scholarly journals Integrating road carrying capacity and traffic congestion into the excess commuting framework: The case of Los Angeles

2018 ◽  
Vol 47 (1) ◽  
pp. 119-137 ◽  
Author(s):  
Jiangping Zhou ◽  
Enda Murphy ◽  
Jonathan Corcoran
Keyword(s):  
Los Angeles ◽  
Public Transport ◽  
Carrying Capacity ◽  
Traffic Congestion ◽  
Conceptual Development ◽  
High Quality ◽  
Excess Commuting ◽  
Commute Distance

The excess commuting framework has advanced a series of metrics through which a city or a region’s jobs-housing balance and commuting efficiency can be measured. This study seeks to add to the conceptual development and extension of the excess commuting framework. Specifically, it considers the carrying capacity (of links) and related congestion issues in the excess commuting framework and demonstrates that overlooking these characteristics has important implications for excess commuting metrics. Drawing on an empirical case study, it shows that when carrying capacity and traffic congestion are accounted for, the observed commute is longer than otherwise. Excess commuting tends to be higher than its counterparts in previous excess commuting studies. The findings suggest that future excess commuting studies should take account of carrying capacity and congestion in determining excess commuting metrics. Moreover, high-quality connections (preferably via public transport) between jobs and housing allied with sufficient carrying capacity of popular links/routes for commuters are crucial preconditions for cities and regions to harvest the full benefits of jobs-housing balance policies targeted at the reduction of the average commute distance and vehicle miles travelled.

Research on the Public Transport Integration of Major Western Region Cities – A Case Study on Bus Connection with Subway Line 6 in Chonqing

2012 ◽  
Vol 610-613 ◽  
pp. 3809-3813
Author(s):  
Ling Hong Wei ◽  
Hong Yang Wu ◽  
Huan Li
Keyword(s):  
Public Transport ◽  
Network Optimization ◽  
Public Transportation ◽  
Traffic Congestion ◽  
Theoretical Foundation ◽  
Optimization Theory ◽  
The Public ◽  
Urban Public Transport ◽  
Passenger Volume

The major western cities of China are beginning to suffer the growing traffic congestion problems, which eastern cities of China has experienced. Learn lessons from eastern cities on traffic issues as soon as possible, dealing with the diversified modes of public transportation problem of convergence effectively, providing condition for integration development of urban public transport in the west is the main goal in this paper. This paper takes Subway transit Line 6 in Chongqing as a bus connection example. On the basis of passenger volume forecast, integrated public transport optimization theory and method are used to study Chongqing subway transit Line 6 along the feeder site optimization program , it can provide the theoretical foundation and technical support for the public transport network optimization of Chongqing.

scholarly journals Analyzing Public Transportation Plans to Addressing Traffic Congestions in Developing Countries

2019 ◽  
Vol 18 (1) ◽  
pp. 44-57
Author(s):  
Hussaen Ali Hasan Kahachi
Keyword(s):  
Developing Countries ◽  
Public Transport ◽  
Public Transportation ◽  
Traffic Congestion ◽  
Well Being ◽  
Transport Services ◽  
Greater Cairo ◽  
The City ◽  
Privately Owned

Traffic congestions is one of the main problems for many cities especially in newly urbanizing countries worldwide. The issue of traffic congestions has major impact not only on the planning of the city, but also on many aspects such as residence overall well-being. Governments often try to address this issue through a number of initiatives, most important of which is promoting public transport in order to reduce the dependency on private cars in the city. This research analyzed state-led public transportation initiatives impact on addressing traffic congestion in developing countries through a case study of the Greater Cairo Region in Egypt. The research specifically focused on two state-led public transportation programs, namely the Great Cairo Transport Authority (CTA) program to improve the existing public transport services in GCR and the GCR underground metro program during the 1990s to early 2010s. The research found that although these programs were successful in limiting the increase of privately owned cars and taxies in GCR, they did not decrease traffic congestions due to a number of issues including malpractice, political and administrative corruption, and rapid population growth and increased population densities that almost doubled in the period from early 1990s to early 2010s.

ALTERNATIVES TO AUTOMATED PEOPLE‐MOVER SYSTEMS FOR SMALL BUT DENSE POPULATED AREAS

2009 ◽  
Vol 15 (1) ◽  
pp. 90-101 ◽  
Author(s):  
Milena Scherer ◽  
Jost Wichser ◽  
Jūratė Venckauskaitė
Keyword(s):  
Transport System ◽  
Public Transport ◽  
New Technology ◽  
High Quality ◽  
Transport Planning ◽  
Public Transport System ◽  
Technical Requirements ◽  
New Public ◽  
Automated People Mover

This paper describes the operational and technical requirements for a high quality public transport system in the country of Liechtenstein and is based on a study conducted by the Institute for Transport Planning and Systems (IVT) at the ETH Zurich. In this case study, a new public transport system (NPT) is defined as a new guideway transport system introduced in a region where this system does not exist yet. Often there are forms of a new technology, for instance, an automated people mover or a modern tramway. Some of the surveyed NPTs are not introduced in many places. The Liechtenstein case study made it possible to analyze, why these systems have not been successful than expected and what is the most appropriate way to introduce a NPT in this country. Santrauka Aprašomas poreikis sukurti aukštos kokybes viešojo transporto sistemą Lichtenšteino kunigaikštystėje. Remiamasi Ciuricho planavimo ir transporto sistemų instituto parengta studija. Šiame tiriamajame darbe pasiūlyta nauja viešojo transporto sistema. Dažnai naujos technologijos sistemos suprantamos kaip automatizuotas transportas, pvz., modernus tramvajus. Lichtenšteino studija parode, kodėl ne visos naujos transporto sistemos sėkmingos, kaip tikimasi. Studijoje pasiūlytas priimtiniausias naujos Lichtenšteino viešojo transporto sistemos būdas.

Analyzing Traffic Impacts of Planned Major Events

2021 ◽  
pp. 036119812199871
Author(s):  
Genevieve Giuliano ◽  
Yougeng Lu
Keyword(s):  
Los Angeles ◽  
Traffic Congestion ◽  
Temporal Correlation ◽  
Time Interval ◽  
University Of Southern California ◽  
Start Time ◽  
Arterial Traffic ◽  
Traffic Impacts ◽  
High Level

Major events are a significant source of traffic congestion, especially in large metropolitan areas. This paper presents a case study of football games played at the Los Angeles Memorial Coliseum, a venue near downtown Los Angeles, California, with a capacity of about 80,000. Two teams play home games at the Coliseum: the Los Angeles Rams and the University of Southern California (USC) Trojans. These events take place in an area that has a high level of recurrent congestion. The traffic impacts of game days are analyzed by comparing game day traffic with traffic on control days on both the highway and arterial systems. The data include speed records from in-road detectors. Two sets of models are estimated to test relationships between game attributes and traffic performance. The first set is traditional regression models controlling for spatial and temporal correlation. The second set is random forest (RF), a type of machine learning estimation. RF is found to perform better, as it allows for complex non-linearities in variables. The results show that Rams and USC impacts are different. Rams fans arrive in a more concentrated time interval closer to the start time of games and, therefore, have a greater impact on the major approach routes than USC fans. The greatest impacts on highways are around nearby freeway-to-freeway interchanges. Arterial traffic is more consistently affected by distance from the venue. This case study provides the basis for better management of major planned events.

scholarly journals Analyzing Public Transportation Plans to Addressing Traffic Congestions in Developing Countries

2019 ◽  
Vol 18 (1) ◽  
pp. 44-57
Author(s):  
Hussaen Ali Hasan Kahachi
Keyword(s):  
Developing Countries ◽  
Public Transport ◽  
Public Transportation ◽  
Traffic Congestion ◽  
Well Being ◽  
Transport Services ◽  
Greater Cairo ◽  
The City ◽  
Privately Owned

Traffic congestions is one of the main problems for many cities especially in newly urbanizing countries worldwide. The issue of traffic congestions has major impact not only on the planning of the city, but also on many aspects such as residence overall well-being. Governments often try to address this issue through a number of initiatives, most important of which is promoting public transport in order to reduce the dependency on private cars in the city. This research analyzed state-led public transportation initiatives impact on addressing traffic congestion in developing countries through a case study of the Greater Cairo Region in Egypt. The research specifically focused on two state-led public transportation programs, namely the Great Cairo Transport Authority (CTA) program to improve the existing public transport services in GCR and the GCR underground metro program during the 1990s to early 2010s. The research found that although these programs were successful in limiting the increase of privately owned cars and taxies in GCR, they did not decrease traffic congestions due to a number of issues including malpractice, political and administrative corruption, and rapid population growth and increased population densities that almost doubled in the period from early 1990s to early 2010s.

scholarly journals Exploring Benefits of Cargo-Cycles versus Trucks for Urban Parcel Delivery under Different Demand Scenarios

2020 ◽  
Vol 2674 (5) ◽  
pp. 553-562
Author(s):  
Giacomo Dalla Chiara ◽  
André Romano Alho ◽  
Cheng Cheng ◽  
Moshe Ben-Akiva ◽  
Lynette Cheah
Keyword(s):  
Carrying Capacity ◽  
Traffic Congestion ◽  
Urban Areas ◽  
Past Research ◽  
Contributing Factors ◽  
Demand Characteristics ◽  
Limited Perspective ◽  
Potential Benefits ◽  
Using Data

Urban deliveries are traditionally carried out with vans or trucks. These vehicles tend to face parking difficulties in dense urban areas, leading to traffic congestion. Smaller and nimbler vehicles by design, such as cargo-cycles, struggle to compete in distance range and carrying capacity. However, a system of cargo-cycles complemented with strategically located cargo-storing hubs can overcome some limitations of the cargo-cycles. Past research provides a limited perspective on how demand characteristics and parking conditions in urban areas are related to potential benefits of this system. To fill this gap, we propose a model to simulate the performance of different operational scenarios—a truck-only scenario and a cargo-cycle with mobile hubs scenario—under different delivery demand and parking conditions. We apply the model to a case study using data synthesized from observed freight-carrier demand in Singapore. The exploration of alternative demand scenarios informs how demand characteristics influence the viability of the solution. Furthermore, a sensitivity analysis clarifies the contributing factors to the demonstrated results. The combination of cargo-cycles and hubs can achieve progressive reductions in kilometers-traveled and hours-traveled up to around densities of 150 deliveries/km2, beyond which savings taper off. Whereas the reduction in kilometers-traveled is influenced by the the carrying capacity of the cargo-cycle, the reduction in hours-traveled is related to to the cargo-cycle ability to effectively decrease the parking dwell time by reducing, for instance, the time spent searching for parking and the time spent walking to a delivery destination.

Sign in / Sign up

Export Citation Format

Share Document