scholarly journals Study of Optimization of Traffic Congestion at Intersection using BRT Lane (Case Study of Katraj-Swargate BRT Corridor,Pune)

2019 ◽  
pp. 406-412
Author(s):  
Abhishek K. Taware ◽  
Arvind Nadar
Keyword(s):  
Traffic Congestion ◽  
Low Cost ◽  
Traffic Signal ◽  
Light Rail ◽  
Traffic Situation ◽  
Microscopic Simulation ◽  
Average Delay ◽  
Minimal Impact ◽  
Bus Lane ◽  
Motorized Vehicles

Bus Rapid Transit was introduced as a flexible, low-cost alternative to Metro and Light-Rail systems which also aimed at encouraging people to opt for public transport instead of private vehicles. But due to the restriction of right-of-way in the existing road, implementation of BRT system has affected the other lanes. The Motorized vehicle lanes get congested and the total throughput in every direction is affected. Thus, the BRT system needs to be integrated with other modes of transport for optimization of the traffic situation as a whole. This paper presents a study in which the motorized vehicles are given passage into the BRT Lane at a appropriate distance before the intersection taking into account the traffic signal cycle and also the traffic signal used at entry spot of the BRT Lane. VISSIM, a microscopic simulation model is used to investigate the results of the above model and its effects on the traffic situation. It has been observed that if motorized vehicles are allowed on Bus lane at a distance from the intersection, there is an increase in number of vehicle-throughput, average speed, and reduction in average delay time and with minimal impact on the BRT system.

scholarly journals How To Improve Urban Intelligent Traffic? A Case Study Using Traffic Signal Timing Optimization Model Based On Swarm Intelligence Algorithm

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2631
Author(s):  
Xiancheng Fu ◽  
Hengqiang Gao ◽  
Hongjuan Cai ◽  
Zhihao Wang ◽  
Weiming Chen
Keyword(s):  
Traffic Flow ◽  
Optimization Model ◽  
Traffic Congestion ◽  
Delay Time ◽  
Traffic Signal ◽  
Urban Traffic ◽  
Signal Timing ◽  
Average Delay ◽  
Traffic Capacity ◽  
Traffic Signal Timing

Traffic congestion is a major problem in today’s society, and the intersection, as an important hub of urban traffic, is one of the most common places to produce traffic congestion. To alleviate the phenomenon of congestion at urban traffic intersections and relieve the traffic pressure at intersections, this paper takes the traffic flow at intersections as the research object and adopts the swarm intelligent algorithm to establish an optimization model of intersection traffic signal timing, which takes the average delay time of vehicles, the average number of stops of vehicles and the traffic capacity as the evaluation indexes. This model adjusts the intersection traffic signal timing intelligence according to the real-time traffic flow and carries out simulation experiments with MATLAB. Compared with the traditional timing schemes, the average delay time of vehicles is reduced by 10.25%, the average number of stops of vehicles is reduced by 24.55%, and the total traffic capacity of the intersection is increased by 3.56%, which verifies that the scheme proposed in this paper is effective in relieving traffic congestion.

scholarly journals Quality Bus Corridors in Dublin

2002 ◽  
Vol 1791 (1) ◽  
pp. 121-126 ◽  
Author(s):  
Margaret O’Mahony
Keyword(s):  
Traffic Congestion ◽  
Light Rail ◽  
Physical Separation ◽  
New Public ◽  
Road Space ◽  
Bus Lane ◽  
Mode Of Transport ◽  
Transport Problems ◽  
Bus Transport ◽  
Do So

Bus transport in Dublin has been and continues to be perceived as a poor alternative to the car. It is generally seen as the “poor person’s” mode of transport, with many people upgrading to a car as soon as they can afford to do so. The result has been a significant increase in traffic congestion fueled by the recent period of economic growth during which car ownership levels have risen from 238 per 1,000 in 1991 to 350 per 1,000 in 1999. One of the main difficulties facing the state-owned bus company is that buses compete with cars for inadequate road space. In 1995, the Dublin Transportation Initiative proposed a new public transport strategy incorporating light rail transit and what they described as quality bus corridors (QBCs). To date, 9 out of 11 QBCs have been implemented. The characteristics of a QBC include a dedicated lane between 0700 to 1900 in most cases, although some 24-hour bus corridors also exist. Although there is no physical separation between the bus lane and other lanes, enforcement by the police is strict and there is a relatively low level of noncompliance. The QBC concept is described in more detail and the effects since introduction in Dublin are discussed, particularly with regard to travel times, passenger numbers, and reliability of service frequency. Future plans for bus transport in Dublin are mentioned, highlighting the significant contribution buses will be expected to make in solving Dublin’s transport problems.

ANALYSIS OF ECONOMIC ACTIVITY OF REGIONAL AIRPORTS OF FRANCE AND REGIONAL AIRPORTS OF THE CENTRAL FEDERAL DISTRICT: DEVELOPMENT OF LOW-COST AIRLINES DESTINATIONS AS A KEY FACTOR IN THE PASSENGER TRAFFIC GROWTH

2021 ◽  
Vol 1 (195) ◽  
pp. 75-87
Author(s):  
V.V. Rublev ◽  
Keyword(s):  
Low Cost ◽  
Federal District ◽  
Air Transportation ◽  
Minimal Impact ◽  
National Budget ◽  
Passenger Traffic ◽  
Central Federal District ◽  
Route Network ◽  
Key Factor ◽  
Regional Airports

The article presents an analysis of the activities of regional airports in France in 2019. The growth of passenger traffic was observed in those airports that actively developed cooperation with budget airlines, increasing the number of destinations in the route network. Regional airports in France, whose route network structure did not expand in 2019, showed a slight decrease in passenger traffic (from –0.1% to –3%). The first and only experimental regional airport in France (city of Beziers), handling flights of only one budget airline, Ryanair, showed an increase in passenger traffic by 14.5% in 2019. The share of routes of budget airlines in the structure of the route network of regional airports in France is quite high. The key problems of regional airports in Russia are the low passenger traffic and the underdeveloped route network. Due to the presence of the only national budget airline "Pobeda" on the market and the minimal impact on the segment of budget air transportation of foreign airlines, the share of budget air transportation destinations in the structure of regional airports of the Russian Federation continues to remain at an extremely low level. 2019 showed a record growth in passenger traffic at regional airports in the Central Federal District (an increase from +2.8% to +262%, with the exception of Tambov Airport, whose passenger traffic fell by 57.4%), which indicates an increase in demand and the need to expand the route network of regional airports. On the example of the Voronezh airport, a model for the development of low-cost airline destinations is presented.

Parameter Sensitivity Analysis of a Cooperative Dynamic Bus Lane System With Connected Vehicles

2021 ◽  
pp. 036119812110357
Author(s):  
Meng Xie ◽  
Michael Winsor ◽  
Tao Ma ◽  
Andreas Rau ◽  
Fritz Busch ◽  
...  
Keyword(s):  
Travel Time ◽  
Transition Period ◽  
Penetration Rate ◽  
Simulation Models ◽  
Driving Behavior ◽  
Connected Vehicles ◽  
Microscopic Simulation ◽  
Communication Range ◽  
Bus Lane ◽  
The Impact

This paper aims to evaluate the sensitivity of the proposed cooperative dynamic bus lane system with microscopic traffic simulation models. The system creates a flexible bus priority lane that is only activated on demand at an appropriate time with advanced information and communication technologies, which can maximize the use of road space. A decentralized multi-lane cooperative algorithm is developed and implemented in a microscopic simulation environment to coordinate lane changing, gap acceptance, and car-following driving behavior for the connected vehicles (CVs) on the bus lane and the adjacent lanes. The key parameters for the sensitivity study include the penetration rate and communication range of CVs, considering the transition period and gradual uptake of CVs. Multiple scenarios are developed and compared to analyze the impact of key parameters on the system’s performance, such as total saved travel time of all passengers and travel time variation among buses and private vehicles. The microscopic simulation models showed that the cooperative dynamic bus lane system is significantly sensitive to the variations of the penetration rate and the communication range in a congested traffic state. With a CV system and a communication range of 150 m, buses obtain maximum benefits with minimal impacts on private vehicles in the study simulation. The safety concerns induced by cooperative driving behavior are also discussed in this paper.

Smart Traffic Light System

2021 ◽  
Vol 9 (9) ◽  
pp. 679-686
Author(s):  
Rashi Maheshwari
Keyword(s):  
Traffic Congestion ◽  
Traffic Signals ◽  
Traffic Monitoring ◽  
Traffic Signal ◽  
Traffic Signal Control ◽  
Traffic Light ◽  
Mathematical Functions ◽  
Light System ◽  
Smart Traffic ◽  
And Control

Abstract: Traffic signal control frameworks are generally used to monitor and control the progression of cars through the intersection of roads. Moreover, a portable controller device is designed to solve the issue of emergency vehicles stuck in overcrowded roads. The main objective of this paper is to design and implement a suitable algorithm and its simulation for an intelligent traffic signal simulator. The framework created can detect the presence or nonappearance of vehicles within a specific reach by setting appropriate duration for traffic signals to react accordingly. By employing mathematical functions and algorithms to ascertain the suitable timing for the green signal to illuminate, the framework can assist with tackling the issue of traffic congestion. The explanation relies on recent fixed programming time. Keywords: Smart Traffic Light System, Smart City, Traffic Monitoring.

scholarly journals THE TRAFFIC VOLUME AND LEVEL OF SERVICE (LOS) OF UNIVERSITI PUTRA MALAYSIA (UPM) SERDANG CAMPUS MAIN ACCESS

2019 ◽  
Vol 17 ◽  
Author(s):  
Zakiah Ponrahono ◽  
Noorain Mohd Isa ◽  
Ahmad Zaharin Aris ◽  
Rosta Harun
Keyword(s):  
Traffic Flow ◽  
Traffic Congestion ◽  
Noise Pollution ◽  
Traffic Volume ◽  
Level Of Service ◽  
Idle Mode ◽  
The Road ◽  
Road Capacity ◽  
Motorized Vehicles ◽  
University Setting

The inbound and outbound traffic flow characteristic of a campus is an important physical component of overall university setting. The traffic circulation generated may create indirect effects on the environment such as, disturbance to lecturetime when traffic congestion occurs during peak-hours, loss of natural environment and greenery, degradation of the visual environment by improper or illegal parking, air pollution from motorized vehicles either moving or in idle mode due to traffic congestion, noise pollution, energy consumption, land use arrangement and health effects on the community of Universiti Putra Malaysia (UPM) Serdang. A traffic volume and Level of Service (LOS) study is required to facilitate better accessibility and improves the road capacity within the campus area. The purpose of this paper is to highlight the traffic volume and Level of Service of the main access the UPM Serdang campus. A traffic survey was conducted over three (3) weekdays during an active semester to understand the traffic flow pattern. The findings on traffic flow during peak hours are highlighted. The conclusions of on-campus traffic flow patterns are also drawn.

scholarly journals Software-defined Architecture for Urban Regional Traffic Signal Control

2020 ◽  
Vol 32 (2) ◽  
pp. 229-236
Author(s):  
Songhang Chen ◽  
Dan Zhang ◽  
Fenghua Zhu
Keyword(s):  
Traffic Congestion ◽  
Traffic Signal ◽  
Urban Traffic ◽  
Signal Control ◽  
Traffic Signal Control ◽  
The Novel ◽  
Simulation Experiments ◽  
Microscopic Traffic Simulation ◽  
Control Devices ◽  
Innovation Platform

Regional Traffic Signal Control (RTSC) is believed to be a promising approach to alleviate urban traffic congestion. However, the current ecology of RTSC platforms is too closed to meet the needs of urban development, which has also seriously affected their own development. Therefore, the paper proposes virtualizing the traffic signal control devices to create software-defined RTSC systems, which can provide a better innovation platform for coordinated control of urban transportation. The novel architecture for RTSC is presented in detail, and microscopic traffic simulation experiments are designed and conducted to verify the feasibility.

scholarly journals Pilot study to build capacity for family medicine with abbreviated, low-cost training programme with minimal impact on patient care for a cohort of 84 general practitioners caring for Palestinian refugees in Jordan

BMJ Open ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. e028240 ◽  
Author(s):  
Amjad Al Shdaifat ◽  
Therese Zink
Keyword(s):  
Primary Care ◽  
Patient Care ◽  
General Practitioners ◽  
Clinical Skills ◽  
Low Cost ◽  
Training Programme ◽  
Ambulatory Setting ◽  
Secondary Outcome ◽  
Intervention Programme ◽  
Minimal Impact

PurposeStudies document that primary care improves health outcomes and controls costs. In regions of the world where primary care is underdeveloped, building capacity is essential. Most capacity building programmes are expensive and take physicians away from their clinical settings. We describe a programme created, delivered and evaluated from 2013 to 2014 in Jordan.DesignCohort study.SettingPhysicians providing primary care in the United Nations Relief and Works Agency for Palestine Refugees clinics in Jordan.ParticipantsEighty-four general practitioners (GPs) were invited to participate and completed the training and evaluation. GPs are physicians who have a license to practice medicine after completing medical school and a 1 year hospital-based rotating internship. Although GPs provide care in the ambulatory setting, their hospital-based education provides little preparation for delivering ambulatory primary care.Intervention/ProgrammeThis three-stage programme included needs assessment, didactics and on-the-job coaching. First, the learning needs and baseline knowledge of the trainees were assessed and the findings guided curriculum development. During the second stage, 48 hours of didactics covered topics such as communications skills and disease management. The third stage was delivered one on one in the trainee’s clinical setting for a 4 to 6-hour block. The first, middle and final patient interactions were evaluated.Primary and secondary outcome measuresPreknowledge and postknowledge assessments were compared. The clinical checklist, developed for the programme, assessed eight domains of clinical skills such as communication and history taking on a five-point Likert scale during the patient interaction.ResultsPreknowledge and postknowledge assessments demonstrated significantly improved scores, 46% to 81% (p<0.0001). Trainee’s clinical checklist scores improved over the assessment intervals. Satisfaction with the training was high.ConclusionThis programme is a potential model for building primary care capacity at low cost and with little impact on patient care that addresses both knowledge and clinical skills on the job.

Assessing the Existing Bursa Light Rail Transportation System

2020 ◽  
Vol 2674 (10) ◽  
pp. 250-260
Author(s):  
Mehmet Rizelioğlu ◽  
Turan Arslan
Keyword(s):  
Traffic Congestion ◽  
Transportation System ◽  
Transportation Systems ◽  
Bus Rapid Transit ◽  
Light Rail ◽  
Rail Transportation ◽  
Transit System ◽  
Transit Systems ◽  
Negative Impacts

As car ownership soars, traffic congestion and its associated negative impacts have become real concerns in many cities around the world. Therefore, transportation systems that perform better in eliminating or reducing traffic congestion and related problems to tolerable levels have become imperative. Alternative transit systems should be assessed properly to accommodate the expected demand in the long term, at least, to some significant extent. However, this is generally neglected in developing countries and, among many possible alternatives, a popular transportation system is usually preferred within the available budget. As an example, Bursa Metropolitan Municipality, Turkey, has recently implemented a light rail transportation system (LRT) on its major east–west corridor as the main transit system. In this study, the existing LRT is assessed and its performance is compared with a hypothetical bus rapid transit (BRT) system, which is a strong contender and comparatively a lower-cost alternative. This is done to assess whether the LRT was the better choice in relation to the current demand. Therefore, in this study, the existing LRT system is first defined in the PTV VISSIM simulation environment. Then, the hypothetical BRT system is considered on the same route with the current demand. The capability and capacities of the existing LRT and the BRT system are assessed and compared in many aspects. The results are compared, and important findings are outlined.

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