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Defining Levels of Service for Arterials Surrounding Lattakia City Center

تحديد مستويات الخدمة على الطرق الشريانية المحيطة بمركز مدينة اللاذقية

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 Publication date 2018
  fields Transportation
and research's language is العربية
 Created by Shamra Editor




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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
  1. 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.

  2. 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.

  3. 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.

  4. 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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