Assessing Impact of Bus Traffic on Pavement Maintenance Costs: City of Los Angeles

2003 ◽  
Vol 1853 (1) ◽  
pp. 29-36
Author(s):  
M. Y. Shahin ◽  
James A. Crovetti ◽  
Kurt A. Keifer
Keyword(s):  
Los Angeles ◽  
State Of The Art ◽  
Maintenance Cost ◽  
Maintenance Costs ◽  
Pavement Condition ◽  
Pavement Maintenance ◽  
The Impact ◽  
The City ◽  
Evaluation Techniques

Engineers for the city of Los Angeles have observed that lanes carrying Mass Transit Authority (MTA) bus traffic deteriorate at a faster rate than similar lanes without bus traffic. The increased rate of deterioration results in greater maintenance costs in these lanes. To properly apportion the increased maintenance costs, city engineers need an objective method for quantifying the impact of MTA bus traffic. Multiple evaluation techniques are presented that may be used to quantify the effect of buses in terms of increased deterioration rates and greater rehabilitation costs. State-of-the-art techniques that use the results of deflection testing and pavement condition surveys are presented. Data collection procedures, methods for condition and structural analyses, and life-cycle costing procedures are provided. A case study that uses data collected from the city is presented. This study indicates an average yearly additional maintenance cost of $800 per lane-mile caused by MTA bus traffic, excluding associated costs for curb and gutter or maintenance hole adjustments.

scholarly journals AN INTEGRATED MULTI-OBJECTIVES OPTIMIZATION APPROACH ON MODELLING PAVEMENT MAINTENANCE STRATEGIES FOR PAVEMENT SUSTAINABILITY

2020 ◽  
Vol 26 (8) ◽  
pp. 717-732
Author(s):  
Ankang Ji ◽  
Xiaolong Xue ◽  
Yuna Wang ◽  
Xiaowei Luo ◽  
Minggong Zhang
Keyword(s):  
Integrated Approach ◽  
Maintenance Cost ◽  
First Year ◽  
Optimization Approach ◽  
Maintenance Strategies ◽  
Pavement Condition ◽  
Pavement Maintenance ◽  
Road Pavement ◽  
Maintenance Activities

Addressing the multi-dimensional challenges to promote pavement sustainability requires the development of an optimization approach by simultaneously taking into account future pavement conditions for pavement maintenance with the capability to search and determine optimal pavement maintenance strategies. Thus, this research presents an integrated approach based on the Markov chain and Particle swarm optimization algorithm which aims to consider the predicted pavement condition and optimize the pavement maintenance strategies during operation when applied in the maintenance management of a road pavement section. A case study is conducted for testing the capability of the proposed integrated approach based on two maintenance perspectives. For case 1, maintenance activities mainly occur in TM20, TM31, and TM41, with the maximum maintenance mileage reaching 88.49 miles, 50.89 miles, and 20.91 miles, respectively. For case 2, the largest annual maintenance cost in the first year is $15.16 million with four types of maintenance activities. Thereafter, the maintenance activities are performed at TM10, TM31, and TM41, respectively. The results obtained, compared with the linear program, show the integrated approach is effective and reliable for determining the maintenance strategy that can be employed to promote pavement sustainability.

scholarly journals Effectivness Of The Failure Rate On Maintenance Costs Of The City Buses

2015 ◽  
Vol 35 (1) ◽  
pp. 99-108
Author(s):  
Piotr Ignaciuk ◽  
Joanna Rymarz ◽  
Andrzej Niewczas
Keyword(s):  
Failure Rate ◽  
Cost Comparison ◽  
Maintenance Cost ◽  
Calendar Time ◽  
Maintenance Costs ◽  
Failure Index ◽  
Repair Costs ◽  
Maintenance Service ◽  
The City

Abstract The purpose of this paper was to present a failure rate and maintenance cost comparison for two types of city transport buses. The paper presents in detail a case study of well known bus brands used at Municipal Transport Company in Lublin. A failure index of all functional and constructional systems of the vehicles and their technical availability with regards to calendar time was determined. The paper also presents analysis of the factors related to maintenance costs of buses, including costs of fluids, repair costs and maintenance service. It has been demonstrated, that both analyzed buses generate similar maintenance costs, while their failures and technical availability differ significantly in operational practice. These differences are particularly evident in relation to the cumulative costs of repairs.

scholarly journals The impact of the city skyline on pleasantness; state of the art and a case study

Heliyon ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. e07009
Author(s):  
Mehrdad Karimimoshaver ◽  
Mastooreh Parsamanesh ◽  
Farshid Aram ◽  
Amir Mosavi
Keyword(s):  
State Of The Art ◽  
The Impact ◽  
The City

scholarly journals Evaluating the effectiveness of machine acquisitions and design by the impact on maintenance cost – a case study

2020 ◽  
Vol 53 (3) ◽  
pp. 25-30
Author(s):  
M. Hane Hagström ◽  
K. Gandhi ◽  
D. Bergsjö ◽  
A. Skoogh
Keyword(s):  
Maintenance Cost ◽  
The Impact

A case study of noise pollution levels during the restrictions period due to COVID-19.

2021 ◽  
Vol 263 (6) ◽  
pp. 206-214
Author(s):  
David Montes-González ◽  
Juan Miguel Barrigón-Morillas ◽  
Ana Cristina Bejarano-Quintas ◽  
Manuel Parejo-Pizarro ◽  
Guillermo Rey-Gozalo ◽  
...  
Keyword(s):  
Noise Pollution ◽  
Urban Environments ◽  
Control Measures ◽  
Acoustic Measurements ◽  
Pollution Levels ◽  
The World ◽  
The Impact ◽  
The City

The pandemic of coronavirus disease (COVID-19) led to the need for drastic control measures around the world to reduce the impact on the health of the population. The confinement of people in their homes resulted in a significant reduction in human activity at every level (economic, social, industrial, etc.), which was reflected in a decrease in environmental pollution levels. Studying the evolution of parameters, such as the level of environmental noise caused by vehicle traffic in urban environments, makes it possible to assess the impact of this type of measure. This paper presents a case study of the acoustic situation in Cáceres (Spain) during the restriction period by means of long-term acoustic measurements at various points of the city.

scholarly journals An Investigation of Soundscape Factors Influencing Perceptions of Square Dancing in Urban Streets: A Case Study in a County Level City in China

2019 ◽  
Vol 16 (5) ◽  
pp. 840 ◽  
Author(s):  
Jieling Xiao ◽  
Andrew Hilton
Keyword(s):  
Daily Basis ◽  
County Level ◽  
Urban Streets ◽  
Site Survey ◽  
Chi Squared ◽  
Related Group ◽  
Physical Features ◽  
The Impact ◽  
The City

Square dancing is a popular music-related group physical exercise for health benefits in China mainly participated by mid-aged women and elderly people. This paper investigates the soundscape and enjoyment of the square dancing in urban streets through a case study in Lichuan, a county level city in southwest China, in December 2017. It examines the impact of gender, age, participation and places on perceptions of square dancing soundscape. Two sites along two main urban streets in the city were selected to conduct onsite investigations where residents spontaneously perform square dancing on a daily basis. Ethnographical observations were conducted to identify the social-physical features and sounds of both sites during the dance and without dance. Sound pressure measurements (LAeq and LAmax) were also conducted under the two conditions. An off-site survey was distributed through the local social media groups to understand residents’ everyday experiences and perceptions of square dancing in the city; 106 responses were received for the off-site survey. T-tests and Chi-squared tests were used for statistical analysis of the survey data. The results show gender does appear to be a factor influencing the regularity of participation in square dancing, with a bias towards more female participants. Participation frequency of square dance has an impact on the enjoyment of square dancing. There is no correlation between the dislike of watching square dancing, or dislike of the music and a desire to restrict locations for square dancing.

Increasing Competition for University and the Challenge of Access for Government School Students—A Case Study

2008 ◽  
Vol 52 (3) ◽  
pp. 287-300 ◽  
Author(s):  
Daniel Edwards
Keyword(s):  
School Students ◽  
Government School ◽  
Educationally Disadvantaged ◽  
University Campuses ◽  
University Courses ◽  
Education Degree ◽  
The Government ◽  
The Impact ◽  
The City

There is a wide variety of universities, university campuses and university courses in Australia available to those interested in pursuing a higher education degree. This paper examines the impact of increasing competition for entrance to university on the educational outcomes for students from the government school sector. Using Melbourne as a case study, the research shows that, over a four-year period of increased competition, entry to some of the more academically accessible university campuses in the city became more difficult and this disproportionately affected the opportunities for university entrance among some groups. Despite the fact that there was no noticeable change in the academic standards achieved by government school completers, the rate at which government school students gained access to these universities declined noticeably during this time. These findings show how changes in supply of university places from year to year can have a profound effect on the opportunities of secondary-school completers—particularly those in more educationally disadvantaged settings.

scholarly journals The (No-)Public Space. Reviewing the Transformation of Al-Qaed Ibrahim's Urban Image

2020 ◽  
pp. 177-192
Author(s):  
Iman Hegazy
Keyword(s):  
Public Space ◽  
Public Spaces ◽  
The Political ◽  
Urban Image ◽  
Political Conflicts ◽  
Political Events ◽  
The One ◽  
The Impact ◽  
The City

Public spaces are defined as places that should be accessible to all inhabitants without restrictions. They are spaces not only for gathering, socializing and celebrating but also for initiating discussions, protesting and demonstrating. Thus, public spaces are intangible expressions of democracy—a topic that the paper tackles its viability within the context of Alexandria, case study Al-Qaed Ibrahim square. On the one hand, Al-Qaed Ibrahim square which is named after Al-Qaed Ibrahim mosque is a sacred element in the urban fabric; whereas on the other it represents a non-religious revolutionary symbol in the Alexandrian urban public sphere. This contradiction necessitates finding an approach to study the characteristic of this square/mosque within the Alexandrian context—that is to realize the impact of the socio-political events on the image of Al-Qaed Ibrahim square, and how it has transformed into a revolutionary urban symbol and yet into a no-public space. The research revolves around the hypothesis that the political events taking place in Egypt after January 25th, 2011, have directly affected the development of urban public spaces, especially in Alexandria. Therefore methodologically, the paper reviews the development of Al-Qaed Ibrahim square throughout the Egyptian socio-political changes, with a focus on the square’s urban and emotional contextual transformations. For this reason, the study adheres to two theories: the "city elements" by Kevin Lynch and "emotionalizing the urban" by Frank Eckardt. The aim is not only to study the mentioned public space but also to figure out the changes in people’s societal behaviour and emotion toward it. Through empowering public spaces, the paper calls the different Egyptian political and civic powers to recognize each other, regardless of their religious, ethnical or political affiliations. It is a step towards replacing the ongoing political conflicts, polarization, and suppression with societal reconciliation, coexistence, and democracy.

scholarly journals Application of Urban Geology in Construction Projects (Case Study: Urban Geology of Sarpol-e Zahab, Kermanshah Province, Iran)

2021 ◽  
Vol 53 (1) ◽  
Author(s):  
Sajad Afzali ◽  
Faezeh Taheri Sarmad ◽  
Mojtaba Heidari ◽  
Seyed Hossein Jalali
Keyword(s):  
Urban Space ◽  
Construction Projects ◽  
Urban Geology ◽  
Natural Phenomena ◽  
Horizontal Acceleration ◽  
Preliminary Study ◽  
The Impact ◽  
The City ◽  
Financial Losses

Urban geology is a preliminary study for the construction and development of cities, which has been more prominent in recent decades in some countries despite its long application history. It assesses the impact of geological and natural phenomena on urban space and available structures. The earthquake on Nov. 21, 2017, inflicted a lot of damage to the city of Sarpol-e Zahab, west of Iran, including financial losses and casualties. Reconstruction of this city and planning for its sustainable development entail conducting urban geological studies. In the present study, the effect of natural phenomena on Sarpol-e Zahab County was studied by investigating its geology and geomorphology. The results showed that, in addition to the earthquake that habitually affected the city of Sarpol-e Zahab, the hazards of other phenomena are also significant. Recorded horizontal acceleration in the recent earthquake confirmed the high seismicity of Sarpol-e Zahab has.

scholarly journals Case Study on the Impact of Artificial Light on Lighting Performance Quality for Architecture Studios

2021 ◽  
Vol 13 (3) ◽  
Author(s):  
N. A. Adnan ◽  
◽  
N. S. Sujali ◽  
N. D. Md Amin ◽  
◽  
...  
Keyword(s):  
Learning Experience ◽  
Comfort Level ◽  
Learning Space ◽  
Lighting Condition ◽  
Performance Quality ◽  
Engineering Society ◽  
Illuminance Level ◽  
The Impact ◽  
The City

A well-lit learning space is crucial to ensure the comfort of its occupants, especially for an architecture student who spends long hours in a studio to design, sketch, draw and build prototypes. This paper presents the results from a study conducted on the illuminance level of the architecture studios in the city campus of Universiti Tun Hussein Onn Malaysia (UTHM), Malaysia that were once laboratories. Measurements had been done using the Lux meter. Illuminance contours were generated using SigmaPlot and Dialux software for all the five rooms and compared with the requirements stipulated in the Malaysian Standard, Australia/New Zealand Standard and Illumination Engineering Society of North America (IESNA) standard for a room with similar function. A survey was also conducted among undergraduate architecture students who were using the studios daily to gauge their perception on the lighting condition and comfort level. The outcome of this study can be considered for future architecture studio lighting design to improve the students’ learning experience.

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