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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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Added by
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.
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
ffic conditions on most streets and roads of city, especially on center streets. In addition it caused many traffic congestions, which led to investigate and analyze the current situation and finding traffic solutions for reducing these congestions on center streets.
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.
Container transportation is one of the essential elements of modern ren aissance in
shipping business in the world. Due to its extremely important, most countries have
focused (especially the developed ones) on development of their maritime fleets
and ports,
in order to be able to keep up and keep the remarkable development and extremely rapid
progress in containerization technology.
Port capabilities should be commensurate with the developments in maritime transport
fleets and their transport patterns represented by container vessels that require advanced
port services such as high efficiency of workers and cranes, and modern and fast
performance specialized equipments, and modern electronic systems.
The study addressed the basic criteria for the level of services in the container terminals
that have been identified in the United Nations Conference on Trade and Development
UNICTAD 2012, These criteria were applied to Lattakia International Container Terminal
(LICT), where the relative waiting time ε and productivity coefficient (P) were
calculated for the duration of the ship's stay in the port, and the statistical indicators of the
times of ships at the Lattakia International Container Terminal and the container handling
rates was studied during the period Extending from 2014 to 2017, The study concluded
that the average wait time relative ε achieved the value of 0.0553, which put it at level B
which is the second level of four levels, A, B, C, D, in addition to the level B is also
achieved by productivity coefficient (P) and the value of 54.4 during the The study period.
The research aims to analyze the reality of the health service in the Syrian private
hospitals in Lattakia City; by answering the following questions:
* What is the level of the health service in hospitals in terms of the availability of the
follo
wing basic dimensions: Tangibility, empathy, responsiveness, assurance and security,
reliability and credibility?
* What is the impact of the dimensions of health service quality in customer
satisfaction?
The survey form was designed and distributed to (105) customer of the patients who
checked in private hospitals in Lattakia City, where a convenience sample was chosen.
The results of research indicated, that there is a good understanding of the following
dimensions: Tangibility, empathy, responsiveness, and assurance and security between
members of the research sample. The study results also indicated that there is a significant
and positive effect of (empathy and emphasize security and reliability) dimensions on
customer satisfaction as dependent variable, which the regression model explained (80%)
of the differences in customer satisfaction, while Tangibility and speed of response did not
affect customer satisfaction as a dependent variable.
This study aimed to extent of the distribution of the Van Hiele levels in geometrical reasoning in secondary school students (the second secondary grade), and its relationship with geometric- proof And logical-mathematical thinking, And a random samp
le of (200) two hundred students was chosen from both genders from the public schools in the Lattakia city, The research used the Van Hiele geometry test, and she used Achievement test for writing proofs in Geometry, And logical-mathematical thinking test. The results showed the Van Hiele levels of geometrical reasoning were present distributed at the first fourth levels with varying degrees in secondary school students (the second secondary grade), and There was a strong correlation between the two variables (Van Hiele / Geometric proof) for students, and There is a strong and positive relationship between the two variables(Logical-mathematical thinking / Geometry proof) for students, and There was a strong correlation between the two variables (Logical-mathematical thinking / Van Hiele) for students.
The high traffic density causes traffic congestion on the road, causing delays before it reaches its destination, in addition to the stress and high psychological impact on the driver, it also results in staff and staff being late for work and studen
ts being late for school, With frequent accidents on these busy roads. Congestion has a lot of reasons, one of them is poor infrastructure that leads to a state of congestion, a significant increase in the number of vehicles, a lack of prior information for road users about the traffic situation, Division of traffic management into several departments (Public works, municipality, security, transport…). They become ineffective in some areas, aggressive driving style Which may be an effective factor in creating congestion, in addition to the use of individual transport rather than mass transport. Latakia suffers from a very poor transport system, and the indiscriminate movement of vehicles on its streets. This has been accompanied by increased traffic, which has led to many problems. The most important is the problem of congestion, in terms of increasing the values of delay times in different road sectors. This has contributed to major traffic crises and congestion. It affected service levels on arterial streets in the city's downtown, in the absence of rush-hour studies. Two main streets have been selected in the commercial and downtown center of Latakia City, which is an important arterial street for the distribution of movement. These arterial streets connect the commercial and administrative center of the city with the other parties of the city. The moving controller analyses a large number of actual speeds of the vehicle, measured in each sector, with a view to estimating congestion, calculating its indicators, and determining peak hours. Congestion levels were inferred based on the values of the speed performance index, and the average speeds of daytime and evening peak hours have been mapped to considered street sectors.
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