Browsing Qatar Transportation and Traffic Safety Center by Title
Now showing items 160-179 of 237
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Pedestrian crashes at priority-controlled junctions, roundabouts, and signalized junctions: The UK case study
( Taylor and Francis Inc. , 2019 , Article)Objectives: Over half of pedestrians killed and seriously injured in Great Britain in 2015 were involved in crashes at junctions. This study investigates the nature of these crashes. Methods: A study was conducted into ... -
Pedestrian flow characteristics through different angled bends: Exploring the spatial variation of velocity
( Public Library of Science (PLOS) , 2022 , Article)Common geometrical layouts could potentially be bottlenecks, particularly during emergency and high density situations. When pedestrians are interacting with such complex geometrical settings, the congestion effect might ... -
Pedestrians' Crossing Behavior at Marked Crosswalks on Channelized Right-Turn Lanes at Intersections
( Elsevier B.V. , 2017 , Conference Paper)Unsignalized marked crosswalks are problematic locations from pedestrians' safety perspective. Although the priority rule at such locations is clear; pedestrians have the absolute right of way over vehicles, driver often ... -
Pedestrians' Speed Analysis at Signalized Crosswalks
( Elsevier B.V. , 2018 , Conference Paper)Pedestrian speed is essential for designing signal timings as well as for understanding pedestrian safety issues. This paper presents analysis of three types of pedestrian speeds (entry speed, crossing speed, and exit ... -
Pedestrians’ Microscopic Walking Dynamics in Single-File Movement: The Influence of Gender
( MDPI , 2022 , Article)Demographics of individuals could largely influence their behaviors and interactions with surrounding pedestrians. This study investigates the influence of pedestrians’ gender on microscopic walking dynamics of single-file ... -
Penalized Conway-Maxwell-Poisson regression for modelling dispersed discrete data: The case study of motor vehicle crash frequency
( Elsevier B.V. , 2019 , Article)Statistical modelling of road crashes has been of extreme interest to researchers over the last decades. Such models are necessary for the investigation of the opportunities for road safety improvement. The motor vehicle ... -
Performance evaluation of the inside intersection median-turn lane markings on the mobility and safety performance of signalized intersections in the Philippines and Japan
( Elsevier B.V. , 2018 , Article)Signalized intersections are one of the key elements that play a vital role at road networks. The efficiency and safety levels of intersections can affect the operational performance of the whole system. In general, turning ... -
Performance Evaluation of Vehicle Restraint Systems in the Context of Design and Installation
(2021 , Article)Vehicle Restraint Systems (VRS), a necessary component of the road design, are widely implemented by transport authorities to protect vehicles from severe incidents, mainly colliding to the roadside as well as median ... -
Planning and Optimizing Electric-Vehicle Charging Infrastructure Through System Dynamics
( IEEE , 2022 , Article)One of the key solutions to address the issue of energy efficiency and sustainable mobility is to integrate plug-in electric vehicle (EV) infrastructure and photovoltaic (PV) systems. The research proposes a comprehensive ... -
Prediction of Traffic Conflicts at Signalized Intersections using SSAM
( Elsevier , 2018 , Article)The use of microsimulation to model the vehicles movement and pedestrian movements within a traffic network is widely undertaken to test and evaluate operational performance of a traffic network under different traffic ... -
Promoting cycling activities in the State of Qatar: Challenges and potential treatments
( Elsevier B.V. , 2022 , Article)In the last few decades, cycling has received an increased attention due to its health, social, and economical benefits. Many countries are adopting different policies to encourage cycling as a daily mode of transport. In ... -
Public transport versus solo travel mode choices during the COVID-19 pandemic: Self-reported evidence from a developing country
( Elsevier , 2021 , Article)A sharp decline in public transport use has been reported worldwide since the outbreak of the COVID-19 pandemic. As the virus spreads through close contacts, particularly in closed environments, public transport vehicles ... -
Quantifying the impact of COVID–19 preventive measures on traffic in the State of Qatar
( Elsevier , 2021 , Article)Ever since the beginning of 2020, the mobility of people and goods all over the world has been extremely limited as a result of movement restrictions imposed by local authorities as part of several other efforts to stop ... -
Queue Discharge at Freeway On-Ramps Using Coordinated Operation of a Ramp Meter and an Upstream Traffic Signal
( Elsevier , 2020 , Conference Paper)Ramp metering is an effective way of maintaining optimum traffic conditions and mitigating congestion on freeways. Several strategies for ramp metering exist in the literature. They are typically based on the freeway traffic ... -
Real-time Driver Drowsiness Detection for Android Application Using Deep Neural Networks Techniques
( Elsevier B.V. , 2018 , Conference Paper)Road crashes and related forms of accidents are a common cause of injury and death among the human population. According to 2015 data from the World Health Organization, road traffic injuries resulted in approximately 1.25 ... -
Rebound effects undermine carbon footprint reduction potential of autonomous electric vehicles
( Springer Nature , 2023 , Article)Autonomous vehicles offer greater passenger convenience and improved fuel efficiency. However, they are likely to increase road transport activity and life cycle greenhouse emissions, due to several rebound effects. In ... -
Regional Well-to-Wheel Carbon, Energy, and Water Footprint Analysis of Electric Vehicles
( Atlantis Press , 2018 , Conference Paper)Adoption of alternative vehicle technologies such as electric vehicles (EVs), plug-in hybrid electric vehicles (PHEVs), and hybrid electric vehicles (HEVs) have the potential of reducing some of the environmental impacts ... -
Relating reactive and proactive aggression to trait driving anger in young and adult males: A pilot study using explicit and implicit measures
( MDPI , 2021 , Article)Driving anger and aggressive driving are main contributors to crashes, especially among young males. Trait driving anger is context-specific and unique from other forms of anger. It is necessary to understand the mechanisms ... -
Relationship between Chauffeurs' Demographics, and Knowledge of Traffic Signs in the Kingdom of Saudi Arabia
( Elsevier B.V. , 2018 , Conference Paper)Authorities in the Kingdom of Saudi Arabia (KSA) are investing heavily on developing Intelligent Transport Systems, which includes installations of Variable Message Signs (VMS) for the road users. However, it is challenging ... -
A reliability-based weather-responsive variable speed limit system to improve the safety of rural highways
( Elsevier , 2022 , Article)Weather-responsive Variable Speed Limit (WRVSL) systems treat speed limits as weather-dependent random variables, as opposed to the conventional static speed limits. This study (i) evaluates drivers’ response to a fixed ...