Khaled Hamad

Khaled Hamad
University of Sharjah | US · Department of Civil and Environmental Engineering

Ph.D. in Civil Engineering (Tr

About

97
Publications
22,481
Reads
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515
Citations
Additional affiliations
July 2017 - present
University of Sharjah
Position
  • Professor
September 2009 - present
University of Sharjah
Position
  • Professor (Assistant)
September 2009 - July 2017
University of Sharjah
Position
  • Professor
Education
August 2000 - June 2004
University of Delaware
Field of study
  • Civil Engineering
August 1998 - August 2000
University of Delaware
Field of study
  • Civil Engineering/Transportation Engineering
January 1991 - December 1996
An-Najah National University
Field of study
  • Civil Engineering

Publications

Publications (97)
Article
The COVID-19 pandemic outbreak in early 2020 impacted people’s lives and the working environment and led to a drastic change in human activities. This has opened a window to analyze the people’s response to the safety measures implemented to contain the virus, which can be reflected and monitored using Night-time light (NTL) images. This study aims...
Article
This research proposes a hybrid approach for predicting incident duration that integrates the salient features of both factorial design of experiments (DOE) and machine learning (ML). This study compares DOE with another widely used technique, forward sequential feature selection (FSFS). Moreover, to confirm the effectiveness and robustness of the...
Article
Full-text available
Pavement maintenance decision-making is receiving significant research attention since pavement infrastructure is aging and deteriorating. The decision-making process is mainly related to selecting the most proper maintenance intervention for pavement sections to ensure performance and enhance safety. Several preventive maintenance methods have bee...
Article
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Climate change is undoubtedly affecting the global weather of the Earth. Rapid human civilization has mainly caused this in the last few decades. This research examined the spatial and temporal land surface temperature (LST) in the United Arab Emirates (UAE) coastal cities located in an arid region that faced massive urbanization over the last 50 y...
Article
The stringent COVID-19 lockdown measures in 2020 significantly impacted people's mobility and air quality worldwide. This study presents an assessment of the impacts of the lockdown and the subsequent reopening on air quality and people's mobility in the United Arab Emirates (UAE). Google's community mobility reports and UAE's government lockdown m...
Conference Paper
To stop the spread of the COVID-19 pandemic, the state of Florida has issued a stay-at-home order for the whole state. This rare incident set the door for research on the lockdown’s impact on traffic-related air pollution. During the lockdown period in Florida’s District 7, this study seeks to analyze changes in traffic volume, mobility, air pollut...
Article
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Connected and automated vehicles (CAV) will change the transportation world at an increasingly substantial pace. To realize the full potentials of CAV technologies, we need to investigate the transition period during which CAVs will share the roads with manually driven vehicles (MDV). This study provides a detailed assessment of the impacts of CAVs...
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Full-text available
This study presents an analysis of the impact of COVID‐19 lockdown on people’s mobility trends, air quality, and utility consumption in Sharjah, United Arab Emirates (UAE). Records of lockdown and subsequent easing measures, infection and vaccination rates, community mobility reports, remotely sensed and ground‐based air quality data, and utility (...
Article
Many initiatives have been carried out to establish green rating systems that encourage sustainable transportation systems' design and management. However, some studies showed a remarkable lack of understanding of these systems, which led to a lack of confidence in adopting them. This research developed a transportation rating system with a primary...
Article
Background and aim The interest in investigating transportation issues at university campuses has been growing worldwide. Given the university travelers’ unique travel patterns and characteristics influenced mainly by students, forecasting the travel demand of university travelers provides a unique opportunity to understand these patterns and seek...
Article
Full-text available
Introduction & Objective Travelers to university campuses tend to follow particular travel patterns; hence, assessing these patterns offers a unique opportunity to recognize this important population group. This study investigates the differences among the various traveler groups (e.g., students, faculty, staff, and visitors) regarding travel mode,...
Article
This paper presents the development of a new model for predicting traffic incident duration using random forests (RFs), a data-driven, non-parametric machine learning technique. Utilizing an extensive dataset with over 140,000 incident records and 52 variables, the developed RF model was optimized by fine-tuning its parameters. The best-performing...
Article
Accurate pavement performance modelling is an essential requirement for cost-effective pavement design and enhances pavement management decision making. Due to the complexity of the pavement structure and pavement response, dominant failure mechanisms may vary depending on the climate region: cold or warm. This study investigated the significance o...
Conference Paper
Full-text available
A growing interest in the behaviour of travelers to university campuses has recently emerged whether by university administrators or transport officials. Understanding the modal choice determinants of university travellers increases the opportunity for finding appropriate policies and solutions to reduce traffic congestion and parking needs as well...
Article
Traffic incident duration provides valuable information for traffic management officials and road users alike. Conventional mathematical models may not necessarily capture the complex interaction between the many variables affecting incident duration. This paper summarizes the application of five state-of-the-art machine learning (ML) models for pr...
Article
Full-text available
Prediction of allowable bearing capacity of granular soil requires an intensive field investigation program. This research proposes empirical correlations to predict the allowable bearing capacity and elastic settlement of shallow foundation on granular soils. The current correlation using only standard penetration blow count number and soil unit w...
Article
The purpose of this research is to evaluate the performance of the Directional Interchange with Semi-Direct Ramp Connection with Loops (DI-SDRL) interchange in terms of traffic operations under a wide-range of traffic demand conditions. Towards this end, the performance of this interchange has been compared to a conventional one, i.e. Directional w...
Article
Full-text available
Pavement condition rating is an essential step in pavement management, as it provides the basis for maintenance decisions and budget allocations. The pavement deterioration process is stochastic in nature because several types of distress usually affect performance of a pavement structure. Hence, the deterministic number-based condition indices use...
Article
The present work used the analytical hierarchy process supported by a machine learning technique (namely random forest variable importance) in a geospatial environment to identify traffic-incident hot spots where seven incident attributes (incident severity level, vehicle type, number of vehicles involved, number of weather condition factors, numbe...
Article
Accurate prediction of roadway traffic noise remains challenging. Many researchers continue to improve the performance of their models by either adding more variables or improving their modeling algorithms. In this research, machine learning (ML) modeling techniques were developed to predict roadway traffic noise accurately. The ML techniques appli...
Chapter
Seismic hazard and geotechnical microzonation maps of urban communities make it conceivable to describe potential seismic zones that should be considered when planning new structures or retrofitting existing ones. This study looked at a local site-specific ground response analysis, which is an important step in estimating the effects of earthquakes...
Article
Full-text available
An essential task in the process of construction is the determination of compaction properties of soils. Many years of laboratory test experience strengthen our belief in the existence of predictive equations that govern the compaction characteristics of soils. An advanced mathematical model developed in this research in order to uncertain the gove...
Article
This research proposes the use of artificial neural network to predict the allowable bearing capacity and elastic settlement of shallow foundation on granular soils in Sharjah, United Arab Emirates. Data obtained from existing soil reports of 600 boreholes were used to train and validate the model. Three parameters (footing width, effective unit we...
Article
Vehicle routing is a daily activity to move people and goods from one point to another. Routing is subject to constraints, such as time, distance, and out-of-pocket cost. Traditionally, routing decisions were based mainly on efficiency considerations (i.e., finding shortest path in terms of distance or travel time). With rising global interest in t...
Article
Vehicle routing is a daily activity to move people and goods from one point to another. Routing is subject to constraints, such as time, distance, and out-of-pocket cost. Traditionally, routing decisions were based mainly on efficiency considerations (i.e., finding shortest path in terms of distance or travel time). With rising global interest in t...
Article
The performance of asphalt pavement is highly affected by climate factors, such as temperature and precipitation. Different temperature and moisture conditions change the paving material properties, which consequently influence pavement performance. Considerable research has been conducted to study the effect of climate factors on pavement performa...
Article
Road traffic noise is the most prevalent form of environmental noise pollution, and it can either be measured in the field or predicted through verified mathematical models. While many road traffic noise models are available around the world, these models cannot be simply generalized because local conditions affecting such noise (e.g., vehicle type...
Article
Urbanization is typically demonstrated by expansion of a city’s infrastructure, mainly development of its roads and buildings. In particular, transportation infrastructure is a key indicator of growth in the city since transportation is the backbone of economic development and prosperity. Recent advances in satellite imagery, in terms of improved s...
Chapter
Sharjah is the third largest and populous city in the United Arab Emirates (UAE). It is located along the northern coast of the Persian Gulf on the Arabian Peninsula. Throughout the past few decades, Sharjah City has witnessed massive growth in its urban area and infrastructure facilities. Transportation infrastructure, in particular, is a key indi...
Article
Full-text available
Throughout the past few decades, Dubai City has witnessed massive growth in its urban area and infrastructure facilities. The discovery of oil and gas in the Emirate significantly played a role for such a rapid growth. Given this fact and the short time-period for such an expansion, it is crucial to develop an understanding of the patterns of the d...
Article
Full-text available
This paper is to investigate the pedestrian safety in Sharjah (UAE), and suggest recommendations to improve safety in the emirate. A survey data was collected from 570 participants in December, 2016, and included the following informations: measure the awareness of drivers and pedestrians, determine the behavior of road users, take general views fr...
Article
Full-text available
This paper summarizes the work conducted to estimating a U-turn adjustment factor at selected signalized intersections in Doha, Qatar. Unfortunately, the Highway Capacity Manual (HCM) 2010 does not consider the effect of U-turn traffic on the capacity of signalized intersection; therefore, a few researchers attempted to develop U-turn adjustment fa...
Article
Traffic noise is recognized as a major source of environmental pollution since it negatively affects human health. One of the challenges faced by researchers and professionals working in the field of traffic noise is that traffic noise varies among countries. This variation is due to differences in many factors, such as vehicle classifications, typ...
Conference Paper
Traffic noise is the World’s most prevalent form of environmental noise which negatively affects 2 human health. Traffic noise varies among countries due to differences in many factors, such as 3 vehicle classifications, type and condition of the pavement surface, and metrological conditions. 4 Given the growing interest in environmental noise in U...
Conference Paper
Traffic noise is the World’s most prevalent form of environmental noise which negatively affects human health. Traffic noise varies among countries due to differences in many factors, such as vehicle classifications, type and condition of the pavement surface, and metrological conditions. Given the growing interest in environmental noise in United...
Article
This paper quantitatively describes the extent of the road traffic accidents problem in the Emirate of Sharjah, the third largest emirate in UAE, for the period 2001-2014. Several interesting findings were revealed. While Sharjah's population almost doubled during this period, the number of injury/fatality causing accidents decreased by more than h...
Article
Hazardous materials (HAZMATs) routing is a daily activity for organisations involved in transporting HAZMAT shipments to destinations within their jurisdictions. HAZMAT shipments need to be transported safely without posing significant risk to human and environmental health. While traditional routing is based on travel cost, represented by travel t...
Article
Full-text available
Previous research has reported on the need to implement quality control programs for ITS data to address critical issues such as suspicious or erroneous data, nature and extent of missing data, and accuracy and comparability of ITS data to similar data sources. This paper summarizes the work completed to address quality control and completeness iss...
Article
Although transportation data have a spatial component by nature, this component generally has not been fully utilized when it comes to intelligent transportation system (ITS) archived data. This paper demonstrates the use of geographic information system (GIS) to spatially visualize and analyze transportation management center (TMC)-related perform...
Conference Paper
Traffic noise is the world’s most prevalent forms of environmental noise that negatively affects human health. Such noise depends on many factors, such as traffic volume and classification, type of pavement surface, tire types, and metrological conditions. These factors vary from one location to another; thus, there is a need to develop or at least...
Article
Two most challenging problems facing transportation planners and policymakers in many developing countries are rapid urban traffic growth and lack of financial and technical resources to conduct major planning studies, especially for assessing the impacts of new sites and land-uses. The conventional urban transportation planning process, which is d...
Article
Full-text available
Site amplification increases the intensity of ground shak-ing that can occur due to local geological conditions. It does not depend only on the magnitude of the earthquake and the distance from the epicenter, but mainly on local soil proper-ties that can vary considerably due to local geological con-ditions that act as a filter, thereby affecting t...
Article
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Telecommuting is a Transportation Demand Management strategy to partially or completely replace the daily commute with telecommunication technologies. Research has revealed that telecommuting can be effectively done from special places provided for this purpose called telecenters. In telecenter-based telecommuting, trip lengths are shortened due to...
Article
Full-text available
The backbone of any successful Integrated Traffic Management System (ITMS) for a metropolis is reliable, accurate, and real-time data. Travel time, speed, and delay are three of the most important factors used in ITMS for quantifying, monitoring, and controlling congestion. Global Positioning Systems (GPS) have recently become available for civil a...
Article
Accurate short-term prediction of travel speed as a proxy for time is central to many Intelligent Transportation Systems, especially for Advanced Traveler Information Systems and Advanced Traffic Management Systems. In this study, we propose an innovative methodology for such prediction. Because of the inherently direct derivation of travel time fr...
Article
Transportation management centers (TMCs) generate and archive enormous amounts of data. Archived intelligent transportation system (ITS) data applications today tend to focus on ITS data as a resource for transportation planning and/or research, mainly for the generation of aggregated system performance measures such as corridor travel times, speed...
Article
Transportation management centers (TMCs) generate and archive enormous amounts of multimodal transportation data. Archived intelligent transportation system (ITS) data applications today tend to focus on ITS data as a resource for transportation planning and research, mainly to generate aggregated system performance measures such as corridor travel...