Rojee Pradhananga

Tribhuvan University · Department of Civil Engineering

The Kathmandu Terai Fast Track (KTFT) Expressway aims to bolster connectivity between Kathmandu valley and Nepal’s Terai region. Despite its potential benefits in enhancing economic development and accessibility, the project poses challenges due to the existing poor road network and traffic congestion in Kathmandu valley. This study assigns project...

Pavement condition assessment is one of the important tasks to be carried out to prioritize maintenance needs of the road. The Pavement Condition Index and International Roughness Index are some of the most widely used and comprehensive indices for the assessment of pavement condition. The maintenance planning is generally carried out in terms of S...

The diminishing preference for the public transportation system in the Kathmandu Valley has been a longstanding issue, attributed to factors such as uncontrolled urbanization, increased motorization, inadequate transit infrastructure, and diminished reliability. The issue of less reliability of public transport in Kathmandu has drawn significant in...

Unsignalized crosswalks are the most common pedestrian crossing facilities on the city roads of Kathmandu. This sharing of the road between pedestrians and vehicles can be very unsafe for walking. To demur such conflict, analyzing pedestrians' waiting behavior and designing pedestrian signals considering different factors is the most efficient way....

Disregarding the signal and crossing the road in haste or for other personal motives is a well-established trend seen in signalized crosswalks, particularly among pedestrians in lower-middle income developing countries such as Nepal. At signalized crosswalks, pedestrians are sequentially separated from vehicles (unlike unsignalized crosswalks) due...

The choice of pedestrian waiting time significantly affects pedestrian signal design. This research focuses on the assessment of factors that influence pedestrian waiting time at an unsignalized crosswalk. An investigation into pedestrian behavior is carried out at the unsignalized crosswalk of Jamal, Kathmandu. The discrete choice model is applied...

One of the most critical reasons for pedestrian fatalities in signalized urban intersections is their risk taking behavior and tendency to run red lights. The current study is an attempt at assessing the factors influencing red light violation behavior of Nepalese pedestrians. Binary logistic regression has been conducted on a total of 600 pedestri...

This study analysed the patterns of vehicular delays at curb side lanes near intersection due to three bus stop parameters: distance between stop and intersection, length of bus loading area and maximum dwell time. Traffic data were collected for five weekdays at New Baneshwor intersection in Kathmandu, Nepal from which the VISSIM model was calibra...

Crash barriers are one of the most important components for traffic safety. Despite their importance, there is no advancement in their tests in Nepal. As a result, the design standards for crash barriers are yet to be updated and further fails to include wire rope barrier system. This study aims to see effectiveness of three different types of non-...

This paper presents a three-dimensional flexible pavement simulated in ANSYS subjected to moving vehicular load on the surface of the pavement typical for the road section in Nepal. The adopted finite element (FE) model of pavement is validated with the classical theoretical formulations for half-space pavement. The validated model is further utili...

Reliable prediction of pavement performance is essential for transportation agencies to effectively plan and manage maintenance, rehabilitation, and reconstruction of roads. Currently, the maintenance needs of national highways in Nepal are decided based on Surface Distress Index (SDI) and International Roughness Index (IRI). SDI is a subjective ra...

Road surface roughness affects the dynamic interaction between vehicle and bridge. Dynamic impact in the bridge due to vehicle is more if the road surface condition in the bridge is poor. This paper presents a detailed analysis of a composite steel–concrete bridge for its fatigue life due to road surface conditions. The analysis includes a model th...

The sudden rise of traffic congestion in Kathmandu valley has not only caused a dent in the economy but is also problematic to many people living in the Kathmandu valley. Influences due to various factors related to unplanned urbanization and traffic congestion have ultimately affected the valley to achieve its planned objectives. Reversible Lane S...

Prepositioning of resources for humanitarian assistance to the victims of natural disaster is an important consideration to mitigate the problem that occurs due to the shortage in the supply of resources. Prepositioned resources should be distributed in the affected areas. Although prepositioning of the resources in natural cases like an earthquake...

This paper presents results of an explanatory study on Industry-University-Government Partnership (IUGP) status, trends and mechanisms in the gas-rich Qatar and benchmark it with IUGPs of three advanced or emerging knowledge economies. We perform a comprehensive study of the IUGP framework in Qatar in terms of the four main drivers of IUGP namely t...

Resource planning in emergency response phase is challenging primarily because the resources have to be delivered to the affected regions in a timely manner and in right quantities. Disasters such as the hurricanes, epidemics and chemical explosions in general impact large regions and emergency supplies are needed for several days. Demand for the r...

In this paper, a three-echelon network model is proposed for integrated emergency preparedness and response planning for the distribution of emergency supplies. The model minimizes the social cost to identify a set of potential supply points (SPs) at the highest echelon, where supply items are consolidated and sent to the prepositioning facilities....

We propose a network flow model for dynamic selection of temporary distribution facilities and allocation of resources for emergency response planning. The model analyzes the transfer of excess resources between temporary facilities operating in different time periods in order to reduce deprivation. Numerical analysis shows that the location of tem...

Unlike normal traffic incidents, incidents involving hazardous material are associated with significant traffic delays. The model of the hazardous material routing and scheduling problem presented in this paper considers such potential effect of a hazardous material incident, in addition to the traditionally considered risk to exposed population. P...

This paper presents a Pareto-based bi-objective optimization of hazardous materials vehicle routing and scheduling problem with time windows and shows its application to a realistic hazardous material logistics instance. A meta-heuristic solution algorithm is also proposed, which returns a set of routing solutions that approximate the frontier of t...

This paper presents environmental analysis of the Pareto optimal solutions of a bi-objective Hazardous material Vehicle Routing and Scheduling Problem with Time Windows (HVRPTW) logistics instance derived from road network of Osaka city, Japan. Environmental emissions of CO2, NOx and SPM corresponding to the Pareto optimal solutions were determined...

This paper introduces an optimisation model for transportation of the hazardous material (Hazmat). The focus is on application to developing countries like Thailand. The objective of the proposed Vehicle Routing Problem with Time Window (VRPTW) model for Hazmat routing is to minimise the economic and risk costs using available data and information...

This paper presents a new meta-heuristic algorithm using an ant colony system (ACS) for multi-objective optimisation of hazardous material (HAZMAT) transportation. We focus on the vehicle routing problem with time windows (VRPTW) aspect of HAZMAT transportation problem. A VRPTW formulation considering multiple attributes in application to HAZMAT tr...

The previous study aims to create a model to prepare a risk-based route network by prioritization technique with Analytic Hierarchy Process (AHP). This research proposes a method to create an effective logistics network with HazMat-risk concern using Analytic Hierarchy Process (AHP). In the research, gasoline logistics was selected for detailed stu...

A HAZMAT vehicle routing problem considering multi-objective requirements and a meta-heuristic solution algorithm is presented in this paper. In contrast to existing studies, an attempt has been made to carry out routing and route choice processes together as a single step process. Pareto-optimal concept using non-dominated paths are utilized, deal...

Due to severe consequences in Hazardous Material (HazMat) accident like gasoline, risk assessment concepts have always been included in managing HazMat logistics, especially for vehicle routing. As there are several of risk criteria in use for HazMat logistics management, this can lead to confusion in making a proper decision. This study proposes...

Because of the severe consequences arising from Hazardous Material (HazMat) accidents, risk assessment concepts have become a necessary part in the management of HazMat logistics, especially for vehicle routing. Optimization is an effective technique and is often used in handling the HazMat logistics routing. This study aims to create a model to pr...

Kyoto University (京都大学) 0048 新制・課程博士 博士(工学) 甲第15653号 工博第3311号 新制/工/1500 28190 2010-09-24 京都大学大学院工学研究科都市社会工学専攻 (主査)教授 谷口 栄一, 教授 藤井 聡, 准教授 宇野 伸宏 学位規則第4条第1項該当