Pedestrian safety at signalized intersections: Modelling spatial effects of exposure, geometry and signalization on a large urban network

Stipancic, Joshua; Miranda-Moreno, Luis F.; Strauss, Jillian; Labbe, Aurélie

doi:10.1016/j.aap.2019.105265

Cited by 31 publications

(14 citation statements)

References 54 publications

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“…[16] In another study, it was determined that intersections were the most dangerous location for incidents, though, in this study, it was determined that the main road was the most dangerous location. [17] Previous studies have noted an increase in pedestrian accidents as a result of urbanization and the increased vehicle population. Urban areas, fatalities at non-intersection, and darkness had all been identified as contributing to accidents.…”

Section: Association Between Experiencing Pain and The Sex Of The Patient And Desire To Pursue Legal Actionmentioning

confidence: 99%

Evaluation of Medico-Legal Implications and Other Important Issues in Pedestrians Who Got Admitted to a Tertiary Care Hospital in Colombo District Following Road Traffic Injuries in 2018-2020

Ariyarathna

2021

Medico-Legal J SL

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Introduction:The most vulnerable road users are pedestrians. This article discusses important aspects of a few selected medico-legal issues that have received relatively little attention in Sri Lanka thus far.Methodology: A cross-sectional study was conducted in which 500 patients who were admitted to the Accident Service Unit (ASU) following pedestrian-vehicle collisions between January 2018 and January 2020.Results: There were 78% (n=391) males among the victims, and the average age of the victims was 47 years. Forty-five percent (n=224) of the incidents occurred between 6 p.m. and 6 a.m., accounting for 71% of the total. Five percent (n=25) of them had encountered an incident while crossing pedestrian lines. Fourteen percent of pedestrians admitted that the accident was their fault. Eight percent (n=39) had insurance coverage, and 54% (n=272) indicated a desire to pursue compensation through litigation. Forty percent (n= 202) correctly identified the court to which they needed to go to obtain compensation. The JMO's (Judicial Medical Officer) role was not well understood, and only 04% (n=19) were aware of it precisely. Fifty six percent sustained grievous injuries and 61% of participants had been referred to other specialities for expert opinions while being treated in the Accident Service Unit (ASU). Eighty-five percent (n=427) of patients underwent surgery, and the majority stated that they were not adequately informed about the surgical procedures before surgery. Six percent (n=29) stated that they were not in pain. There was a statistically significant correlation between age and sex and the severity of the injuries sustained. The time of the accident and the fact that it occurred while crossing the road demonstrated a significant association, whereas alcohol consumption and the fact that it occurred on a pedestrian crossing did not. There was no statistically significant difference in the amount of pain experienced by males and females. When patients reached an advanced age, they became less likely to pursue compensation claims. Conclusion:The health sector was burdened with a huge number of pedestrian victims upon traffic-related injuries and the majority of victims suffered injuries either grievous or above in categorization of hurt. The knowledge of the service provided by a JMO and the court system was insufficient. Identification of peculiarities among victims helps to minimize casualties by addressing specific aspects.

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Section: Association Between Experiencing Pain and The Sex Of The Patient And Desire To Pursue Legal Actionmentioning

confidence: 99%

Evaluation of Medico-Legal Implications and Other Important Issues in Pedestrians Who Got Admitted to a Tertiary Care Hospital in Colombo District Following Road Traffic Injuries in 2018-2020

Ariyarathna

2021

Medico-Legal J SL

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“…These interventions can help protect pedestrians by reducing the amount of time they spend in the roadway by reducing crossing distances, providing more dedicated walking space along roadways, making pedestrians more visible to drivers and reducing motor vehicle speeds. [6][7][8][9][10][11][12] The presence of pedestrian refuge islands, a smaller number of lanes and widening of sidewalks has been associated with lower risk of pedestrian exposure to vehicle traffic and fewer pedestrian crashes at intersections. [6][7][8] Likewise, evaluation studies of multicomponent geometric design improvement and vehicle flow reduction interventions implemented in cities in developed countries show a significant decrease in the number of pedestrian crashes.…”

Section: Original Researchmentioning

confidence: 99%

“…[6][7][8][9][10][11][12] The presence of pedestrian refuge islands, a smaller number of lanes and widening of sidewalks has been associated with lower risk of pedestrian exposure to vehicle traffic and fewer pedestrian crashes at intersections. [6][7][8] Likewise, evaluation studies of multicomponent geometric design improvement and vehicle flow reduction interventions implemented in cities in developed countries show a significant decrease in the number of pedestrian crashes. [10][11][12] The effectiveness of these interventions could be influenced by the built environment, the characteristics of the roads, motor vehicle and pedestrian traffic and the combination of interventions implemented.…”

Section: Original Researchmentioning

confidence: 99%

One-year impact of a multicomponent, street-level design intervention in Mexico City on pedestrian crashes: a quasi-experimental study

Cárdenas-Cárdenas

Gutiérrez

Quistberg

et al. 2022

J Epidemiol Community Health

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BackgroundMexico City implemented thePasos Segurosprogramme to prevent pedestrian injuries and deaths at dangerous road intersections, which included street-level design changes, such as visible pedestrian crossings, sidewalk widening, refuge islands, lane reductions, pedestrian signals and adjustment of traffic light timing at these intersections. Few studies in low and middle-income countries (LMICs) have evaluated the effect of such interventions on pedestrian safety.AimAssess the effectiveness of thePasos Segurosprogramme at reducing total, injury and fatal pedestrian-motor vehicle crashes.MethodsTwo-group quasi-experimental design. Monthly pedestrian crashes were obtained from the road incident database from Mexico City’s Citizen Contact Center. The programme’s effectiveness was evaluated by comparing 12 months preintervention to 12 months postintervention implementation using a negative binomial regression with random intercept with a difference-in-difference estimation. A qualitative comparative analysis was used to find the configuration of intersection characteristics and programme components associated with a decrease in pedestrian crashes.ResultsTotal pedestrian crashes were reduced by 21% (RR 0.79; 95% CI 0.62 to 0.99) after implementation ofPasos Segurosprogramme. This reduction was observed for pedestrian injury crashes (RR 0.79; 95% CI 0.62 to 1.00) and for fatal crashes (RR 0.61; 95% CI 0.13 to 2.92) although not statistically significant for the latter. A decrease in pedestrian crashes was found at the most complex intersections where more of the programme components was implemented.ConclusionThePasos Segurosprogramme successfully decreased total and injury pedestrian crashes. Similar interventions may improve walking safety in other LMIC cities.

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“…For instance, by analyzing the vehicles’ trajectory and amount of delay that vehicles face during their trip, the intersection flow and signal performance are evaluated, and recommendations are considered for optimizing the intersection’s design and signals [ 2 ]. Moreover, count data estimation can assist transportation engineers with gauging the capacity of the current design and redesigning the current intersection based on different factors such as exposure, geometry, and signalization to minimize road users’ waiting time while improving their level of safety [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Turning Movement Count Data Integration Methods for Intersection Analysis and Traffic Signal Design

Shirazi

Chang

Tayeb

2022

Sensors

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Traffic simulation is widely used for modeling, planning, and analyzing different strategies for traffic control and road development in a cost-efficient manner. In order to perform an intersection simulation, random vehicle trip data are typically applied to an intersection network, making them unrealistic. In this paper, we address this issue by presenting two different methods of incorporating actual turning movement count (TMC) data and comparing their similarity for intersection simulation and analysis. The TMC of three intersections in Las Vegas are estimated separately for one hour using a developed vision-based tracking system and they are incorporated into Simulation of Urban MObility (SUMO) for estimating traffic measurements and traffic signal design. t-tests with a 95% confidence interval on the simulation variables demonstrate the importance of using a route-based creation method which injects vehicles into a simulation environment based on the frame-level departure time. The intersection analyses and comparisons are performed based on estimated traffic measurements such as travel time, density, lane density, occupancy, and normalized waiting time. Since the critical edge of each intersection network is identified based on a higher normalized waiting time, new traffic signal designs are suggested based on the actual critical turning movements and improvements in vehicle travel time are achieved to better accommodate the actual traffic demand.

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Pedestrian safety at signalized intersections: Modelling spatial effects of exposure, geometry and signalization on a large urban network

Cited by 31 publications

References 54 publications

Evaluation of Medico-Legal Implications and Other Important Issues in Pedestrians Who Got Admitted to a Tertiary Care Hospital in Colombo District Following Road Traffic Injuries in 2018-2020

Evaluation of Medico-Legal Implications and Other Important Issues in Pedestrians Who Got Admitted to a Tertiary Care Hospital in Colombo District Following Road Traffic Injuries in 2018-2020

One-year impact of a multicomponent, street-level design intervention in Mexico City on pedestrian crashes: a quasi-experimental study

Turning Movement Count Data Integration Methods for Intersection Analysis and Traffic Signal Design

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