scholarly journals Genetic Algorithm for Multiple Bus Line Coordination on Urban Arterial

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Zhen Yang ◽  
Wei Wang ◽  
Shuyan Chen ◽  
Haoyang Ding ◽  
Xiaowei Li
Keyword(s):  
Genetic Algorithm ◽  
Travel Time ◽  
Public Transport ◽  
Major Part ◽  
Traffic Signals ◽  
Traffic Efficiency ◽  
Road Section ◽  
Bus Travel Time ◽  
The City ◽  
Urban Arterial

Bus travel time on road section is defined and analyzed with the effect of multiple bus lines. An analytical model is formulated to calculate the total red time a bus encounters when travelling along the arterial. Genetic algorithm is used to optimize the offset scheme of traffic signals to minimize the total red time that all bus lines encounter in two directions of the arterial. The model and algorithm are applied to the major part ofZhongshan NorthStreet in the city of Nanjing. The results show that the methods in this paper can reduce total red time of all the bus lines by 31.9% on the object arterial and thus improve the traffic efficiency of the whole arterial and promote public transport priority.

scholarly journals Accessibility to park in Łódź in view of individual transport, public transport and cycling

2018 ◽  
Vol 2018 (2) ◽  
pp. 10-21 ◽  
Author(s):  
Marta Borowska-Stefańska ◽  
Szymon Wiśniewski
Keyword(s):  
Population Density ◽  
Travel Time ◽  
Public Transport ◽  
Small Area ◽  
Spatial Accessibility ◽  
City Center ◽  
The City

In this article, the goal was to assess spatial accessibility to the parks in Łódż for example of cycling, individual transport and public transport. Parks represent basic units of recreational greenery in the city. (Czerwieniec, Lewińska 2000). In Łódź are 43 parks, which are located mainly in the rail peripheral or right behind her (Jakóbczyk-Gryszkiewicz 2008). To determine the spatial accessibility to the parks in the analyzed city, were calculated the number and percentage of the population, which living in 2016 in isochrones: 0-5; 5-10; 10-15; 15-20; 20-25; 25-30 minutes from the parks. In the study were taken into account the different means of transport - car, bicycle and public. It was found that the most beneficial for the residents of the city is by bike. In the case of 3/4 of the population of Łódż travel time by bike to the park is less than 5 minutes. Bicycle and public transport provide access to the parks, the vast majority of inhabitants of the city in time to 5 minutes, while individual transport in time 5-10 minutes. Most preferably, due to the accessibility for the residents of the city, are located parks in the city center, and behind its borders, in turn, within the rail perimeter. Over there the population density is greatest, unfortunately, a small area of parks.

scholarly journals Evaluating accessibility of small communities via public transit

2020 ◽  
Vol 56 (4) ◽  
pp. 59-72
Author(s):  
Antonio Danesi ◽  
Simone Tengattini
Keyword(s):  
Travel Time ◽  
Public Transport ◽  
Public Transit ◽  
Time Of Day ◽  
Educational Work ◽  
Small Communities ◽  
Schedule Delay ◽  
Total Travel Time ◽  
Travel Impedance ◽  
The City

Accessibility to and from urban centres allows small communities’ dwellers to participate in primary activities and use essential services that are not available on-site, such as educational, work and medical services. Public transport networks are supposed to enhance accessibility and pursue equity principles, overcoming socio-economical differences among people that can exacerbate during crisis. In this paper a methodology is proposed and implemented to assess small communities’ accessibility via public transit. A metric is defined based on the calculation of total travel time, taken as a proxy of travel impedance, with consideration of in-vehicle time, schedule delay and users’ arrival and departure preference curves (i.e. time-of-day functions). A “rooftops” model is specified and implemented under the assumption that travellers cannot accept (scheduled) late arrival or early departure time penalties before and after the participation in their activities in the main urban centre, as many activities rarely admit time-flexibility. Also, a public transport specific impedance factor (PTSIF) is proposed, in order to account for travel impedance determinants, which are a consequence of service scheduling and routing decisions and not due to inherent geographical and infrastructural disadvantages affecting car users too. An application of the methodology for the city of Cesena, Italy, and 90 surrounding small communities is presented. The city is served by train and bus services. Assessment of small communities' accessibility based on both total travel time and PTSIF is presented and discussed. This practice-ready quantitative method can help transport professionals to evaluate impacts on small communities’ accessibility in light of public transport service changes or reduction. Quantitative approach to support strategic decisions is needed, for example, both to assess public transport strengthening politics against depopulation of rural and marginal mountainous areas and to mitigate the effects of possible increasing concentration of services towards high-demand lines, which may follow as a consequence of budget cuts or contingencies, such as vehicle capacity reductions required by sanitary emergencies.

scholarly journals Introducing a Navigation Algorithm for Reducing the Spread of Diseases in Public Transport Networks

2021 ◽  
Author(s):  
Jens Klinker ◽  
Mohamed Hechem Selmi ◽  
Mariana Avezum ◽  
Stephan Jonas
Keyword(s):  
Travel Time ◽  
Public Transport ◽  
Public Transportation ◽  
Urban Traffic ◽  
Planning Problem ◽  
Navigation Algorithm ◽  
Urban Public Transport ◽  
Flow Through ◽  
The Impact ◽  
The City

Reducing passenger flow through highly frequented bottlenecks in public transportation networks is a well-known urban planning problem. This issue has become even more relevant since the outbreak of the SARS-CoV-2 pandemic and the necessity for minimum distances between passengers. We propose an approach that allows to dynamically navigate passengers around dangerously crowded stations to better distribute the passenger load across an entire urban public transport network. This is achieved through the introduction of new constraints into routing requests, that enable the avoidance of specific nodes in a network. These requests consider walks, bikes, metros, subways, trams and buses as possible modes of transportation. An implementation of the approach is provided in cooperation with the Munich Travel Corporation (MVG) for the city of Munich, to simulate the effects on a real city’s urban traffic flow. Among other factors, the impact on the travel time was simulated given that the two major exchange points in the network were to be avoided. With an increase from 26.5 to 26.8 minutes on the average travel time, the simulation suggests that the time penalty might be worth the safety benefits.

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 The congestion relief benefit of public transit: evidence from Rome

2020 ◽  
Author(s):  
Martin W Adler ◽  
Federica Liberini ◽  
Antonio Russo ◽  
Jos N van Ommeren
Keyword(s):  
Travel Time ◽  
Public Transport ◽  
Motor Vehicle ◽  
Public Transit ◽  
Experimental Methodology ◽  
Motor Vehicles ◽  
Point Reduction ◽  
Quasi Experimental ◽  
Bus Travel Time ◽  
Public Transport Service

Abstract We estimate the effect of public transport supply on travel times of motor-vehicle and bus users in Rome, Italy. We apply a quasi-experimental methodology exploiting hourly information on public transport service reductions during strikes. We find that a 10-percentage point reduction in public transit supply increases the travel time of motor-vehicles by about 1.6% in the morning peak. The effect on bus travel time is similar. The congestion-relief benefit of public transport is thus sizeable and bus travel time gains account for an important share of it.

scholarly journals Violence in Public Transport: An Analysis of Resilience and Vulnerability in the City of Rio de Janeiro

2021 ◽  
Vol 13 ◽  
Author(s):  
Marcus Hugo Sant'Anna Cardoso ◽  
Tálita Floriano Santos ◽  
Marcelino Aurélio Vieira da Silva
Keyword(s):  
Travel Time ◽  
Public Transport ◽  
Public Transportation ◽  
Spatial Dependence ◽  
Rio De Janeiro ◽  
Public Security ◽  
Dependence Relation ◽  
The City ◽  
Intervening Opportunities

Abstract Indicators of violence involving public transportation have reached alarming levels in most Brazilian states, hampering mobility. This article aims to identify the level of vulnerability and resilience of public transportation in 21 administrative regions of the city of Rio de Janeiro, in light of criminal occurrences. Variables related to population, employment, intervening opportunities, travel time, criminal occurrences associated with public transportation and police coverage of each evaluated region were used. The results indicated that the five most vulnerable regions are Campo Grande, Méier, Barra da Tijuca, Rio Comprido and Irajá, and the most resilient are Lagoa, Copacabana, Botafogo, Vila Isabel and Tijuca. The contribution of this work is the proposal to analyze the level of vulnerability and resilience based on public security data, with emphasis on the spatial dependence relation among the regions.

scholarly journals Potential and cumulative accessibility of workplaces by public transport in Szczecin

2020 ◽  
Vol 50 (50) ◽  
pp. 133-146
Author(s):  
Sławomir Goliszek ◽  
Marcin Połom ◽  
Patryk Duma
Keyword(s):  
Labour Market ◽  
Travel Time ◽  
Research Methods ◽  
Public Transport ◽  
Transport Model ◽  
The Other ◽  
Travel Times ◽  
The Public ◽  
Other Hand ◽  
The City

AbstractThe article presents the accessibility of workplaces in Szczecin using the method of potential and cumulative accessibility for commuting by public transport. The public transport commuting times used in the study were generated using the public transport model, which was developed based on data in the General Transit Feed Specification (GTFS) format. The results of potential accessibility by public transport were calculated for several selected time thresholds in the morning rush hours between 7 a.m. and 9 a.m.. On the other hand, cumulative accessibility is characterised by variability of travel times for 8 a.m., which is calculated in 10- to 60-minute intervals of travel time. The aim of this study is to identify workplaces in Szczecin that are situated in areas where accessibility is more dependent on the parameters of the public-transport timetable. In addition, a possibility to define the optimal journey length was assumed so that it would regard the largest number of jobs. The use of the two indicated research methods for the accessibility of workplaces in Szczecin provides a result in the form of better- and less-accessible areas of the city as regards the labour market. The results regarding the accessibility of workplaces using the two methods identify places of increased demand for commuting by public transport during the morning rush hours.

THE DEVELOPMENT AND SYSTEMATIC STUDY OF THE PROGRAM OF MEASURES ON IMPROVEMENT OF ORGANIZATION OF TRANSPORT SERVICE OF THE POPULATION IN THE METROPOLIS

2020 ◽  
Vol 4 (26) ◽  
pp. 91-95
Author(s):  
D. A. Smirnov ◽  
Keyword(s):  
Transport System ◽  
Systematic Study ◽  
Public Transport ◽  
Road Network ◽  
System Development ◽  
Transport Service ◽  
Transport Services ◽  
The City

The article reveals the content of measures to improve the organization of transport services in the metropolis. The key directions of the city transport system development are considered. The analysis of the offered offers is carried out. Keywords: metropolis, transport development, public transport, street and road network.

Sign in / Sign up

Export Citation Format

Share Document