타슈"라는 이름으로 2009년부터 서비스가 시작되고 있다. 본 연구에서는 대전시 공유자전거를 대상으로 이용효율을 높이고 최적의 공유자전거 정거장 위치결정을 위한 기초 연구로서 공유자전거 이용 특성을 알아보고 이용수요에 미치는 요인을 다중회귀분석을 이용하여 분석하는 것을 목적으로 한다. 이용특성을 살펴본 결과 공원 인근에서 공유자전거 정거장의 설치 비율에 비해 이용비율이 상대적으로 높았으며, 주중보다 주말 이용수요가 높은 것으로 나타나 대전의 경우 레저를 주목적으로 이용하고 있음을 알 수 있었다. 또한 공유자전거를 빌린 장소로 다시 회귀하는 비율이 매우 높았으며, 절대적 근접 중심성 지표를 기준으로 분석한 결과 공유자전거 정거장의 분포가 균등하게 분포되어 있지 않아 특정 지역(둔산, 유성 등)에 이용패턴이 치우쳐져 있음을 확인하였다. 이용수요에 영향을 미치는 요인으로서는 버스승하차 인원, 자전거도로 연장, 공원여부, 수변공간까지의 거리, 젊은층 비율 등이며, 선정된 변수의 신뢰도(R-Square)는 0.74 수준으로 우수한 것으로 분석되었다.