Identification of freeway secondary accidents with traffic shock wave detected by loop detectors

Wang, Junhua; Xie, Wenjing; Liu, Boya; Fang, Sheng; Ragland, David R

doi:10.1016/j.ssci.2016.04.015

Cited by 32 publications

(11 citation statements)

References 13 publications

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“…The study of the propagation mechanism of accident impact has been a focus for scholars from various countries, who have been have been unremittingly exploring the dimensions of the question, including: using the accident delay value [7,8] to determine the maximum spatial impact range and congestion duration of the accident [9,10] and capturing the dynamic operation process of accidents and predicting the spatiotemporal evolution caused by accident, which is helpful in measuring the potential impact of accident congestion [11,12]. Further, the degree of congestion caused by an accident can be estimated by detecting the relationship between factors related to the accident or elements of the accident itself (such as the type of accident, the time of the accident, weather conditions, and road conditions) [13,14].…”

Section: Literature Review 21 Propagation Mechanism Of Accidents Impactmentioning

confidence: 99%

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Ellipse-Like Radiation Range Grading Method of Traffic Accident Influence on Mountain Highways

Wang

Long

et al. 2022

Sustainability

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To improve the efficiency of accident treatment on mountain highways and reduce the degree of disruption from traffic accidents, the grading method of the ellipse-like radiation range of traffic accident impact is proposed. First, according to the propagation law of traffic accidents, the general function of mountain highways affected by traffic accidents was constructed based on the Gaussian plume model. Then, based on the gravity field theory, the influence of the accident source point on the accident road was analyzed in the aftermath of a supposed accident. Additionally, considering the cascading failure of the road network, the influence of the accident-intersecting roads was demarcated by the cascading failure load propagation function. Based on this analysis, the ellipse-like radiation range models of traffic accidents on the accident road and the intersecting roads were proposed, respectively. Next, the adjustment parameter was further introduced to incorporate the different levels of influence of traffic accidents on the surrounding road network into the model, and the grading impacts of the accident on the potentially utilized opposite lane were discussed. Finally, according to the queuing theory model, simulation design, and portability analysis, the accuracy of the ellipse-like radiation range grading model was verified. The research results show that, compared with queuing theory and simulation results, the error of the grading model of the ellipse-like radiation range affected by traffic accidents was within a reasonable range; that is, the model can reasonably quantify the difference of traffic accident propagation on the accident road and the intersecting roads. Moreover, the heterogeneity of traffic accident propagation was verified by taking the non-occupied opposite lanes as an example. The grading method of influence radiation range utilized for traffic accidents on mountain highways can quickly provide corresponding auxiliary decision support for accident rescue within varying influence ranges.

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Section: Literature Review 21 Propagation Mechanism Of Accidents Impactmentioning

confidence: 99%

“…Step 3 performs the distribution and calculation of the failure load. At time t + 1, the load of the failure section is assigned to the connected road according to Equation (12), and the load of the road at time t + 1 is calculated by combining Equation (10), where ε is 0.2, and p e 13 = 269, p e 14 = 274.…”

Section: Accident-intersecting Road Range Calculationmentioning

confidence: 99%

Ellipse-Like Radiation Range Grading Method of Traffic Accident Influence on Mountain Highways

Wang

Long

et al. 2022

Sustainability

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“…Conforme fluxograma lógico da Figura 4, um SGTI eficiente (Estágio 1) tem como principais objetivos: (i) minimizar o impacto dos incidentes; e (ii) otimizar o uso da infraestrutura existente, conforme apresentado no Estágio 2. Os principais impactos negativos dos incidentes de acordo com os estudos atuais são: (i) aumento do número de acidentes, devido aos acidentes secundários (WANG et al, 2016;YANG et al, 2017;JUNHUA et al, 2016); (ii) atrasos nos tempos de viagem (BARDAL e JORGENSEN, 2017;JAVID e JAVID, 2018;HOJATI et al, 2016); (iii) os custos associados a eles devido ao congestionamento gerado (KABIT et al, 2014); e (iv) problemas de saúde pública (CONDERINO et al, 2017).…”

Section: Relação Entre Sgit E Os Odsunclassified

O Papel Do Gerenciamento De Incidentes De Tráfego No Atendimento Aos Objetivos De Desenvolvimento Sustentável

2022

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Um Sistema de Gerenciamento de Incidentes de Tráfego (SGIT) constitui-se em uma importante estratégia para redução dos impactos do setor de transportes rodoviário no desenvolvimento sustentável. Isso porque os incidentes de tráfego são eventos que geram congestionamentos não recorrentes que causam redução da capacidade viária, aumento do tempo de viagem, aumento da emissão de poluentes do ar e Gases de Efeito Estufa, redução da qualidade de vida da população urbana etc. Dessa forma, este estudo busca destacar, por meio de revisão da literatura e desenvolvimento de um fluxograma lógico, como um SGIT eficaz pode contribuir para o alcance de muitos Objetivos de Desenvolvimento Sustentável (ODS) e suas metas da Agenda 2030 para o Desenvolvimento Sustentável. Os resultados mostram que um bom SGIT é capaz de impactar positivamente 9 ODS e 25 metas da Agenda 2030, demostrando assim que os governos devem investir em ações e políticas públicas que possam melhorar os SGIT.

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“…Spatio-temporal impact area methods based on speed contour plot Imprialou et al 43 Dynamic Automatic tracking of moving jams Park et al 44 Dynamic Vehicle probe data Sarker et al 45 , Mishra et al 46 , Junhua et al 47 , Wang et al 48…”

Section: Dynamicmentioning

confidence: 99%

Point-Process modeling of Secondary Crashes

Motagi¹,

Namilae²,

Gbaguidi³

et al. 2021

Preprint

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Secondary crashes or crashes that occur in the wake of a preceding or primary crash are among the most critical incidents occurring on highways, due to the exceptional danger they present to the first responders and victims of the primary crash. In this work, we developed a self-exciting temporal point process to analyze crash events data and classify it into primary and secondary crashes. Our model uses a self-exciting function to describe secondary crashes while primary crashes are modeled using a background rate function. We fit the model to crash incidents data from the Florida Department of Transportation, on Interstate-4 (I-4) highway for the years 2015-2017, to determine the model parameters. These are used to estimate the probability that a given crash is secondary crash and to find queue times. To represent the periodically varying traffic levels and crash incidents, we model the background rate, as a stationary function, a sinusoidal non-stationary function, and a piecewise non-stationary function. We show that the sinusoidal non-stationary background rate fits the traffic data better and replicates the daily and weekly peaks in crash events due to traffic rush hours. Secondary crashes are found to account for up to 15.09% of the traffic incident, depending on the city on the I4 Highway.

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Identification of freeway secondary accidents with traffic shock wave detected by loop detectors

Cited by 32 publications

References 13 publications

Ellipse-Like Radiation Range Grading Method of Traffic Accident Influence on Mountain Highways

Ellipse-Like Radiation Range Grading Method of Traffic Accident Influence on Mountain Highways

O Papel Do Gerenciamento De Incidentes De Tráfego No Atendimento Aos Objetivos De Desenvolvimento Sustentável

Point-Process modeling of Secondary Crashes

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