최적화 모형을 이용한 고속도로 측정교통량 보정
Correction of Measured Traffic Volume on Expressways Using Optimization Model
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초록
본 연구는 도로교통량통계연보에서 제시하고 있는 고속도로 교통량을 보정하기 위해 측정오차를 최소화하면서 TCS 교통량과 교통량 균형을 만족시키는 최적화 모형을 개발하였다. 이를 위해 본 연구에서 구축한 모형을 실제교통량과 비교･검증하였다. 모형 검증 결과, 교통량 균형에 만족하도록 측정교통량을 보정할 경우, 보정교통량은 측정교통량에 비해 실제교통량과의 차이가 적은 것으로 나타났다. 경부고속도로 40개 구간에 적용 결과, 전체 구간에대한 측정교통량은 –8.1%~9.6% 보정되었으며, 보정된 교통량만큼 측정오차가 감소하는 것으로 나타났다. 본 연구는 고속도로의 규모와 역할이 증대되고 있는 가운데 고속도로 측정교통량의 정확성을 향상시켰다는 점에서 의미가 있다.
Abstract
This study developed the optimization method to correct the measured traffic volume of the expressway that minimizes the measurement error and satisfies the traffic balancing with TCS. For this purpose, the model constructed in this study was compared and verified with the true traffic volume. Verification result of the model, it was found that the measurement error is reduced when the measured traffic volume is corrected for the traffic volume balance. As a result of applying it to 40 links of the Kyoungbu expressway, the measured traffic volume was corrected by -8.1%~9.6% and the measurement error was decreased as much as the corrected traffic volume. This research is meaningful in improving the accuracy of the measured traffic volume of the expressway, while the scale and role of the expressway are increasing.
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