Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userEvaluation multi-measures of traffic performance for two- way, two- lane rural roads
تقييم متعدد المعايير للأداء المروري للطرق الريفية بحارتين باتجاهين
937
0 27
0
(
0
)
Created by
Shamra Editor
Ask ChatGPT about the research
تشكل الطرق الريفية قسماً كبيراً من شبكة الطرق الموجودة خارج المدن و خاصةً تلك المكوّنة من حارتين باتجاهين، و يعتبر تقييم الأداء المروري للطرق الريفية بحارتين باتجاهين عملية معقدة بسبب الخصائص التي تتميز بها هذه الطرق، حيث تم ادخال العديد من معايير الأداء من قبل العديد من الباحثين لتناسب الظروف المحلية لبلدانهم. قدّم هذا البحث تقييم عملي للعلاقة بين الأداء التشغيلي و ظاهرة تشكل الرتل على الطرق الريفية بحارتين باتجاهين في محافظة طرطوس. تم تحديد و حساب ستة معايير للأداء و ثلاثة متغيرات لتشكل الرتل و ذلك لعشرة مواقع باستخدام بيانات المرور من الطرق الريفية في منطقة الشيخ بدر في محافظة طرطوس، حيث تمت دراسة الترابط بين معايير الأداء و متغيرات تشكل الرتل باستخدام التحليل البياني و الإحصائي. كما تم فحص متغيرات تشكل الرتل و وجد بأنّ الغزارة بالاتجاه المباشر (اتجاه الحركة) لها الارتباط الأقوى مع معايير الأداء، و أكدت النتائج الإجمالية أن كثافة التتابع هو المعيار الأكثر توصيفاً للعلاقة بين الأداء المروري و بين تشكل الرتل و يعد مناسباً لدراسة الأداء التشغيلي.
The rural roads are a large part of the existing roads network, particularly that consisting of two-lane. Evaluation of traffic performance for two-way, two-lane rural roads is complex process due to their characteristics. Many performance measures were introduced by many authors in many countries to fit the local conditions. This research presents an empirical evaluation of the relationship between operational performance and platooning phenomenon in rural two-lane roads in Tartous. Six performance measures and three platooning variables were defined and calculated for ten study sites using traffic data from rural roads in Ash-Shaykh Badr region of Tartous governorate. Using graphical and statistical analyses, the associations between the performance measures and the platooning variables were examined. The platooning variables investigated, traffic flow in the direction of travel has the highest correlations with performance measures. As the overall findings confirmed that the follower density is the most characterization of the relationship between traffic performance and platooning, which is suitable for the study of operational performance.
References used
DURBIN, C. Traffic performance on two-lane, two-way highways: Examination of new analytical approaches. Montana state university, Bozeman, Montana, June, 2006, 7-15
HASHIM, I; ABDEL-WAHED,T. Evaluation of performance measures for rural two-lane roads in Egypt. Alexandria Engineering Journal 50, Egypt, 2011, 245– 255
KARJAL, S. R. Estimating Quality Of Traffic Flow On Two-Lane Highways. Montana State University Bozeman, Montana , July 2008, 1-8
rate research
Read More
Most of the villages and rural communities are suffering, particularly in Tartous
region, of poor organization of transport and serve the people. Therefore the movement
between rural and city become a great suffering for most people.
This research
presents an evaluation the quality of public transport on rural transport
network based on a set of indicators and quantitative criteria that show us the case or the
quality of rural transport, And it identify the most effective and appropriate criteria to the
evaluation operation. In addition, take procedure to increase the effectiveness of service
performance.
This study was conducted on Tartous- Al dreikish axis which passes in steep
mountainous area in some areas is what makes the subject of improving the performance of
the public transport system on this axis is an important issue contribute to facilitate the
traffic and transport, and reducing accidents on the many junctions. In this research will be
to provide analysis, draw conclusions and make suggestions to the problem in this study.
The research was conducted at the Maize Researches Department, General
Commission for Scientific Agriculture Researches (G.C.S.A.R.) Damascus,
Syria during the summer growing seasons of 2010, 2011 and 2012. Treatments
were arranged in a Randomized
Complete Blocks Design with three
replications. The research aimed to evaluate genetic parameters for some traits
like days to 50% silking, plant and ear height, ear length, ear diameter, number
of rows per ear, number of kernels per row, 100 kernel weight and grain yield
per plant using generations means analysis of two maize hybrids (IL.292-06 ×
IL.565-06, IL.459-06 × IL.362-06) to detect epistasis and estimates of mean
effect [m], additive [d], dominance [h], additive × additive [i], additive ×
dominance [j] and dominance × dominance [l] parameters. Results showed that
the additive - dominance model was adequate to demonstrate the genetic
variation and its importance in the inheritance of most studied traits. Nonallelic
gene interaction was operating in the control of genetic variation in most
studied traits. The signs of [h] and [l] were opposite in most studied traits for
the two crosses. Also, the inheritance of all studied traits was controlled by
additive and non-additive genetic effects, but dominance gene effects play the
major role in controlling the genetic variation of the most studied traits,
suggesting that the improvement of those characters need intensive selection
through later generations. The phenotypic variations were greater than
genotypic variations for all studied traits in the two crosses, indicating greater
influence of environment in the expression of these traits. Highly significant
heterosis relative to mid and better parents, respectively was found for all
characters, and this accompanied with inbreeding depression for all traits.
Narrow sense heritability and genetic advance were low in most of the traits
due to the dominance of non-additive gene action in controlling the genetic
variation of the most studied traits and this predict low to medium values of
genetic advance through selection process.
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.
This paper aims to, in through scientific analysis mythology
supported by practical samples.
Knowing the used classification in the countries of the world,
including the distinguish between country and city, or between
rural settlements and focus
ing the classification that concerning the
planners during establishing strategies for rural regions.
This paper conclude to analyze the used classification criteria in
order to reach a planning classification that could support
classifying the Syrian villages which have mountainous nature, and
defiantly a different classification of the usual used classification.
The aim of this search was to compare two Laparotomy (Flank And mid
ventral). Twelve (n=10) apparently healthy goat of native breed and different
sex.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
