Empirical Analysis of the Macroscopic Characteristics of Bicycle Flow during the Queue Discharge Process at a Signalized Intersection

Goñi-Ros, Bernat; Yuan, Yufei; Daamen, Winnie; Hoogendoorn, Serge P.

doi:10.1177/0361198118790637

Cited by 8 publications

(12 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In some cases, such as in mixed traffic, roundabouts can impose delays on cyclists [188]. Additionally, in node studies, evaluating and considering the effect of queuing and its impact on the BLOS might be helpful [189,190].…”

Section: Discussionmentioning

confidence: 99%

Expanding the Scope of the Bicycle Level-of-Service Concept: A Review of the Literature

et al. 2020

View full text Add to dashboard Cite

Research into the bicycle level-of-service (BLOS) has been extensively conducted over the last three decades. This research has mostly focused on user perceptions of comfort to provide guidance for decision-makers and planners. Segments and nodes were studied first, followed by a network evaluation. Besides these investigations, several variables have also been utilized to depict the users’ perspectives within the BLOS field, along with other cycling research domains that simultaneously scrutinized the users’ preferences. This review investigates the variables and indices employed in the BLOS area in relation to the field of bicycle flow and comfort research. Despite general agreement among existing BLOS variables and the adopted indices, several important research gaps remain to be filled. First, BLOS indices are often categorized based on transport components, while scarce attention has been paid to BLOS studies in trip-end facilities such as bicycle parking facilities. The importance of these facilities has been highlighted instead within research related to comfort. Second, the advantages of separated bike facilities have been proven in many studies; however, scarce research has addressed the challenges associated with them (e.g., the heterogeneity within those facilities due to the presence of electric bikes and electric scooters). This issue is clearly noticeable within the research regarding flow studies. Furthermore, network evaluation (in comparison to segment and node indices) has been studied to a lesser extent, whereas issues such as connectivity can be evaluated mainly through a holistic approach to the system. This study takes one step toward demonstrating the importance of the integration of similar research domains in the BLOS field to eliminate the aforementioned shortcomings.

show abstract

Section: Discussionmentioning

confidence: 99%

Expanding the Scope of the Bicycle Level-of-Service Concept: A Review of the Literature

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Typical characteristics are capacity, critical density, and jam density, among others. Only a few values have been reported on jam density, all varying around 0.6 bic/m 2 [9,11,12]. e reported maximum flow rate, or capacity, shows more variation.…”

Section: Related Workmentioning

confidence: 99%

The Influence of Jam Density and Merging Cyclists on the Queue Discharge Rate

Wierbos

Knoop

Goñi-Ros

et al. 2020

Journal of Advanced Transportation

View full text Add to dashboard Cite

An increasing number of people use the bicycle for urban trips resulting in local congestion at intersections, especially during peak hours. Understanding the queue dynamics is key to find the correct measures that can reduce the delays for cyclists without affecting other traffic modes. To this end, the discharge process of bicycle queues is studied, focusing on the impact of jam density on the queue discharge rate and how this process is affected by cyclists that merge into the queue during the discharge phase. The impact of merging cyclists is captured by a newly introduced bicycle equivalent (BE) value. This direction-specific BE value is used to convert a merging cyclist into a cyclist that is waiting in the original queue. Results show that the queue discharge rate increases with increasing density of the queue. Furthermore, cyclists that merge by overtaking contribute to the queue discharge rate, while cyclists who merge from a perpendicular direction hinder the discharge process, thereby decreasing the bicycle flow at the intersection. The insights can be used to develop measures which minimise delay at intersections and to design efficient infrastructure for bicyclists.

show abstract

“…The queue clearance time of bicycles waiting in line during the red light can be calculated based on the traffic wave theory (FHWA 2017; Knoop and Daamen 2017;Wierbos et al 2018;Goñi-Ros et al 2018). The bicycle aggregation wave during the red light is the transition from a high-speed and low-density state to a stopping state after the red signal starts, as given by Eq.…”

Section: Minimum Green Timementioning

confidence: 99%

An innovative design for left turn bicycles at continuous flow intersections

Zhao

Gao

Knoop

2019

Transportmetrica B: Transport Dynamics

View full text Add to dashboard Cite

An innovative design for left turn bicycles at continuous flow intersections To improve the practical capacity of the continuous flow intersections (CFI) and eliminate the conflict between left-turn bicycles and through vehicles at the mainsignal, an optimization design method for left-turn bicycles was proposed. From the perspective of the geometric design, the pre-stop line for through vehicles and the crossing passage for left-turn bicycles were set at the pre-signal points of the CFI. From the perspective of signal control, the control of the through vehicles at pre-signal was added in the proposed method. A linear programming model was established to achieve the maximum vehicular practical capacity. The optimization effectiveness and applicability for this design were validated by a case study and sensitivity analyses. The results show that this method can effectively avoid the conflict between left-turn bicycles and through vehicles at main-signal and enhance the practical capacity at continuous flow intersections. As for vehicles, the improvements in practical capacity obtained by the proposed method increase with the increase of the left-turn bicycles volume and through vehicle percentage, while decrease with longer cycle length. On average, a 5% increase and 3.5% increase in the improvement of practical capacity can be obtained for every 100 left-turn bicycles per hour increase and for every 10% through vehicle percentage increase, respectively. As for bicycles, the proposed method can reduce the delay in the case of high traffic demand.

show abstract

Empirical Analysis of the Macroscopic Characteristics of Bicycle Flow during the Queue Discharge Process at a Signalized Intersection

Cited by 8 publications

References 12 publications

Expanding the Scope of the Bicycle Level-of-Service Concept: A Review of the Literature

Expanding the Scope of the Bicycle Level-of-Service Concept: A Review of the Literature

The Influence of Jam Density and Merging Cyclists on the Queue Discharge Rate

An innovative design for left turn bicycles at continuous flow intersections

Contact Info

Product

Resources

About