An Approach to Identify Bottlenecks in Road Networks using Travel Time Variations: A Case Study in the City of Colombo and Suburbs

2020 ◽  
Author(s):  
Thisaiveerasingam Thilakshan ◽  
Gayani Rajapaksha ◽  
Saman Bandara
Keyword(s):  
Travel Time ◽  
Road Networks ◽  
Time Variations ◽  
The City

scholarly journals Estimated travel time between the city (Case study: Waru Street-Mojokerto)

2018 ◽  
Vol 181 ◽  
pp. 06004
Author(s):  
S. Waloejo Budi ◽  
Dadang Meru Utomo ◽  
Salsabila W Ninditarari
Keyword(s):  
Land Use ◽  
Travel Time ◽  
Network Performance ◽  
Industrial Area ◽  
Land Use Modeling ◽  
The Road ◽  
On The Road ◽  
The City ◽  
Main Factor

The area in Surabaya and Mojokerto is an industrial area that is increasing quite rapidly. Based on City Mojokerto in Figures Year 2016. From an industrial estate is a change of land use from agriculture or ponds into settlements and / or industries. The occurrence of congestion along this road because of the capacity that is not sufficient to accommodate the number of vehicles passing. The purpose of this research is to know the model of land use interaction, knowing the network performance and know the travel time to be passed. And analyze what components affect the calculation of travel time. Necessary data. The existing land layout along the road and the average traffic calculation data on the road in the study area. To know the travel time must be known in advance the capacity of the road that can be accommodated along the road. After the capacity is known the service performance becomes the main factor in determining road network performance. This research uses regression analysis for land use modeling.

Multi-Objective Optimization for Skip-Stop Strategy Based on Smartcard Data Considering Total Travel Time and Equity

2021 ◽  
pp. 036119812110130
Author(s):  
Sang-Wook Han ◽  
Eun Hak Lee ◽  
Dong-Kyu Kim
Keyword(s):  
Travel Time ◽  
Programming Model ◽  
Mixed Integer ◽  
Average Deviation ◽  
Multi Objective ◽  
Nonlinear Programming Model ◽  
Total Travel Time ◽  
Transfer Stations ◽  
The City

With the rise of urban sprawl, urban railways extend out further to the city’s outer district, installing additional stations. Passengers who travel from the outer district to the center of the city therefore experience long travel times. Although skip-stop strategy helps save total travel time, deviation of travel time among all origin–destination pairs may be increased, leading to equity problems. This study aims to minimize the inequity and total travel time through train stop planning and train scheduling. A coefficient of variation is adopted as a measure of inequity. The problem is formulated as a multi-objective mixed integer nonlinear programming model. Origin–destination demand is extracted from smartcard data and a case study of four urban railway lines in Seoul is conducted. The results indicate that the number of transfer stations for equity-oriented skip-stop strategy is smaller than that for total-travel-time-oriented skip-stop strategy. We also discover that as the number of transfer stations rises, inequity increases and total travel time is reduced. For skip-stop strategy considering total travel time and equity simultaneously, average total travel time and the average deviation are reduced by up to 10.3% and 10.6%, respectively, compared with those of all-stop strategy. We analyze the gradient of Pareto optimal sets to find out which factors (equity or total travel time) are more significant. Skip-stop strategy on lines 5 and 9 can be designed based on equity, while line 4 can be planned based on total travel time.

scholarly journals A Case Study on Roundabout under Congestion: Proposal to Improve Current Traffic Operation

2019 ◽  
Vol 5 (9) ◽  
pp. 2029-2040 ◽  
Author(s):  
Ghufraan Mohammed Aboud ◽  
Areej Muhy Abdulwahab ◽  
Qais Sahib Banyhussan ◽  
Hamsa Abbas Zubaidi
Keyword(s):  
Travel Time ◽  
Co2 Emissions ◽  
Level Of Service ◽  
City Center ◽  
Arterial Streets ◽  
Traffic Volumes ◽  
Reduced Costs ◽  
Traffic Operation ◽  
The City

Roundabouts are progressively being utilized on occupied arterial streets for traffic quieting purposes. Be that as it may, on the off chance that one indirect leg is close to a conveyance center point, for instance, stopping territories of strip malls, the passage traffic volumes will be especially high in pinnacle hours. On the basis of the Al-Turkman Roundabout, which is one of the most important roundabouts in Baghdad city, linking the areas of east of Baghdad to the city center in the area of Bab Al-Moatham. This area is characterized by its high traffic volumes (congestion), especially at peak periods causing a low level of service (LOS) with increased travel time delay, costs, and CO2 emissions. The research relied on the use of the SIDRA software to assess these variables by collecting traffic volumes in this area. The research proposed a series of planning procedures which are divided according to serial time scales. These planning procedures are to address the problem of congestion and traffic jams in the area, improve the level of service, and reduce travel time, cost and CO2 emissions. The research concluded that the application of the planning proposals in the study area has improved the level of service from E and F to C, reduced travel time by 16%, reduced costs by 25% and reduced CO2 emissions by 29%.

scholarly journals Simulation-Based Public Transport Priority Tailored to Passenger Conflict Flows: A Case Study of the City of Zagreb

2021 ◽  
Vol 11 (11) ◽  
pp. 4820
Author(s):  
Luka Novačko ◽  
Karlo Babojelić ◽  
Luka Dedić ◽  
Tomislav Rožić
Keyword(s):  
Travel Time ◽  
Public Transport ◽  
Passenger Cars ◽  
Peak Period ◽  
Effective Measure ◽  
Traffic Lane ◽  
Simulation Based ◽  
Passenger Flows ◽  
The City

Prioritizing public transport is one of the most effective measure to increase the attractiveness and competitiveness of public transport in relation to individual vehicles. The main goal of this study was to examine the possibilities for reducing the travel time of tram vehicles by giving priority at signalized intersections in terms of sharing the traffic lane with personal vehicles and under conditions of strong conflict flows with private transport. For this purpose, we used the simulation tool VISSIM and its module EPICS. A methodology for determining weighting factors for prioritizing public transport flows was developed based on conflicting passenger flows in public transport vehicles and passenger cars. Three scenarios were tested in the study area: (1) “do nothing”; (2) unconditional priority; and (3) conditional priority. The results showed that unconditional priority led to unsustainable traffic conditions for personal vehicles and public transport. In contrast, conditional priority reduced the travel time of public transport on certain corridors by between 7.64% and 18.76% in the morning peak period, and 5.60% to 22.50% in the afternoon peak period.

scholarly journals Saving Travel Time as an Urban Planning Instrument. Case Study: Manizales, Colombia

2018 ◽  
Vol 12 (6) ◽  
pp. 44 ◽  
Author(s):  
Carlos Alberto Moncada ◽  
Santiago Cardona ◽  
Diego Alexander Escobar
Keyword(s):  
Travel Time ◽  
Direct Influence ◽  
Urban Mobility ◽  
Road Infrastructure ◽  
Urban Road ◽  
The Road ◽  
Average Travel Time ◽  
Future Situation ◽  
The City

This research explores the benefits of a proposal for urban road infrastructure which aims to improve road connection between northwest and western neighborhoods of the city of Manizales, Colombia, as well as to expand the ring of urban mobility that runs through the city. By calculating the global average accessibility and comparing the current and future situation, by averages of savings gradient, timesaving generated by this alternative are obtained in terms of average travel time. There is evidenced that suggest the road infrastructure proposal would generate savings in the average travel times for the entire city, especially to the neighborhoods located in the area of direct influence.

scholarly journals Multisource Data Framework for Road Traffic State Estimation

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Josep Maria Salanova Grau ◽  
Evangelos Mitsakis ◽  
Panagiotis Tzenos ◽  
Iraklis Stamos ◽  
Luigi Selmi ◽  
...  
Keyword(s):  
Road Traffic ◽  
Road Networks ◽  
Added Value ◽  
Short Term ◽  
The Road ◽  
Data Framework ◽  
Traffic Volumes ◽  
Short Term Forecasting ◽  
The City

This paper presents a framework for data collection, filtering, and fusion, together with a set of operational tools to validate, analyze, utilize, and highlight the added value of probe data. Data is collected by both conventional (loops, radars, and cameras) and innovative (Floating Car Data, detectors of Bluetooth devices) technologies and refers to travel times and traffic flows on road networks. The city of Thessaloniki, Greece, serves as a case study for the implementation of the proposed framework. The methodology includes the estimation of traffic flow based on measured travel time along predefined routes and short-term forecasting of traffic volumes and their spatial expansion in the road network. The proposed processes and the framework itself have the potential of being implemented in urban road networks.

New Model of Travel-Time Prediction Considering Weather Conditions: Case Study of Urban Expressway

2021 ◽  
Vol 147 (3) ◽  
pp. 04020161
Author(s):  
Huamin Li ◽  
Qingqing Wang ◽  
Weixin Xiong
Keyword(s):  
Travel Time ◽  
Weather Conditions ◽  
Travel Time Prediction ◽  
New Model ◽  
Time Prediction ◽  
Urban Expressway

Study of Interior Materials as Passive Fire Protection in Karaoke Building (Case Study: Masterpiece Signature Family KTV Medan)

2020 ◽  
Vol 4 (1) ◽  
pp. 30-43
Author(s):  
Saras Ayu Faradita ◽  
Vinky Rahman
Keyword(s):  
Fire Protection ◽  
Analytical Hierarchy Process ◽  
Passive Protection ◽  
Fire Incident ◽  
Fire Disaster ◽  
Passive Fire Protection ◽  
Protection Systems ◽  
Hierarchy Process ◽  
The City

The fire incident in karaoke buildings in Indonesia which claimed many lives has occurred several times. According to the National Academy of Science US, the smoke toxins that come out of the fire disaster cause 50-80% of deaths. Refers to the data, it is necessary to check further about the building material response to fire during a fire incident. Masterpiece Signature Karaoke is a karaoke building that classified as large and magnificent in the city of Medan which has various material so that it is necessary to study the interior material as passive fire protection. The purpose is to find out how to assess the reliability of fire passive protection regard to the interior materials and recommendations or descriptions of right interior material planning using the Analytical Hierarchy Process (AHP). This method is efficacious to solve the problem of reliability in using interior materials as passive fire protection in Masterpiece Signature Family KTV Medan building with the results of an Adequate Level of reliability. Then, design recommendations were given for the use of interior materials in karaoke building to improve the reliability results to be better.The results are useful as information for other researchers and karaoke buildings regarding passive fire protection systems at the Masterpiece Signature Family KTV Medan.

Emplacing Berlin: Digital Itineraries and Short-term Study Abroad in the City

2018 ◽  
Vol 12 (1) ◽  
pp. 26-36 ◽  
Author(s):  
Richard B. Apgar
Keyword(s):  
Study Abroad ◽  
Urban Landscape ◽  
Physical Space ◽  
Short Term ◽  
Study Abroad Programs ◽  
Term Study ◽  
Digital Maps ◽  
Short Term Study ◽  
The City

As destination of choice for many short-term study abroad programs, Berlin offers students of German language, culture and history a number of sites richly layered with significance. The complexities of these sites and the competing narratives that surround them are difficult for students to grasp in a condensed period of time. Using approaches from the spatial humanities, this article offers a case study for enhancing student learning through the creation of digital maps and itineraries in a campus-based course for subsequent use during a three-week program in Berlin. In particular, the concept of deep mapping is discussed as a means of augmenting understanding of the city and its history from a narrative across time to a narrative across the physical space of the city. As itineraries, these course-based projects were replicated on site. In moving from the digital environment to the urban landscape, this article concludes by noting meanings uncovered and narratives formed as we moved through the physical space of the city.

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