實時間 交通信號制御를 爲한 루프 檢知器의 最適形態決定에 關한 研究

It requires the detector system which can collect highly reliable traffic data in order to perform the real-time traffic signal control. This study is to decide the optimal shape of inductive loop for the real-time traffic signal control. This loop is located at the stopline in the signalized intersection for DS(Dgree of Saturation) control. In order to find out the optimal shape of loop, 6 types of experiments were performed. The results of the basic experiments of loops are as follows; - the optimal number of turns for loop is 3 turns, - the impedance values of the loop detectors are similar to that of NEMA standards. - the 1.8 × 4.5M loop is excellent for sensitivity in actual detection range of car length comparing to other shape of inductive loops. At the experiments of establishments of the optimal loop shape, it found that 1.8 4.5M loop has the highest values of ΔL comparing to other types of loops, It means that the range of Lead-in cable length of this loop. And this loop is highly reliable in occpupancy time. Conclusively, the 1.8×4.5M inductive loop is the optimal solution as a stop line loop detector for real-time traffic signal control.