오차율을 이용한 교통존 특성별 통행발생량 조정계수 산정 연구

추상호(Choo Sang-Ho),이향숙(Lee Hyang-Sook),신천규(Shin Cheon-Gyu) 대한국토·도시계획학회 2012 國土計劃 Vol.47 No.4

The paper estimates adjustment factors for trip generation by traffic analysis zone characteristics based on the trip error rates between forecast and estimated data. We collect both 2006 forecasts using the 2002 household survey and 2006 estimates using the 2006 household survey in the Seoul metropolitan areas, and explore trip error rates and patterns according to the trip purposes. This research obtains various socio-economic variables affecting the trip rate errors and conduct the correlation analysis. For the factors having correlations, proper strata are defined, respectively, and verified if they are statistically reliable through the analysis of variance. Then, the average adjustment factor and its range considering the standard deviation are generated at each stratum. Our results indicate that the four types of trips (i.e. total, commute, school, business) have adjustment factors. Finally, the adjusted trips are compared with the existing forecasts to evaluate the applicability of the adjustment factors. As results, the adjusted trips show lower trip error rates via RMSE(Root Meet Squre Error)%.

모빌리티와 ITS

추상호(CHOO, Sangho) 대한교통학회 2024 교통 기술과 정책 Vol.21 No.1

GPS를 이용한 대규모 첨단교통조사기법 연구

추상호(Choo Sangho),권세나(Kwon Sae Na) 대한토목학회 2008 대한토목학회 학술대회 Vol.2008 No.10

통행시간예산의 특성 분석

추상호(Choo Sangho),나승원(Na Seung Won) 한국도시행정학회 2011 도시 행정 학보 Vol.24 No.2

It is important to identify travel behavior of individuals for the efficient transportation investment, and in particular the understanding of the pattern of travel time use has a great usefulness. Hereupon this study is to examine the travel time budget that has been discussed continuously, checking the regularity of travel time and analyzing characteristics at the aggregate level as shown in the previous studies of travel time budget. This study used the Seoul Metropolitan Area Travel Survey in 2002 and 2006, and thereby examined the changes of travel time budget for each individual and total travelers of the Seoul Metropolitan Area and analyzed for each socioeconomic index as the characteristic factor of travel time budget and analyzed the characteristics of travel time classified by travel purpose, mode, and regions. We confirmed that age, gender, income, employment status, ownership of vehicles are significant as the factors that explain daily travel time. It was identified that though individual travel time budget can show differences, the travel time budget classified by type and group at the aggregate level was somewhat constant. It was also found that the travelers tend to extend the distance and frequency of travel rather than diminish the travel time in order to maximize the utility.

대도시 통행발생 원단위 적용 개선에 관한 연구

추상호(Choo Sangho),정성봉(Chung Sung Bong) 한국도시행정학회 2010 도시 행정 학보 Vol.23 No.4

Trip generation rates has been often used to estimate travel demand for specific transportation facilities and land-use developments. However, there has been a number of errors in demand forecasting because a standardized and rational procedure to apply trip generation rates does not exist. In particular, demand for large-scale developments such as residential land development could have been affected by trip generation rates, resulting in huge or small traffic impacts on the arterial roads nearby. Such results heavily depend on their application methods. The purpose of this study is to develop new methods for survey, calculation, and application of trip generation rates in order to improve their reliability in travel demand forecasting. For survey of trip generation rates, we proposed a sample size look-up table based on a level of confidence and a stratified random sampling method considering residential land size. For calculation of trip generation rates, category analysis of trip generation rates was suggested for travel demand analysis of residential area development sites. For application of trip generation rates, weighted trip generation rates need to be applied to demand forecasting for new residential area development, considering their locations, development sizes, populations, and so on. Our research results would be expected to improve current travel demand forecasting methods for new residential area developments using trip generation rates.

대중교통 이용자 만족도에 미치는 요인 분석

추상호(Sang Ho Choo),이향숙(Hyang Sook Lee),강동수(Dong Soo Kang) 서울연구원 2012 서울도시연구 Vol.13 No.3

고령자의 통행에 미치는 요인 분석

추상호(Choo Sangho),송재인(Song Jae-In),권봉성(Kwon Bong-Sung) 대한국토·도시계획학회 2011 國土計劃 Vol.46 No.2

Recently rapid aging society has been a critical issue everywhere in Korea. In transportation field, however, travel behavior of the elderly has not much been considered in transportation planning and policy, thereby limiting their mobility and accessibility. This study is to identify key factors influencing travel behavior of the elderly using 2006 household travel survey data in Seoul Metropolitan Area. To this end, we first conducted descriptive analysis on travel characteristics between elderly (65 years or older) and non-elderly (19 ~ 64 years) groups with respect to trip frequencies, trip purpose, mode, trip distance, and travel time. Then, we developed ordered probit models for number of trips, and log-linear models for travel distance and time by total and travel purpose (work and shopping/social/personal business), considering household and personal characteristics, and land use variables as explanatory variables, and compared the model results between two groups. The results show that economic and socio-demograhic variables (such as gender, age, household size, and income) and land use (such as population and employment density) variables significantly affect elderly travel.

근린생활권 단위의 압축도시개발이 통행수단분담율과 자족성에 미치는 효과분석

성현곤(Sung Hyun-Gon),추상호(Choo Sang-Ho) 대한국토·도시계획학회 2010 國土計劃 Vol.45 No.1

This study has been aimed to identify the effects of compact-city development at the living area of neighborhood level on transportation policy measures in the capital region. For the purpose of it, the study established the regression analysis model of compact-city planning elements to modal split and inner-travel ratio. The planning elements are defined as Density, Diversity, Design and Accessibility. The analysis results demonstrate that compact-city planning should be applied to the capital region at the neighborhood level to reduce car-oriented travel pattern. In addition to it, the results suggest that policy measures of both modal split and self-sufficiency might not be simultaneously accomplished by compact-city planning. For example, both population density and rail accessibility have a positive impact on reducing car split while they have a negative impact on self-sufficiency and inner-travel ratio. It means that compact-city planning at the neighborhood level need to be applied to achieve either of them, not both.

SP조사를 활용한 화물 전환수요모형 구축 연구

이향숙(Lee, Hyang-Sook),추상호(Choo, Sang-Ho) 대한국토·도시계획학회 2014 國土計劃 Vol.49 No.8

This study analyzes preference and shift effects of freight modes, based on a sensitivity survey for companies related to Mode Shift Support Business. Freight shift demand models from roads to rails or maritime are developed using the survey responses to travel time, travel cost and shift subsidy scenarios by a binary logit modeling approach. Results of the models for modes(rail/maritime), item(container), line(Seoul-Busan) indicate that the mode shift rate decreases as travel time and cost increase, while showing an opposite pattern in the case of shift subsidy. The container model was more influenced by travel time and cost than the total item model, but the effect by shift subsidy was less great. The value of travel time when taking rail or maritime was 10,618won for 20ft and 21,236won for 40ft. In the case of container, 9,455won and 18,911won, and in the case of Seoul-Busan line, 10,765won and 21,529won were estimated, respectively. The research contributes to improve current systems and establish proper subsidy standards.

서울시 생활권별 보행량 변화에 미치는 요인 분석

이연수(Lee, Youn-Soo),추상호(Choo, Sang-Ho),강준모(Kang, Jun-Mo) 대한국토·도시계획학회 2013 國土計劃 Vol.48 No.5

This study is to identify key factors to affect change of pedestrian volumes by neighborhood type. To this end, we first built data about change of pedestrian volumes of administrative dongs between 2006 and 2010 in Seoul, urban spatial characteristic factors using geographical information system, and socio-economic and land use data. Then we developed regression models of pedestrian volume changes by neighborhood unit. In the models, we considered some factors such as social economics index, land use, urban planning, and income, together with urban spatial characteristics. The models results show that the more diverse land use, the higher walking rate. It indicates that mixed land use planning is recommended to promote walking. Furthermore, it turns out that socio-economic and other factors such as gender, age and employment density affect significantly pedestrian volume changes. Finally, such effects on pedestrian volume changes are similar or different, depending on neighborhood unit.