Validation and Sensitivity Analysis of a Developed Midblock Vehicular Delay Model

Forde, Albert; Maina, Eugene Vida

doi:10.1061/jtepbs.0000052

Cited by 6 publications

(5 citation statements)

References 8 publications

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“…A model for estimating platoon delay because of pedestrian crossing was validated for use in Kuwait City. The model performed by Forde and Maina (2017) was modified slightly for the scenario found in Kuwait, in which the presence of raised crosswalks meant that all incoming traffic would slow down automatically. Using video footage to observe the site, several variables were collected, and a model was used to calculate the delays suffered by the vehicles because of pedestrian crossing.…”

Section: Discussionmentioning

confidence: 99%

“…The second method was based on modifying the model found by Forde and Maina (2017) which estimates the delay incurred by platoon vehicles because of pedestrian activity at crosswalks. The modification was performed in a way to suit the scenario found in Kuwait City.…”

Section: Methodsmentioning

confidence: 99%

“…To do so, a model for estimating platoon delay due to pedestrian crossing was validated for use in Kuwait City. The model performed by Forde and Maina (2017) was modified to suit the actual scenario found in Kuwait. That scenario being, that the presence of raised crosswalks caused all incoming traffic to slow down automatically.…”

Section: Objectivesmentioning

confidence: 99%

“…The pedestrians' crossing at unsignalized crosswalks cause vehicular delay, forming a platoon. A model estimating the delay incurred by platoon vehicles because of pedestrian activity at crosswalks showed that pedestrian's walking time was the variable to significant impacts on vehicular delays (Forde and Maina, 2017). While Bonneson and Fitts (1999) predicted the delay in vehicles through the development of four models: a lane flow-rate model, a merge capacity model, a merge-delay model and an overflow probability model.…”

Section: Crossing Pedestrian On Platoon Vehiclesmentioning

confidence: 99%

See 3 more Smart Citations

Assessment of pedestrian-vehicular interaction at un-signalized intersections to measure the delay caused by crossing pedestrian on platoon vehicles

AlKheder

Al-Kandari

Aladwani

et al. 2023

SRT

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Purpose This study aims to validate a model for estimating platoon delay due to pedestrian crossing for use in Kuwait City. Design/methodology/approach The model was modified slightly for the scenario used in Kuwait, in which the presence of raised crosswalk meant that all incoming traffic would slow down automatically. Using video footage to observe the site, several variables were collected, and a model was used to calculate the delays suffered by the vehicles because of pedestrian crossing. The model was validated using the actual footage and manual observation to measure the delays. Findings The model showed a good match fit to the observed data, as the average delays differed by 22.5% between the two methods. Following the comparison, a sensitivity analysis was made on three variables: the acceleration rate, deceleration rate, as well as the pedestrian walking time. The analysis has shown that deceleration rate has approximately twice the effect on the model than the acceleration rate has. It has also shown that the pedestrian walking time has a major effect on the model, in an almost one-to-one correlation. A 50% change of the pedestrian walking time is associated with approximately 50% change in the model’s output delay. Originality/value A model for estimating platoon delay because of pedestrian crossing was validated for use in Kuwait City. The model was modified slightly for the scenario used in Kuwait, in which the presence of raised crosswalk meant that all incoming traffic would slow down automatically.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Objectivesmentioning

confidence: 99%

Section: Crossing Pedestrian On Platoon Vehiclesmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of pedestrian-vehicular interaction at un-signalized intersections to measure the delay caused by crossing pedestrian on platoon vehicles

AlKheder

Al-Kandari

Aladwani

et al. 2023

SRT

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show abstract

“…The quantitative validation involves performing t-test using Microsoft Excel by comparing the actual output data and the simulation results (status quo) (Forde and Maina 2017). The actual data output is obtained from the LSP and the Farmer Group Packing house.…”

Section: Model Verification and Validationmentioning

confidence: 99%

Fresh agricultural product logistics network governance: insights from small-holder farms in a developing country

Perdana

Tjahjono

Kusnandar

et al. 2022

International Journal of Logistics Research and Applications

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Fresh agricultural products (FAPs) require special handling to maintain product quality, especially during socio-economic crises. In developing countries, there is a compelling need for a robust supply chain governance strategy to regulate the supply chain actors involved in the logistics and distribution system. This paper proposes an innovative way to design FAP logistics governance to address specific problems in the FAP logistics networks of developing countries, where FAP supply chains are not well integrated. Three logistics governance scenarios were modelled using discrete-event simulation. The results revealed that the fully distributed governance could effectively reduce process delay and consequently minimise logistics costs, especially within the logistics networks serving multiple markets. This is due to that fact that the distributed governance allows the actors involved in the network to have some autonomy to manage their resources. The paper contributes to improving the fundamental understanding of the governance for FAP logistics networks consisting of small-holder farms. Our work also offers valuable insights for policymakers and practitioners into how to improve FAP supply chain management.

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Development of Pedestrian Crossing Facility Warrants for Urban Midblock Crosswalks Based on Vehicular Delay

Golakiya¹,

Dhamaniya

2021

Transp. in Dev. Econ.

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Validation and Sensitivity Analysis of a Developed Midblock Vehicular Delay Model

Cited by 6 publications

References 8 publications

Assessment of pedestrian-vehicular interaction at un-signalized intersections to measure the delay caused by crossing pedestrian on platoon vehicles

Assessment of pedestrian-vehicular interaction at un-signalized intersections to measure the delay caused by crossing pedestrian on platoon vehicles

Fresh agricultural product logistics network governance: insights from small-holder farms in a developing country

Development of Pedestrian Crossing Facility Warrants for Urban Midblock Crosswalks Based on Vehicular Delay

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