Road Improvement Research Articles

Methods of Diversion Road Improvement of Overpasses Under Repair

During the repair of motorway junctions, it is important to minimize transportation losses by urban vehicles for the period of road works.Methodology: Factor analysis.Purpose: The aim of research is to substantiate the best diversion road of the motorway junction under repair in the streets network adjacent to the object.Research findings: The dependence is shown of the average speed of cars and transportation cost on the distance between signalized intersections and traffic load.Value: An algorithm is developed for substantiation of the diversion road for construction site. Justification for the diversion road along the streets network adjacent to the object, is developed using the factor analysis and based on the traffic load, of roadway conditions, traffic lights, route length.

Pengaruh Peran Konsultan pada Performa Proyek Jalan di Kabupaten Dharmasraya

In the development of road infrastructure development, many are still found to be less than optimal in its implementation, not on time, and contract termination. One of them is road improvement work in Dharmasraya Regency. This study aims to identify the role of consultants in the performance of road projects in Dharmasraya Regency and to assess the most dominant role of consultants that influence the success of a road construction project. This research was conducted using a quantitative method. The data source uses primary data obtained from interviews and secondary data obtained from literature reviews. The research population was 81 respondents consisting of the owner, namely the Dharmasraya Regency PU Service, supervisory consultants, and implementing contractors involved in road construction and improvement projects in Dharmasraya Regency for the 2020 to 2022 budget years. The research sample used was the entire population. Data analysis techniques used factor analysis and multiple regression analysis. The results of the study found 61 sub-factors or variables that were the role of consultants in the successful implementation of road construction projects in Dharmasraya Regency. The dominant factor that is the role of consultants in controlling the implementation of road supervision in Dharmasraya Regency is the task factor with the sub-factor of coordinating all construction supervision personnel for each implementation of field measurements or engineering. The factors that are the role of consultants in controlling the implementation of road supervision in Dharmasraya Regency greatly influence costs, quality, and time with levels of influence reaching 48.3%; 56.8%; and 55.7% respectively.

The Right to Healthcare Must Include the Right to Ease of Physical Access: Exploring Geography-Health Nexus in GIDA Communities in the Philippines.

Using the United Nations' 'leave no one behind' framework for the achievement of sustainable development goals, this article underscores the key role of geography as one of the core factors why certain people are left behind, deprived, and continue to experience inequality in terms of access to (quality) health care facilities and services. This article specifically examines the consequences of physical inaccessibility to health outcomes and health-seeking behavior in geographically isolated and disadvantaged areas (GIDAs) in the Philippines. This article illustrates that physical accessibility is an ignored aspect of the public health paradigm. For that reason, public health facilities, no matter how critical the facility is to a person's care, are not an immediate option for GIDA residents who seek medical aid. Responsive policy measures are vital to address this seemingly paradigmatic error. Subsidizing transportation costs and allocating funds for road improvements are called for, among other changes. The government must act on the people's right to ease of access as part of fulfilling fundamental health-related state obligations. But for the government to act, it will be crucial for claimants to health rights to proactively demand these changes. The latter is key for the fulfillment of the affected people's right to get easier access to meaningful health care.

Analysis of Implementation Delay in Road Construction Project (A Case Study of Road Improvement Project in Jayapura Regency)

Planning and control over time and cost are important parts of overall construction project management. Work achievement of a project can be assessed through its quality, time, cost and safety aspects. So, in completing work project, time and cost incurred are aspects that must be continously measured for its deviation from the original plan. İn this study, time and cost deviations makes the management of road improvement project of Jayapura Regency getting worse. By employing several project performance indicators such as time and cost, it is possible to take preventative steps to make the road improvement project of Jayapura Regency can be proceed as planned. The research method applied in this research were qualitative and quantitative method where the qualitative method used a structured interview to respondents, while the quantity method involved a questionnaire distribution to total 100 respondents (10 project owners, 45 implementer contractors, and 45 consultants). Based on the result of this study, factors causing delays in the completion of road improvement project in Jayapura Regency are: (1) labor factor with value of 3.5400, (2) equipment factor with value of 3.4400, (3) finance factor with value of 3.4200, (4) material factor with factor of 3.3900, (5) scope of work and contract/work documents with value of 3.3900, (6) site characteristic factor with value of 3.3700, (7) changes factor with value of 3.3400, (8) managerial factor with value of 3.3300, (9) situation factor with value of 3.3200, (10) planning and scheduling factor with value of 3.2900, and (11) inspection, control and work evaluation systems with value of 3.2700. As for the ranking of variables causing delays for the completion of road improvement project in Jayapura Regency are: (a) workforce discipline with value of 3.5600, (b) inadequate number of workers or in accordane with the existing work activities with value of 3.5600 and (c) workforce nationalism with value of 3.5300

Faktor yang Mempengaruhi Rendahnya Kualitas Pekerjaan Konstruksi Jalan di Pasaman Regency

In an effort to meet the needs for optimum road facilities and infrastructure, through the Public Works and Spatial Planning Department, every year there are road construction and improvement activities in Pasaman Regency. The quality of road construction and improvement projects in Pasaman Regency is relatively low, so researchers conducted an analysis of the things that influence this low quality. The aim of this research is to identify factors that influence the low quality of road improvement and construction projects in Pasaman Regency and analyze the dominant factors. The data collection technique was carried out using a quantitative method, namely distributing questionnaires to respondents. Next, data processing was carried out by testing validity, reliability and factor analysis using SPSS. The results of the research conducted showed that there were 6 factors that influenced the low quality of road improvement and construction projects in Pasaman Regency, namely environmental and technical factors 16.686%, work method factors 12.047%, equipment factors 10.971%, labor factors 10.039%, managerial factors 8.648%, and external factors 7.999%. The dominant factors influencing the low quality of construction work in road improvement and construction in Pasaman district are environmental and technical factors, which consist of the response of the surrounding environment regarding project safety; existing and physical characteristics of buildings around the location; natural disasters; material prices; and funding at the contractor.

Dampak Perbaikan Jalan Terhadap Peningkatan Ekonomi Masyarakat Di Desa Mergosari Kecamatan Tarik Kabupaten Sidoarjo

This research aims to find out the impact of road improvements on improving the community's economic business in Mergosari village, Tarik, Sidoarjo. This research method uses qualitative research with descriptive methods. Data collection was done by conducting in-depth interviews with descriptive analysis method. The results showed that the impact of road improvements had a significant positive impact on increasing the economic efforts of the community in Mergosari village, Tarik, Sidoarjo. The implications of this research can be used as a basis for improving sustainable infrastructure development strategies to support local economic growth and community welfare in the region.

Analysis of Sustainable Infrastructure Development in Sorong Regency Based on Environmentally Technology Criteria

Sorong Regency is inhabited by around 188,6779 people in West Papua Province. At this time, Sorong Regency is starting to develop infrastructure to support economic activities in Sorong actively. It has become one of the districts focused on development in the eastern part of Indonesia, with examples of infrastructure projects including the improvement and creation of several roads, bridges, irrigation and the construction of Sorong Special Economic Zones (SES). This research aims to determine the sustainable infrastructure development of Sorong Regency, especially in the Aimas, Mariat, Mayamuk, and Salawati Districts based on environmental and technological criteria. The research method used is Multidimensional Scaling (MDS) with the Rapinfra (Rapid Appraisal of Infrastructure) method. The results of the research regarding the status of infrastructure development in the Aimas District area with an index value of 48.74% and Mariyat District with an index value of 58.92% in terms of environmental criteria are considered less sustainable. In comparison Mayamuk District with an index value of 68.56% and Salawati District with an index value of 60.00% are considered sufficient. Meanwhile, in terms of technological criteria, the Aimas District with an index value of 65.07% and the Mariyat District with an index value of 60.22% are considered not or not yet sustainable; meanwhile, the Mayamuk District area with an index value of 84.64% and the Salawati District with an index value of 91.55 are considered to be quite sustainable.

Integrating vision and lidar based hyperlocal metadata for optimal capacity expansion planning in hillside road networks

The rapidly expanding population and scarcity of affordable housing in many urban areas, such as Los Angeles, have resulted in large inventories of structures in hilly landscapes. Such urbanization has also rendered road capacities inadequate in many instances, with hazards such as floods, fires, and earthquakes posing additional risks to such inventory. Planning construction activities such as widening, structural, and geotechnical retrofits to increase capacity and resiliency by cutting through slopes and incorporating landslide protection measures requires hyperlocal information for road segments in hillside areas. Performing traditional surveys for large areas of such road networks can be both time-consuming and cost prohibitive. At the same time, data acquired from satellites may not provide the required spatial resolution for planning, especially regarding road-adjacent features such as slopes. This paper proposes a novel framework to fuse hyperlocal data regarding road and adjacent slopes gathered from the street-level mobile mapper equipped with cameras and lidar into the network design problem (NDP) to develop an optimal road width expansion plan. The hyperlocal features are derived from a colorized point cloud map and deep learning techniques to estimate the relevant features in hillside landscapes. Specifically, a deep learning-based segmentation and detection algorithms combined with novel point cloud processing techniques are used to obtain a spatially dense profile of the road and the adjacent slope. By leveraging such hyperlocal information, we explore all the potential road capacity and improvement options for road capacity expansion. Furthermore, we demonstrate the advantages of our proposed method over conventional techniques, particularly working with budget constraints. In terms of novel contributions, incorporating hyperlocal information into NDP for hillside road capacity expansion is novel, as well as algorithms to automatically detect and characterize relevant roadside features from remotely sensed lidar point clouds.

Methodological Frameworks For Street And Road Environment Improvement With Due Regard To Inclusion Requirements

Methodological Frameworks For Street And Road Environment Improvement With Due Regard To Inclusion Requirements

Transportation upgrades and structural transformation in the labor market: Evidence from a road improvement project in benin

How do transportation upgrades affect structural transformation in the labor market in developing countries? We focus on a specific case, Benin’s Djougou-N’dali Road Improvement Project conducted between 2004 and 2010, and estimate its effects on changes in the composition of workers by sector. Our difference-in-differences estimates suggest evidence of structural transformation in the labor market: the road improvement project leads to a relative increase in the proportion of workers in the industrial sector by 3.9 percentage points, representing a 30-percent increase. This is accompanied by a sharp decrease in the proportion of agricultural workers and an overall insignificant decrease in the proportion of service workers. These labor market effects are spatially heterogeneous: changes in agricultural workers and service workers are significant only in rural and urban areas, respectively, while both two types of areas see an increase in the proportion of industrial workers. Besides, these effects are significant only for female workers. Our findings present direct labor market effects of transportation upgrades through job switches across sectors, while other labor market mechanisms cannot explain structural transformation.

Developing a cost estimation model for efficient road improvement planning: A case study in Aceh Jaya regency

Abstract Estimation is a method used to predict financial requirements by analyzing, calculating, and engineering based on field conditions and bidding documents. To enhance efficiency, there is a pressing need for a simple, swift, accurate cost estimation model. Therefore, this study aimed to establish cost estimation model at the initial planning phase of construction work and to assess its accuracy in estimating cost for road improvement using cost significant model (CSM) compared to actual expenses. The fundamental objective was to facilitate the execution of construction work, ensuring the successful completion. Data collection occurred at the (PUPR) in Aceh Jaya Regency, consisting of 25 contracts for road improvement work spanning from 2018 to 2022. The data included the execution year, road area, total variable cost (y), and the categorization of work item as independent variables (xn). Subsequently, the work data was transformed into data per square meter (m2) for each work item by dividing each independent variable by the area of road improvement work. This showed the cost/m2 for each work item (xn) and the total cost (y)/m2. Annual inflation data was obtained from (BPS) of Aceh province used for calculation projection year. The identification of cost-significant item variables occurred after organizing the data according to work item, adjusting the work cost for the execution year and the work-year cost while considering inflation factor. Additionally, it was observed that 3 most expensive work items represented 80% work item had a substantial impact on the total cost. Classic assumption tests were conducted to confirm the suitability of data for further analysis. The analysis was conducted using multiple linear regression, resulting in a model with y = 69850.515 + 0.879(x4) + 1.085(x5) + 1.221(x7). When cost significant model estimates were compared to the actual total cost of road improvement in Aceh Jaya, the accuracy ranged from +17.46% to -19.30%, which was consistent with Class 3 classification of (AACE) International standards.This classification was suitable for semi-detailed cost estimation in the conceptual phase.

Analisis Produktivitas Alat Berat Pada Pekerjaan Peningkatan Jalan Batas Kota Pegaf – Batas Kabupaten Manokwari Selatan

Roads in Manokwari City still need a lot to be improved, especially on the Pegaf city boundary road - South Manokwari district, because this road connects the border between the City and the district.... This study aims to calculate the productivity of heavy equipment working on road improvement work, Analyzing the balance of road improvement work tools and knowing the total cost and time required in road improvement projects. So that this research is expected to be useful for optimizing the performance of road sections and being able to provide solutions to problems that occur and can provide an overview of the process of using heavy equipment that is effective and efficient. Productivity is the ability to produce something, so it can be said that heavy equipment productivity is the ability of heavy equipment to produce something per unit of time. In general, heavy equipment work production has the same calculation principles. The basic principles of calculating heavy equipment work production are 4 steps, namely calculating actual capacity, cycle time, calculating gross work production (PKK) and calculating actual work production (PKA). So it can be concluded that the productivity of ordinary embankment excavator 173.68m3 / hour, dump truck 10 tons of ordinary embankment 45.58m3 / hour, optional embankment 36.3m3 / hour, asphalt foundation layer (HRS Base) 7.91m3 / hour, Dump truck 4 tons of Class A aggregate layer 4.02m3 / hour, Class B aggregate layer 4.06m3/hour, motor grader 315m2/hour regular embankment, 174.30 m3/hour optional embankment, 561m2/hour pavement preparation, Class A aggregate layer 274.63m3/hour, Class B aggregate layer 274.63m3/hour, vibratory roller regular embankment 159.36 m3/hour, class A aggregate layer 77.02m3/hour, class B aggregate layer 77.02m3/hour asphalt distributor binder layer 4980 liters, air compressor binder work 1365.35 liters, asphalt finisher asphalt foundation layer (HRS Base) 69.85 tons, tandem roller regular embankment 39.84m3/hour, preparation of the road body 272.98m3 / hour, paving 86.59m3 / hour, wheel loader preferred embankment 117.58m3 / hour, class A aggregate layer 114.98m3 / hour, class B aggregate layer 116.53m3 / hour and tire roller paving 104.06 tons and the total cost of all equipment rental is Rp. 254,091,569.

Relative improvements between roads and railways and economic performance: A panel data analysis

Prior studies indicate that expanding the length of roadways and railways has a beneficial effect on economic performance. Nevertheless, the requirement for land transport infrastructure, which offers different degrees of accessibility and mobility, to facilitate economic expansion differs based on a country's stage of development. The present study has two objectives. Firstly, it is essential to ascertain the required investment for different types of land transport infrastructure to facilitate different stages of economic performance. Secondly, the objective is to examine the impact of different forms of land transportation infrastructure on economic performance by means of urbanization and exports. To highlight these concerns, a fixed-effects panel linear regression analysis was conducted on a panel consisting of 50 countries spanning the years 1980–2018. In countries with lower levels of urbanization and exports, improvements to road infrastructure, especially roads with high accessibility, are of greater importance for economic performance compared to the improvement of railways. Nevertheless, as urbanization and exports rise, the comparative impact of improvements in road infrastructure on economic performance in relation to improvements in railway infrastructure diminishes. Railway improvements have a more significant effect on economic performance compared to road improvements, owing to increased urbanization and export rates. During these stages of development, high-mobility roads are more crucial for economic performance compared to high-accessibility roads. The conclusion of the research examined a variety of policy recommendations derived from our findings, which are applicable to different levels of urbanization and exports.

Manajemen Risiko Pelaksanaan Proyek Peningkatan Jalan Kota Denpasar Dan Dampaknya Terhadap Lingkungan

Good roads are one of the important things in the world of transportation, especially in Denpasar City. This encourages improvements to road infrastructure in Denpasar City through road management activities including road maintenance and improvement. Road improvement construction work is the work that has the most risks and impacts on the surrounding environment during the road improvement project process. This research aims to identify and mitigate risks in road improvement construction work in Denpasar City. The method used in the research was interview methods with respondents involved in road construction projects in Denpasar City. The risk assessment is carried out after receiving answers from respondents, this aims to measure the dominant risks that exist. The risk mitigation process and risk ownership will be held accountable by the project owner as well as contractors, supervisory consultants, and planning consultants. The results of the research were 30 risks found in road improvement projects in Denpasar City with the sources being the environment (14.3%), politics (5.8%), planning (8.5%), economy (5.7%), natural (8.52%), technical (22.08%), human (8.5%), criminal (6.7%), safety (5.7%), project (14.2%). From the results of this analysis, risks in the technical, environmental, and project categories have the highest percentage. The environmental impact factor is also considered in this construction work because it is ranked second after technical risk. This encourages the implementation of risk management in every road improvement project activity in the following years, to create appropriate handling strategies that do not harm the environment.

Factors Affecting Construction Workforce Performance on Road Improvement Projects in Sigi District

Many projects do not run as expected due to low workforce performance. Therefore, the aim of this research is to determine the factors that influence performance and the factors that most influence the performance of construction workers on road improvement projects in Sigi Regency. The type of research used is descriptive research with a quantitative approach. In this research, the sampling technique used was nonprobability sampling with the technique taken being saturated sampling (census) with a total of 50 respondents. To collect data using observation techniques and distributing questionnaires. Data analysis using Factor Analysis. Based on the research results, there are five factors that influence the performance of construction workers on road improvement projects in Sigi Regency. These five factors are individual and supervisor factors, educational factors and facilities provided, discipline and work system factors, leadership and supervision factors, and changes in work environment. The magnitude of the influence resulting from all these factors reached 65.075% while the remaining 34.925% was influenced by other factors whose influence was not significant, this was obtained from the factor analysis test.

An assessment of the perceptual elements of urban streets based on the context of urban tourism - The case of Sheffield.

After COVID-19, more and more travelers are more inclined to walk in cities, and the sensory elements of streets can have a significant impact on urban tourism. Local residents and travelers have different perceptions of the street and preferences for its use. The purpose of this study is to evaluate and analyse the streets from the perspective of locals and travelers. In this study, a questionnaire was designed to obtain local residents' and travelers' evaluations of the sensory elements of the street and a quadrant analysis of the street's sensory elements was carried out using the IPA-Kano model. The results of the study show that travelers are particularly concerned about maps and signage guidance, while local residents are more concerned about the green environment of the surroundings and how well it is maintained. There is a difference in the indicators chosen by the two groups in the results of the comparison between locals and travelers, and this study is hoped to provide some data support for future urban managers and designers to learn from and refer to for street improvements and renewal.

Congestive mode-switching and economies of scale on a bus route

This paper introduces a type of circular causation called Congestive Mode-Switching (CMS) that may arise when an increase in congestion penalizes transit relative to driving. In turn, rising congestion persuades some transit riders to drive, which exacerbates congestion further, and so on. This circular causation can beget multiple equilibria with different levels of congestion and transit ridership. The paper explores this logic with a static model of a bus route. When the bus fleet size is fixed, CMS applies because congestion raises the bus cycle time and thus lowers bus frequency, resulting in higher wait times. When the fleet size depends on bus ridership, CMS is joined by economies of scale as a second source of circular causation. We derive the system’s equilibria using a static model in the vein of Walters (1961), which permits us to graphically characterize equilibria in useful ways. The comparative statics of a road improvement show how feedback alters first-order effects. A Downs-Thomson paradox is not possible, because a road improvement aids buses even more than cars. Continuous-time stability analysis shows that multiple equilibria may be stable.

Use of Web-GIS Database Model to Accommodate Public Participation in the Improvement of Sustainable Road and Bridge Management: A Conceptual Idea

Sustainability is usually associated with energy source, ecological, soil and environmental aspects. Periodical road and bridge preservation is required to ensure the increasing of accessibility and mobility level, to increase regional economics’ growth, to minimize unplanned or unpredicted environmental consequences and to improve institutional arrangement capability as well. Road and bridge preservation is commonly managed based on its level of damage and constrained in budgeting. Poor public policy makes it worst. Therefore, the issue of strengthening the capacity of regional road and bridge management institutions is deemed important and urgent not only to reduce roads and bridges preservation cost but also to increase regional economics’ growth. Therefore, a proper road preservation type and priority should be determined based on technical, socio-economics, environment and public policy consideration. However, annual road and bridge functional condition data collection took high cost because it has been carried out by engineering consultant. The aim of this study is resolve it by providing a public participation portion in a road and bridge data base model. They are simply asked to send a real time condition of road s or bridge nearby to the local authority. The results strongly indicate that cost saved obtained from it could be focused to road and bridge preservation cost.

Traffic Engineering At The Kim Ii Roundabout

As the manager of the industrial area, currently PT. KIM has problems related to traffic jams that occur around the KIM roundabout and to reduce the number of traffic accidents at KIM due to collisions between vehicles from opposite directions, it is necessary to carry out traffic engineering in the area. Traffic engineering is related to the implementation of repair work Roundabouts are not only road construction improvements but also include traffic engineering before, during and after construction. Simulation of traffic conditions to provide alternative solutions to traffic problems that occur at the KIM II Roundabout using VISSIM software. From the results of the simulations that have been carried out, it can be seen that almost all road sections have a level of service F, which means they have a VCR value > 1. This is included in the oversaturated category, side obstacles and delays increase, stopping and moving events increase, if the flow increases, the vehicle speed is equal to zero (complete stop). This condition causes delays on one of the sections of 151 vehicle seconds and this condition is not very good because it will lengthen the queue of vehicles crossing the roundabout. In accordance with the simulation that has been carried out, and based on several applicable regulations regarding the traffic system at roundabouts, several alternatives for handling traffic problems in the KIM II Roundabout area are provided.

Pedestrian-oriented development in Beirut: A framework for estimating urban design impacts on pedestrian flows through modeling, participatory design, and scenario analysis

As municipalities are setting ambitious targets to increase non-motorized transportation mode shares, analytic frameworks for examining how such targets will be met become increasingly important. In this article, we update the Urban Network Analysis pedestrian modeling framework designed to link land use and urban development changes with pedestrian mobility outcomes by introducing new methods for capturing the effects of street properties on pedestrian travel demand and adjusting pedestrian trip generation rates with k-nearest accessibility scores based on destination availability in each context. This framework was used in conjunction with a participatory design process in Beirut, Lebanon to estimate pedestrian mobility impacts of three urban design scenarios. We illustrate how each scenario affects pedestrian trip generation across various trip types and trip distribution on individual street segments. Our approach demonstrates how urban design interventions–both land use changes and street quality improvements–can influence pedestrian travel demand. Estimates of these changes can provide planners and policymakers with valuable benefit-cost analyses of public space improvements, and a framework for understanding how site-specific planning and development decisions can impact progress towards (or away from) non-motorized mobility goals.