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Register a new userDefining Levels of Service for Arterials Surrounding Lattakia City Center
تحديد مستويات الخدمة على الطرق الشريانية المحيطة بمركز مدينة اللاذقية
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Tishreen University ورقة بحثية
Publication date
2018
fields
Transportation
and research's language is
العربية
Created by
Shamra Editor
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يقدم هذا البحث تقييماً لمستويات الخدمة على الشوارع الشريانية التي تصب في مركز مدينة اللاذقية و التي تعد محاور ربط رئيسية للحركة بين المناطق و التجمعات الرئيسية المختلفة في المدينة. لذلك فإن تحسين الوضع المروري على هذه الشوارع سيكون له تأثير كبير على رفع مستوى الخدمة و ما يصاحبه من زيادة في السرعة و تخفيض في الضياعات الزمنية و أزمنة التأخير، بالإضافة إلى تقليل الانبعاثات و حوادث السير. أجريت الدراسة في هذا البحث على ستة شوارع محيطة بمركز مدينة اللاذقية لتعيين مستوى الخدمة عليها، و قد تم استخدام العربة المتحركة في القياس و تم القيام بالعديد من الرحلات خلال فترة الذروة و خلال فترة الجريان الحر من أجل قياس سرعة الجريان الحر و أزمنة الرحلة و السرعة الوسطية. تم تقسيم الشوارع إلى عدد من القطاعات و تم استخدام الطريقة الحقلية و الطريقة التحليلية المتبعة من قبل دليل سعة الطرق HCM2000 لتعيين مستوى الخدمة و أخيراً مقارنة النتائج. أظهرت هذه الدراسة تدني مستوى الخدمة على أغلب القطاعات، كما أظهرت وجود اختلافات في قيمة مستوى الخدمة بين الطريقتين الحقلية و التحليلية، و أكدت على ضرورة اتخاذ الإجراءات الملائمة لرفع مستوى الخدمة على شوارعها.
This research offers assessment of the urban streets in Lattakia city center. These arterials form main traffic links between major regions. Therefore, Traffic improvement on these streets will have great effect on improving level of service (LOS), increasing speeds, decreasing delay time, decreasing the emissions and traffic accidents. This research was done on six streets surrounding Lattakia city center for defining LOS. Floating vehicle was used in this study. Many trips were executed during free flow and peak periods for measuring free flow speed, Travel time and average speed. Every street was divided into many sections. This study uses field method and computation method adopted by Highway Capacity Manual (HCM2000) for defining LOS on streets and comparing results. This study showed low values of LOS for most sections and it indicated deference between field method and computation method. Also, it expressed the necessary to take suitable procedures to increase LOS on these streets.
Artificial intelligence review:
Research summary
تقدم هذه الدراسة تقييماً لمستويات الخدمة على الشوارع الشريانية المحيطة بمركز مدينة اللاذقية، والتي تعتبر محاور ربط رئيسية بين المناطق والتجمعات المختلفة في المدينة. يهدف البحث إلى تحسين الوضع المروري على هذه الشوارع من خلال زيادة السرعة وتقليل أزمنة التأخير والانبعاثات وحوادث السير. أجريت الدراسة على ستة شوارع باستخدام العربة المتحركة لقياس سرعة الجريان الحر وأزمنة الرحلة والسرعة الوسطية خلال فترات الذروة والجريان الحر. تم تقسيم الشوارع إلى عدة قطاعات واستخدام الطريقة الحقلية والطريقة التحليلية المستندة إلى دليل سعة الطرق HCM2000 لتحديد مستوى الخدمة. أظهرت النتائج تدني مستوى الخدمة في معظم القطاعات المدروسة، مع وجود اختلافات بين الطريقتين الحقلية والتحليلية. أكدت الدراسة على ضرورة اتخاذ إجراءات ملائمة لرفع مستوى الخدمة على هذه الشوارع، مثل إضافة حارات مرورية جديدة وتحسين نظام الإشارات الضوئية وتطوير منظومة النقل العام.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة جداً في سياق تحسين الوضع المروري في مدينة اللاذقية، إلا أنها تعاني من بعض النقاط التي يمكن تحسينها. أولاً، الاعتماد الكبير على الطريقة التحليلية المستندة إلى دليل سعة الطرق HCM2000 قد لا يكون مناسباً تماماً للظروف المحلية في اللاذقية، حيث تختلف الخصائص المرورية والبنية التحتية عن تلك الموجودة في الدول المتقدمة. ثانياً، الدراسة لم تأخذ في الاعتبار بشكل كافٍ تأثير العوامل البيئية والمناخية التي قد تؤثر على حركة المرور. ثالثاً، هناك حاجة لمزيد من البيانات الحقلية لتقديم صورة أكثر دقة وشمولية عن الوضع المروري. أخيراً، يجب أن تتضمن الدراسة توصيات أكثر تفصيلاً حول كيفية تنفيذ الإجراءات المقترحة لتحسين مستوى الخدمة، بما في ذلك الجوانب المالية والإدارية.
Questions related to the research
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ما هو الهدف الرئيسي من هذه الدراسة؟
الهدف الرئيسي هو تحسين الوضع المروري على الشوارع الشريانية المحيطة بمركز مدينة اللاذقية من خلال زيادة السرعة وتقليل أزمنة التأخير والانبعاثات وحوادث السير.
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ما هي الطرق المستخدمة في قياس مستوى الخدمة في هذه الدراسة؟
تم استخدام العربة المتحركة لقياس سرعة الجريان الحر وأزمنة الرحلة والسرعة الوسطية، بالإضافة إلى الطريقة الحقلية والطريقة التحليلية المستندة إلى دليل سعة الطرق HCM2000.
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ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟
أظهرت النتائج تدني مستوى الخدمة في معظم القطاعات المدروسة، مع وجود اختلافات بين الطريقتين الحقلية والتحليلية، وأكدت على ضرورة اتخاذ إجراءات ملائمة لرفع مستوى الخدمة.
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ما هي التوصيات التي قدمتها الدراسة لتحسين مستوى الخدمة؟
أوصت الدراسة بإضافة حارات مرورية جديدة، تحسين نظام الإشارات الضوئية، وتطوير منظومة النقل العام.
References used
High Capacity Manual 2000, chapter 15, Urban Streets, Transportation Research Board, USA, 2000
Travel Time Data Collection Handbook, Us. Department of Transportation, Federal Highway Administration, Texas Transportation Institute, Report FHWA-PL-98-035, March 1998
Travel Time Study Of Auckland Arterial Road Network Using GPS Data, Department of Civil and Environmental Engineering, The University of Auckland, 2009
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Lattakia City has faced many negative impacts of the extending crisis that Syria lives, such as defensive arrangements of most governmental facilities, and refuging millions of other Syrian cities citizens. This new situation was reflected on the tra
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In this paper, the “moving observer” concept was used to measure travel time and average speed on major and minor collectors in Lattakia center. The vehicle was equipped with a GPS to collect necessary information, a number of trips was executed during daily peak period and free flow speed; then the data was processed and analyzed to generate max, min, and average speeds, constructing LOS for these streets.
Study disclosed low values of LOS for some major collectors in the city, and expressed the need to take urgent arrangements to increase LOS on streets. The efficiency of “moving vehicle” concept was proved in implementing traffic studies.
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