• Journal of Korean Society of Transportation
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• v.27 no.5
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• pp.195-208
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• 2009

A network design problem (NDP) formulated as a mathematical program is generally used to find an optimum value to minimize or to maximize some objectives such as total travel time, social benefit, or others. NDP has, however, some limits of describing components of travel patterns like activities and trip generation due to its modeling simplicity, and also it has difficulty in including attributes of regional planning. In order to cope with such limits, this paper extends NDP to the urban planning field and proposes a mathematical program which can describe the interactions between urban social activities and transportation planning. Based on this model the authors try to optimize both urban activities and the transportation system. The model developed in this paper is tested to assess its application with a real-size regional transportation network.

• Proceedings of the KOR-KST Conference
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• 1998.10a
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• pp.488-495
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• 1998

대도시지역은 인구와 경제활동의 밀집도가 매우 높은 지역이나 계속되는 교통혼잡의 가중에의한 신속한 물자이동의 제약과 화물작업을 위한 공간의 부족 등으로 인하여 원활한 수송활동과 물류활동을 제한하는 장애요인들이 화물의 이동에 비하여 많은 실정이다. 도시가 존속하고 생산활동, 소비활동을 하기 위해서는 원자재, 에너지, 제품 등이 도시내·외를 통해 생산부문간과 개인·집단간에 원활한 수송이 이루어져야 한다. 하지만, 서울과 같은 대도시는 우리 나라 전체 경제에 미치는 영향이 매우 큼에도 불구하고 급속하게 증가하는 승용차 위주로 교통소통, 교통체계개선(TSM), 도로망 구축 등의 정책이 시행되어 왔다. 대규모 물류이동이 필수적인 서울의 남대문시장, 동대문시장, 용산전자상가 등 오래전부터 형성되어 온 도심상가지역은 굳이 언급하지 않더라도 서울 근교 신도시에 점차 확산되고 있는 대형 할인매장 등의 유통업무지구, 대형 사무용 건물 등에 원활하고 적시의 수송지원을 위해서는 체계적이고 합리적인 물류체계와 화물시스템 못지 않게 그에 따른 도로의 기하하적 구조나 화물차량을 고려한 신호체계 등이 필요하다. 따라서, 본 연구에서는 일반적인 도시 TSM기법 중에서도 화물차량 위주의 TSM기법에 중점을 두고 대도시에 적용 가능한 도로상의 화물차량 소통기법을 연구하여 그 적용성과 기대효과를 살펴보는데 그 목적이 있다. 본 연구는 크게 도시외곽을 경유하는 화물차량에 관한 도시외곽 화물 TSM 기법과 도시내 통과차량 소통기법, 주·정차 및 조업차량관리기법의도시내 화물TSM 기법으로 구성되어 있다. 도시외곽 화물 TSM 기법의 주내용은 신호체계 개선과 도로의 기하구조 개선 등이며, 도시내 화물 TSM 기법은 화물차량의 도시내 교통소통 기법과 화물차량의 주·정차 관리 및 조업차량 관리에 대한 연구를 수행한다. 대부분의 TSM 개선방안의 시행주체가 경찰청과 시이므로 본 연구의 결과는 도시의 원활한 화물교통소통을 위하여 적용가능할 것으로 예상된다.

• The Journal of the Korea Contents Association
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• v.9 no.9
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• pp.199-209
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• 2009

By materials of traffic safety public corporation, from 2007. 1. 1 to 2007 12. 31, for a year. traffic accidents took place in korea were 211,662 accidents. By this 6,166 people were death, and 335,906 people were wounded. In Gwangju metropolitan city, in 2007 year, 7,881 accidents took place and 152 people were death and 12,728 peoples were wounded, in 2008 year, 8,231 accidents took place and 138 people were death and 13,533 people were wounded. Death people reduced but accidents numbers were in creased 4.4%. Meanwhile, government did various traffic policies to reduce traffic accident. But still, disgrace of underdeveloped country in traffic division couldn't take off. Moreover, traffic safety unconcern of general country people are very deficient. In this research, as the basis of Gwangju province police agency, in traffic accident the present state, I am' going to analyse the part of directly related to citizen life and centering death accident and to present traffic police activities for prevention of traffic accidents.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.2
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• pp.719-727
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• 2013

Four-step travel-demand modeling based on a trip-level has been widely used over many decades. However, there has been a wide variance between forecasted- and real-travel demands, which leads less reliable on the model implications. A primary reason is that person's real travel behavior is not properly captured throughout the model developments. An activity-based modeling (ABM) approach was proposed and developed toward increasing the accuracy and reality of person's travel behavior in the U.S. since 1990', and stands as a good alternative to replace the existing trip-based approach. The paper contributes to the understanding of how the ABM approaches are dissimilar to the trip-based modeling approach in terms of estimation units, estimation process, their pros and cons and etc. We examined three activity-based travel demand model systems (DaySim, CT-Ramp, and CEMDAP) that are most commonly applied by many MPOs (Metropolitan Planning Organization). We found that the ABM approach can effectively explain multi-dimensional travel decision-makings and be expected to increase the predictive accuracy. Overall, the ABM approach can be a good substitute for the existing travel-demand methods having unreliable forecasts.

• Journal of Korean Society of Transportation
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• v.18 no.6
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• pp.33-43
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• 2000

Residential streets play an important role not only as a Place for moving but also as a place for social interactions among urban residents. Social interactions among urban residents are critical factor to draw sense of confidence and communality, and community spirit from the residents. Social interactions among community residents, however, are getting restricted severely by automobile traffic in the residential area. This study shows that the level of social interactions among the residents decreases substantially as traffic volume increases in the area. Other daily activities such as relaxing. playing with children, exercising, and doing small works in the street which can caused social interactions among the residents are also decreased as the volume of automobile traffic increases. Residents living in the area of heavier traffic volume perceive more strongly that automobile traffic is the major reason which deters them from interacting socially each other.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.15 no.4
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• pp.44-53
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• 2016

The era of Big Data has come and the importance of Big Data has been rapidly growing. The part of transportation, the Four-Step Travel Demand Model(FSTDM), a traditional Trip-Based Model(TBM) reaches its limit. In recent years, a traffic demand forecasting method using the Activity-Based Model(ABM) emerged as a new paradigm. Given that transportation means the spatial movement of people and goods in a certain period of time, transportation could be very closely associated with spatial data. So, I mined Spatial Big Data from SNS. After that, I analyzed the character of these data from SNS and test the reliability of the data through compared with the attributes of TBM. Finally, I built a database from SNS for the operation of ABM and manipulate an ABM simulator, then I consider the result. Through this research, I was successfully able to create a spatial database from SNS and I found possibilities to overcome technical limitations on using Spatial Big Data in the transportation planning process. Moreover, it was an opportunity to seek ways of further research development.

• Proceedings of the KOR-KST Conference
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• 1994.10a
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• pp.26-60
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• 1994

• Journal of Cadastre & Land InformatiX
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• v.53 no.1
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• pp.21-36
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• 2023

Activity-based modeling systems have increasingly been developed to address the limitations of widely used traditional four-step transportation demand forecasting models. Accordingly, this paper introduces the Activity-BAsed Traveler Analyzer (ABATA) system. This system consists of multiple components, including an hourly total population estimator, activity profile constructor, hourly activity population estimator, spatial activity population estimator, and origin/destination estimator. To demonstrate the proposed system, the emission impact of land use changes in the 5-1 block Sejong smart city is evaluated as a case study. The results indicate that the land use with the scenario of work facility dispersed plan produced more emissions than the scenario of work facility centralized plan due to the longer travel distance. The proposed ABATA system is expected to provide a valuable tool for simulating the impacts of future changes in population, activity schedules, and land use on activity populations and travel demands.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.194-196
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• 2012

본 연구에서는 해상교통관제제도(VTS)가 적용된 연안해역에서 해상통항흐름에 영향을 미치는 요소를 알아보고자 하였다. 본 연구의 목적을 달성하기 위해 해상교통환경조사는 2007년도부터 2012년까지 어장, 어로활동 및 해양구조물에 대한 마로해 인근해역에 대해 현지 조사방법을 사용하였다. VTS에서 제공하는 서비스종류에 대해 국제표준과 국내 적용 규정을 비교하고 2011년 연안해역에서 제공된 서비스에 대해 분석하였다. 동 해역의 해상교통흐름은 레이더와 선박자동식별장치 정보를 시공간적으로 중첩시켜 최근 6개월간 흐름패턴을 조사하였다. 연구 대상해역은 서남해 진도 인근해역($3,800km^2$)으로 통항분리제도와 탱커선통항금지해역 및 다도해해상국립공원을 포함하고 있다. 연구결과 연안해역에서 제공되는 서비스를 통해 해양사고를 18% 감소시켰다. 서비스 제공수준은 비정규분포를 보이며 공정능력은 향상된 것으로 나타났다. 안전한 해상교통환경 유지하기 위해 정기적인 연안해역 모니터링 및 관리체계의 확립에 대한 대응이 요구된다.

• Proceedings of the Korea Contents Association Conference
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• 2009.05a
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• pp.549-558
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• 2009

By the statistics of traffic safety public corporation as of Feb. 2009 year, in domestic 16,861,965 cars were registered and in this Gwangju is registered by 476,149 cars. Except Ulsan, compare to other metropolitan city, vehicles numbers are fewer. Then, as of 2009. 4. 9. by the announcement of National land and marine ministry, the operation distance of passenger cars of Gwangju metropolitan city is 40.9 km per 1 day and the most highest in the whole country. On the one hand, by the materials of traffic safety public corporation, from 2007. 1. 1 to 2007. 12. 31 for a year, traffic accidents of Korea were 211,662. By this, 6,166 people were death, 335,906 people were wounded. This mean about 17 people death and 920 people wounded per day. In Gwangju metropolitan city, last year 8,231 traffic accidents took place and 138 people were death and 13,533 people were wounded. This while government did various traffic policy to reduce traffic accidents and some degree were progressive. But still the actual circumstances is that disgrace of traffic undevelopment country can't take off. Moreover, the concern for the traffic safety of feeling of general people is very deficient. In this research, with the help of Gwangju province police station. analysed traffic accidents reality of 2009 year March and this is going to look around spring season traffic accidents prevention activities and spring season means from March to June.