Investigation of Using Microscopic Traffic Simulation Tools to Predict Traffic Conflicts Between Right-Turning Vehicles and Through Cyclists at Signalized Intersections

AlRajie, Haitham

doi:10.22215/etd/2015-11179

Cited by 2 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…VISSIM software package was selected to simulate traffic operations (PTV 2011). The capability of VISSIM model in reproducing accurately traffic and bicycle operations at microscale for intersections is one of the main advantages of this traffic model (Mok et al 2013;AlRajie 2015). Simulation experiments was made for the analysis period between 8:20 p.m. and 9:30 p.m. with a 10-min "warmup" period prior to 8:30 p.m. to load the road network adequately with corresponding traffic and bicycle flows.…”

Section: Traffic Modellingmentioning

confidence: 99%

Cycling at Intersections: A Multi-Objective Assessment for Traffic, Emissions and Safety

2019

View full text Add to dashboard Cite

This paper evaluated in an integrated manner the traffic performance, pollutant emissions and road conflicts between bicycles and motor vehicles at a signalized intersection. Two alternative scenarios were examined: (1) bicycles increment and motor vehicles replacement within the cycle-fixed traffic signal; (2) replacing the existing traffic control by a conventional two-lane roundabout and evaluating the impacts of bicycles increment. For each scenario, bicycle demand was varied from 9 to 270 bicycles per hour (bph). Traffic flow and vehicle dynamic data were collected from a three-leg signalized intersection in Aveiro (Portugal). The microscopic traffic model (VISSIM) paired with an emission (Vehicle Specific Power – VSP) methodology and safety (Surrogate Safety Assessment Methodology – SSAM) model were used to assess intersection-specific operations. The fast Non-Dominated Sorting Genetic Algorithm (NSGA-II) was used to find the optimal bicycle demands. The results showed that two-lane roundabout outperformed the existing traffic control, namely in highest bicycle demand scenario (number of stops and travel time reduced in 78 and 14%, respectively; CO2, NOx, and HC decreased 9, 7, and 12%, respectively). It was also found that the number of conflicts was significantly reduced (–49%) with this latter layout even in maximum bicycle demand scenario (270 bph). However, roundabout layout lead to more severe conflicts and potential crashes. The analysis showed that bicycle demands of 75, 95 and 110 bph delivered good environmental and safety outcomes for the intersection.

show abstract

Section: Traffic Modellingmentioning

confidence: 99%

Cycling at Intersections: A Multi-Objective Assessment for Traffic, Emissions and Safety

2019

View full text Add to dashboard Cite

show abstract

“…There are many studies that have applied this methodology to the rural environment, with many different aims. However, there are few that use traffic microsimulation including motorized vehicles and cyclists, and all of them were developed in an urban context [22][23][24]. As a far as the authors are aware, microsimulation has not been used to evaluate the impact of interurban cycling.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of Sport Cyclists on Narrow Two-Lane Rural Roads Using Instrumented Bicycles and Microsimulation

2021

View full text Add to dashboard Cite

It is frequent to see cyclists on Spanish two-lane rural roads, both riding individually and in groups. However, these roads were designed only for motorized vehicles, most of them having a narrow section with a null or impassable shoulder. Currently, drivers and cyclists have to share roads and interact, affecting both safety and traffic operation. The possibility of overtaking offers an improvement in traffic operation, however on narrow roads it can be difficult, meaning a greater invasion of the opposite lane thus creating more dangerous situations and implying a higher overtaking duration. To analyze the phenomenon, field data from instrumented bicycles and naturalistic videos were collected, then some performance measures to characterize safety and traffic operation were obtained. To increase the number of overtaking manoeuvres and performance measures obtained from observations, microsimulation has been used by adapting a model to include cyclists and their interaction with motorized vehicles. The traffic microsimulator was calibrated and validated with field data. The results show that cycle traffic presence decreases motorized vehicle average travel speed and increases percent followers and delays. Microsimulation can be used to study other traffic scenarios and can help road administrations to safely and efficiently integrate cyclists to vehicular traffic on rural roads.

show abstract

Investigation of Using Microscopic Traffic Simulation Tools to Predict Traffic Conflicts Between Right-Turning Vehicles and Through Cyclists at Signalized Intersections

Cited by 2 publications

References 16 publications

Cycling at Intersections: A Multi-Objective Assessment for Traffic, Emissions and Safety

Cycling at Intersections: A Multi-Objective Assessment for Traffic, Emissions and Safety

Analysis of the Influence of Sport Cyclists on Narrow Two-Lane Rural Roads Using Instrumented Bicycles and Microsimulation

Contact Info

Product

Resources

About