Development of Freeway Weaving Areas Microsimulation Model (FWASIM)

Alkubaisi, Mahdi

doi:10.13189/cea.2020.080527

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…This study contributes to formulating policies or regulations in the field of land transport, especially at signalized intersections to maximize the mobility of passenger and logistics transport. Besides, this study results may be used as input for the development of traffic simulation models and software [17], especially for mixed traffic dominated by motorcycles.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Motorcycles on Discharge Headway and Saturation Flows at Signalized Intersections under Mixed Traffic Conditions

Suweda¹,

Wedagama²

2021

cea

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The high proportion of motorcycles and lack of lane discipline at signalized intersections under mixed traffic conditions are the motivation to conduct this study. The discharge headway models are constructed at three (3) signalized intersections in the SARBAGITA urban area in Bali. The result shows that motorcycles affect saturation flow due to their shorter headway than light vehicles while increasing discharge headway of other vehicles. The discharge headway between pairs of heavy vehicles is longer than these of motorcycles due to their slower acceleration at signalized intersections. This study also found that the discharge headway plays a significant role in determining the saturation flow and capacity of a signalized intersection. If a heavy vehicle is one of the pairs, then it has the potential to have a headway exceeding the other vehicle pairs. This indicates, however, that the higher proportion of motorcycles at the signalized intersection approach does not necessarily mean shorter discharge headway. There may be other influencing factors, such as the riding behavior of motorcyclists. The dominance of motorcycles can affect the value of the saturated flow, but an increase in the proportion of heavy vehicles may reduce the effect of motorcycles on the saturation flows.

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Section: Introductionmentioning

confidence: 99%

The Influence of Motorcycles on Discharge Headway and Saturation Flows at Signalized Intersections under Mixed Traffic Conditions

Suweda¹,

Wedagama²

2021

cea

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Weather-Based Lane-Change Microsimulation Parameters for Safety and Operational Performance Evaluation of Weaving and Basic Freeway Segments

Das

Ahmed

2022

Transportation Research Record: Journal of the Transportation R

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It is well recognized that adverse weather conditions have significant negative impacts on safety and mobility of transportation systems. Microsimulation modeling has emerged as a cost-effective tool to quantify the safety and operational effects arising from adverse weather. Developing a realistic microsimulation model necessitates adjusting driving behavior models through trajectory-level data. This study contributes a methodology to update lane-change parameters to develop weather-specific microsimulation models based on different freeway facilities, and ultimately evaluate the safety and operational performance of the roadways. Representative parameters in various weather and facility types were extracted using an automated process. As part of the comprehensive assessment of the adjusted parameters, a weaving section and a basic freeway segment on Interstate 80 in Wyoming were identified as potential candidates. The safety and operational analyses were conducted using VISSIM. Various simulation scenarios were designed based on the field traffic flow data. The safety analysis using three surrogate measures of safety including time-to-collision, deceleration rate to avoid collision, and post encroachment time revealed that adverse weather generated a higher number of conflicts than did clear weather for both facilities. The operational analysis suggested that adverse weather produced lower average speed and higher total travel time and delay than clear weather. The demonstrated methodology could be used in assessing various connected vehicle applications associated with lane change in microsimulation from safety and operational perspectives and could be adopted by transportation agencies to develop weather-based microsimulation models.

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Development of Freeway Weaving Areas Microsimulation Model (FWASIM)

Cited by 2 publications

References 5 publications

The Influence of Motorcycles on Discharge Headway and Saturation Flows at Signalized Intersections under Mixed Traffic Conditions

The Influence of Motorcycles on Discharge Headway and Saturation Flows at Signalized Intersections under Mixed Traffic Conditions

Weather-Based Lane-Change Microsimulation Parameters for Safety and Operational Performance Evaluation of Weaving and Basic Freeway Segments

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