Kelengahan merupakan faktor yang penting dalam penilaian tahap perkhidmatan persimpangan lampu isyarat. Pada masa kini, masalah kelengahan sering berlaku di banyak kawasan bandar. Di persimpangan yang terdiri daripada dua lampu isyarat yang terletak bersebelahan, kesesakan yang teruk kebiasaanya berlaku. Kebiasaanya, kenderaan terpaksa berhenti di persimpangan hiliran akibat masa hijau antara kedua-dua persimpangan lampu isyarat tidak dapat di optimumkan. Kajian ini bertujuan untuk mengkaji hubungan antara masa isyarat imbangan dengan kelengahan supaya jumlah aliran kenderaan yang lebih tinggi boleh dicapai. Selain itu, kesan daripada cara motorsikal berhenti di persimpangan terhadap masa kelengahan juga akan dijalankan dalam kajian ini. Pada akhir kajian ini, keputusan menunjukkan bahawa masa isyarat imbangan yang lebih lama diperlukan untuk mengecapi kelengahan yang minimum apabila persimpangan lampu isyarat terletak lebih jauh daripada satu sama lain.
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Delay is an important factor in the assessment of the level of service of a signalised intersection. Nowadays, traffic delay problems are manifesting in many urban city. At urban intersections consisting of two adjacent signalised intersections, heavy congestion usually occur. It is very common to see that the vehicles were usually delayed at the downstream intersection as the green time between the two signalised intersections were not optimized. This study is to investigate the relationship between the signal offset time and the delay so that a higher progression volume can be achieved. Other than that, the effects of the motorcycles stopping behaviour on the delay time were also investigated in this study. At the end of this study, the results show that longer offset time was required to achieve minimum delay when the signalised intersections are located further apart from each other.
Calibration and assessment of delays for coordinated signalised intersection / Wong Keng Soon