선호의식 Panel Data를 이용한 동적 경로선택 행동분석

Behavioral Analysis of Dynamic Route Choice with Stated Preference Panel Data

  • 성수련 (서남대학교 토목공학과) ;
  • 남궁문 (원광대학교 건축·도시·토목환경공학부)
  • 발행 : 1999.08.01

초록

본 연구에서는 운전자의 동적 경로선택 행동은 현재의 교통환경 조건뿐만 아니라 과거의 교통환경 및 행동이 현재와 미래에 영향을 미친다는 가정 하에 전주시에 제공될 교통정보를 가상으로 설정하여 선호의식 조사방법에 의해 동일 개인 운전자에게 다시점 반복조사를 실시하였으며, 구조방정식 모델을 구축하여 분석하였다. 그 결과 여행시간정보 변수의 추정계수 및 t 통계 값이 크게 나타나 경로선택에 큰 영향을 미침을 알 수 있었으며, 도심을 관통하는 기린로는 경로선택에 부정적인 반면 도심의 우회도로의 성격을 지닌 천변로는 경로선 택에 긍정적으로 나타남을 알 수 있었다. 구축된 모델에서 가장 적합도가 높은 모델은 상태의존과 계열상관의 개념을 모두 적용한 모델로 나타나 동적모델의 적용 타당성이 보여짐을 알 수 있었으며, 계열상관과 상태의존 추정계수 값을 보면 시간간격이 길수록 추정계수 값이 작게 나타나고 있어 계열상관과 상태의존은 시간간격에 반비례함을 알 수 있었다.

In this study, the dynamic route choice behavior of driver is assumed to be affected by the current conditions of traffic environments as well as the Past traffic environments and activities. The repeated survey of multi-timed to owner drove in Chon-ju city by the virtual traffic information system was performed by the stated preference method. And the LISREL(An analysis of linear structural relationship) model was used. As the results. the variable Parameter and t-value of travel time information on applied model was high and their results have an effect greatly to the route choice. After all, the route choice was negative from Kirin-ro, which Penetrates the downtown, and positive from Chunbyun-ro which was a roundabout way was confirmed. Estimated result of the reasonability, the highest suitable model was ode which applied the concept of serial correlation and stated dependence and was shown applying rightfulness to dynamic model. As the serial correlation and stated dependence parameter value, when time interval was large, parameter value was small and the serial correlation and stated dependence was in inverse proportion ratio to the time interval.

키워드

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