کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4924636 1363101 2017 9 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله
Queue clearance rate method for estimating passenger car equivalents at signalized intersections
ترجمه فارسی عنوان
روش ترخیص صف در تخمینی معادل های ماشین سواری در تقاطع های سیگنال
کلمات کلیدی
معادل ماشین مسافری؛ تقاطع سیگنال داده شده؛ روش نرخ ترخیص کالا از گمرک صف؛ شبیه سازی؛ VISSIM؛
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی


- Different methods of passenger car equivalent estimation at signalized intersections were compared.
- Simulation using VISSIM was employed for comparison.
- Most techniques relied upon the accurate measurement of saturation flow.
- Queue clearance rate method was found to be a good alternative.

This study explored the use of queue clearance rate method for estimating passenger car equivalent (PCE) at signalized intersections. PCE was estimated based on the assumption that the rate at which a queue of vehicles clears the intersection is a function of its composition. Results of this method were compared with the results estimated by some popular techniques. A four-legged intersection was simulated in VISSIM software and different techniques were used to convert the traffic mix into a uniform one. Parameters of VISSIM were modified to closely reflect the traffic behaviour under heterogeneous traffic conditions. All approaches of the intersection were loaded to saturated conditions and accuracy of estimated PCEs were established by comparing converted flow (PCE/h) with the capacity of an all-car traffic stream. Method based on saturation flow delivered the best result, but its use was limited to traffic composed only of two types of vehicles. Results of regression and optimization techniques were almost similar and the converted flow was close to the capacity of all-car stream. However, accuracy of these methods strongly relied on the correct measurement of saturation flow. Queue clearance rate method did not require value of saturation flow and yielded good estimates of PCE throughout the simulation runs. The maximum difference between the converted flow and capacity estimated with all car situations was found to be less than 10% in all cases considered in this study.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Traffic and Transportation Engineering (English Edition) - Volume 4, Issue 5, October 2017, Pages 487-495open access
نویسندگان
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