IJE TRANSACTIONS C: Aspects Vol. 31, No. 6 (June 2018) 870-876   

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D. Abhigna, M. Ramees and K. V. R. Ravishankar
( Received: September 27, 2017 – Accepted in Revised Form: March 02, 2018 )

Abstract    Uncontrolled intersections are the intersections where there are no external signs or signals to control the movement of vehicles. In mixed traffic conditions priority rules are often violated by the road users. In All-way-stop-controlled intersections (AWSC), the vehicle should stop themselves before they enter the intersection and should check whether any vehicles are present in the other approaches of the intersection. If no vehicle is present, then they can cross the intersection. For this study, data were collected from two uncontrolled three-legged intersections located at various parts of India and critical gap required for each vehicle combination to cross the intersection are extracted. Gap Acceptance method is used for mixed traffic condition because it is based on the critical gap and follow-up time, which in turn depends on the type of vehicles and traffic conditions. This study tries to analyze the effect of vehicle type on gap acceptance behaviour at uncontrolled three-legged intersection. From this study, it is observed that size of the vehicles and traffic volumes has an influence on the critical gap. Depending on the major road vehicle type combinations, the critical gap for each right turning subject vehicle varied from minimum of 1.4 s to a maximum of 8.7s.


Keywords    Gap Acceptance, Critical Gap,Mixed traffic, Uncontrolled Intersections.


چکیده    تقاطع های کنترل نشده تقاطع هایی هستند که در آن نشانه های خارجی یا سیگنال هایی برای کنترل حرکت وسایل نقلیه وجود ندارد. در شرایط ترافیکی مرکب، قوانین اولویت اغلب توسط کاربران جاده ای نقض می شوند. در تقاطع های متقاطع توقف (AWSC)، خودرو باید قبل از ورود به تقاطع، خود را متوقف کند و باید در سایر روش های تقاطع نقشی داشته باشد. اگر هیچ وسیله نقلیه در تقاطع وجود نداشته باشد، آنها می توانند از تقاطع عبور کنند. برای این مطالعه، داده ها از دو تقاطع مستطیلی کنترل نشده سه ناحیه در نقاط مختلف هند جمع آوری شده و شکاف بحرانی مورد نیاز برای هر وسیله نقلیه برای عبور از تقاطع استخراج می شود. روش پذیرش گاف برای شرایط ترافیکی مخلوط استفاده می شود، زیرا بر اساس شکاف انتقادی و زمان پیگیری است که به نوبه خود به نوع وسایل نقلیه و شرایط ترافیک بستگی دارد. در اين تحقيق سعی شده تا اثر نوع خودرو بر رفتار پذیرش شکاف در تقاطع بی نظير سه پا بررسی شود. از این مطالعه مشاهده می شود که اندازه وسایل نقلیه و حجم ترافیک بر شکاف بحرانی اثر می گذارد. بسته به ترکیبات نوع وسیله نقلیه جاده ای، شکاف بحرانی برای هر وسیله نقلیه سوار سوئیچ راست از حداقل 1.4 ثانیه به حداکثر 8.7 ثانیه متغیر است.


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