Browsing by Author "Dias, Charitha"
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Are Professional Drivers more Aggressive than General Drivers? A Case Study from Doha, Qatar
Dias, Charitha; Kharbeche, Mohamed; Muley, Deepti; Kashem, Abdurahman; AbulFahed, Mohammed; Iral, Sam Verniel; Abdelfattahb, Nooreldeen... more authors ... less authors ( Elsevier B.V. , 2022 , Conference Paper)Previous studies have revealed that aggressive and reckless driving can largely affect the occurrence and severity of road crashes. There could be intentional aggressive and unsafe acts, which could significantly affect ... -
Assessment of turn signal use at two-lane roundabouts in Doha city
Deepti, Muley; Dias, Charitha; Umlai, Al-Harith; AlArdah, Husam; Shah, Mohammad; Murtaza, Mohammad; Abou-sido, Firas... more authors ... less authors ( Elsevier B.V , 2022 , Conference Paper)Turn signal and lane change indicators can be identified as an effective way for drivers to communicate with each other. Additionally, the use of turn signals has significant safety implications. This study explored the ... -
COVID 19 PANDEMIC: IMPACTS AND FUTURE IMPLICATIONS ON PERSONAL TRAVEL BEHAVIOR IN THE STATE OF QATAR
Alhajyaseen, Wael; Hussain, Qinaat; Kharbeche, Mohamed; Dias, Charitha ( Qatar University Press , 2020 , Poster)In December 2019, a novel and contagious coronavirus also known as Covid-19 outbroke in Wuhan, China. In response to the virus, many countries implemented strict travel restrictions and lockdowns to hold back the spread ... -
Crowd Evacuation through Crossing Configurations: Effect of Crossing Angles and Walking Speeds on Speed Variation and Evacuation Time
SayedMohammed, Shabna; Verma, Anshi; Dias, Charitha; Alhajyaseen, Wael; Almukdad, Abdulkarim; Aghabayk, Kayvan... more authors ... less authors ( Multidisciplinary Digital Publishing Institute (MDPI) , 2022 , Article)The design of safe and efficient pedestrian facilities necessitates the knowledge of complex human movements, such as intersecting pedestrian streams, under different conditions. This study aims to experimentally investigate ... -
Defensive or competitive Autonomous Vehicles: Which one interacts safely and efficiently with pedestrians?
Hong, Zhu; Alhajyaseen, Wael; Iryo-Asano, Miho; Nakamura, Hideki; Dias, Charitha ( Elsevier , 2022 , Article)The emergence of Autonomous Vehicles (AVs) could provoke unexpected challenges in urban traffic environments. One such crucial challenge is the conflicts between pedestrians and AVs, particularly on unsignalized mid-block ... -
Effect of U-turns and heavy vehicles on the saturation flow rates of left-turn lanes at signalized intersections
Abuhijleh, Abdelrahman; Dias, Charitha; Alhajyaseen, Wael; Muley, Deepti ( MDPI , 2020 , Article)© 2020 by the authors. The Saturation Flow Rate (SFR) is a primary measure that can be used when estimating intersection capacity. Further, the efficiency of signal control parameters also depends on the accuracy of assumed ... -
Empirical evaluation of change in crash risk due to lane marking reallocation: A case study in Kochi City, Japan
Hiroaki, Nishiuchi; Dias, Charitha; Kawato, Satsuki ( Elsevier , 2023 , Article)Lane markings are considered an essential component of a road system. As highlighted in previous studies, they are directly linked to efficiency and safety. The rearrangement or reallocation of lane markings can be an ... -
Exploratory study on self-awareness and self-preparedness of Malaysian rail passengers for emergency evacuations
Noorhazlinda, Abd Rahman; Johari, Muhammad Syahir Mohd; Dias, Charitha ( Elsevier Ltd , 2022 , Article)This study explores the self-awareness and self-preparedness among Malaysian rail passengers during potential emergency evacuations. A questionnaire survey was carried out at a major rail transit terminal in Kuala Lumpur, ... -
Exploring Crowd Management and Evacuation Strategies using Microscopic Pedestrian Simulation: A Case Study of Souq Waqif
Mohammed, Shabna Sayed; Dias, Charitha; Alhajyaseen, Wael; Alqaradawi, Mohammed Yousef ( Qatar University Press , 2023 , Conference Paper)Safe egress plans are critical for crowd evacuation at touristic attractions, particularly during special events, as visitors are often unaware of their options. Identification of bottlenecks in the walking spaces are vital ... -
Exploring Microscopic Characteristics of Bicycle Riders’ following Behaviors in a Single-File Movement
Dias, Charitha; Abdullah, Muhammad; Hussain, Qinaat; Salehi, Ahmad Mohammadtayeb; Nishiuchi, Hiroaki ( MDPI , 2023 , Article)Cycling can bring a wide range of social, economic, and health benefits to individuals and communities. The safety and efficiency of bicycle facilities can be significantly impacted by the interactions among riders. This ... -
Exploring the impacts of COVID-19 on travel behavior and mode preferences
Abdullah, Muhammad; Dias, Charitha; Muley, Deepti; Shahin, Md. ( ElsevierLtd. , 2020 , Article)Various measures were recommended or imposed by the governments to control the spread of COVID-19. Travel behaviors are significantly influenced due to such measures. However, people have various travel needs ranging from ... -
Exploring the traveler’s intentions to use public transport during the covid-19 pandemic while complying with precautionary measures
Abdullah, Muhammad; Ali, Nazam; Dias, Charitha; Campisi, Tiziana; Javid, Muhammad Ashraf ( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)Public transport use has drastically declined during the COVID-19 pandemic because the virus spreads through close contact with infected people and contaminated surfaces, especially in closed-environments. Evidence suggests ... -
Identifying the relationship between intention to use flat-rate public transport and trip frequency by a discrete-continuous model
Nishiuchi, Hiroaki; Nishimura, Kohei; Ngoc, An Minh; Dias, Charitha ( Springer Nature , 2023 , Article)Public transport fare is a central feature of transit operations and is a key indicator to reflect transport demand. Yet, relatively little is known about how fare influences on ridership dynamics, including for which types ... -
Improved traffic safety at work zones through animation-based variable message signs
Almallah, Mustafa; Hussain, Qinaat; Alhajyaseen, Wael K.M.; Pirdavani, Ali; Brijs, Kris; Dias, Charitha; Brijs, Tom... more authors ... less authors ( Elsevier Ltd , 2021 , Article)Work zones are established to provide a safe environment for all road users and road workers. However, based on the statistics, they can be considered as crash prone zones due to changes in the road alignments and the ... -
Influence of COVID-19 mobility-restricting policies on individual travel behavior in Malaysia
Dias, Charitha; Rahman, Noorhazlinda Abd; Abdullah, Muhammad; Sukor, Nur Sabahiah Abdul ( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)The COVID-19 pandemic has resulted in new postpandemic travel patterns as a result of the stay-at-home policies and restricted movement orders imposed by the Malaysian government. The purpose of this study was to investigate ... -
Interactions between autonomous vehicles and pedestrians at unsignalized mid-block crosswalks considering occlusions by opposing vehicles
Zhu, Hong; Iryo-Asano, Miho; Alhajyaseen, Wael K.M.; Nakamura, Hideki; Dias, Charitha ( Elsevier Ltd , 2021 , Article)Visibility can be identified as one of the critical determinants for the safety performance of autonomous vehicles (AVs) on unsignalized mid-block crosswalks (UMC), which may be significantly influenced by build-up environment ... -
Investigating a university library building evacuation in Pakistan during a semi-announced fire drill
Rafi, Muhammad Masood; Ahmed, Shoaib; Lovreglio, Ruggiero; Dias, Charitha ( John Wiley & Sons , 2022 , Article)Evacuation models represent one of the main tools used to assess building fire safety. Existing evacuation models are based on data from evacuation drills in western and developed countries, while there is a need for data ... -
Lane-based analysis of the saturation flow rate considering traffic composition
Mohammad, Anas A.; Al Nawaiseh, Hazem M.; Alhajyaseen, Wael K.; Dias, Charitha; Mehran, Babak ( Informa UK Limited - Taylor & Francis , 2023 , Article)Saturation flow rate (SFR) is an essential metric for estimating the capacities of signalized intersections. Many factors, including traffic composition, configuration and geometry of the intersection, and driver behavior, ... -
Mega Events and Crowd Evacuation at Tourist Attractions: A Case Study of Souq Waqif using Pedestride Crowd Simulation Tool
Abdelaal, Ali; Dias, Charitha; Sarvi, Majid; Alhajyaseen, Wael; Tarlochan, Faris ( Qatar University Press , 2020 , Poster)Evacuating individuals at large gathering places can be achieved safely and efficiently through the detailed understanding of crowd dynamics within a certain location. Souq Waqif is a major tourist attraction in Qatar that ... -
Modeling Trajectories and Trajectory Variation of Turning Vehicles at Signalized Intersections
DIas, Charitha; Iryo-Asano, Miho; Abdullah, Muhammad; Oguchi, Takashi; Alhajyaseen, Wael ( Institute of Electrical and Electronics Engineers , 2020 , Article)© 2013 IEEE. Information on the trajectories of turning vehicles at signalized intersections can be used in numerous applications, such as movement planning of autonomous vehicles, realistic representation of surrounding ...