Modelling the Modal Shift Effects of Converting a General Traffic Lane into a Dedicated Bus Lane

Yang, Guangchuan; Wang, Daobin; Mao, Xuesong

doi:10.7307/ptt.v32i5.3375

Cited by 4 publications

(1 citation statement)

References 29 publications

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“…As long as the average person's travel time in mixed trafc is longer, a DBL implementation is recommended. Yang et al [14] analyzed the efects of converting a general trafc lane into a DBL by employing a microsimulation model, considering various demand levels and bus share ratios. Signifcant reductions in bus delays were found for all demand levels, especially for high values.…”

Section: Literature Reviewmentioning

confidence: 99%

A New Big Data Approach to Understanding General Traffic Impacts on Bus Passenger Delays

Montero-Lamas

Novales

Orro

et al. 2023

Journal of Advanced Transportation

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This paper presents a new method to quantify the potential user time savings if the urban bus is given preferential treatment, changing from mixed traffic to an exclusive bus lane, using a big data approach. The main advantage of the proposal is the use of the high amount of information that is automatically collected by sensors and management systems in many different situations with a high degree of spatial and temporal detail. These data allow ready adjustment of calculations to the specific reality measured in each case. In this way, we propose a novel methodology of general application to estimate the potential passenger savings instead of using simulation or analytical methods already present in the literature. For that purpose, in the first place, a travel time prediction model per vehicle trip has been developed. It has been calibrated and validated with a historical series of observations in real-world situations. This model is based on multiple linear regression. The estimated bus delay is obtained by comparing the estimated bus travel time with the bus travel time under free-flow conditions. Finally, estimated bus passenger time savings would be obtained if an exclusive bus lane had been implemented. An estimation of the passenger’s route in each vehicle trip is considered to avoid average value simplifications in this calculation. A case study is conducted in A Coruña, Spain, to prove the methodology's applicability. The results showed that 18.7% of the analyzed bus trips underwent a delay exceeding 3 min in a 2,448 m long corridor, and more than 33,000 h per year could have been saved with an exclusive bus lane. Understanding the impact of different factors on transit and the benefits of a priority bus system on passengers can help city councils and transit agencies to know which investments to prioritize given their limited budget.

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Section: Literature Reviewmentioning

confidence: 99%

A New Big Data Approach to Understanding General Traffic Impacts on Bus Passenger Delays

Montero-Lamas

Novales

Orro

et al. 2023

Journal of Advanced Transportation

View full text Add to dashboard Cite

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Is a dedicated bus lane operationally and environmentally beneficial? A case study in Beijing

Jiang,

Wu,

Sun

et al. 2024

Transportation Letters

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Optimization of Traffic Flow by Allowing Private Cars to Merge into the Bus Lane at Specific Locations

Yin,

Yuan,

Zheng

2024

Journal of Advanced Transportation

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A dedicated bus lane is designed to give priority to buses over private cars on the road. However, this approach might waste road traffic capacity when bus demand is low and private car demand is high. Thus, it is essential to utilize bus lanes more effectively. Previous work focuses on allowing private cars to use bus lanes which may cause bus delays. To strike a balance, some approaches involve mandating private cars to leave bus lanes and limiting the number of private cars entering bus lanes. However, these highly rely on transportation infrastructure and emerging technologies. Hence, we propose a simple method of a partially space‐shared bus lane, which allows private cars to merge into the bus lane at specific locations. Lane‐changing decision is modeled as a result of speed difference between adjacent lanes. Traffic flow is simulated by the LWR model in the Lagrangian coordinate system. Two scenarios are set up—dedicated bus lane and partially space‐shared bus lane—to evaluate the partially space‐shared system. The only optimization variable is the location that allows private cars to conduct lane‐changing. We use the genetic algorithms to optimize the system. Finally, simulation results show that the partially space‐shared bus lane reduces private‐car delays and total delays of the system. The buses would experience an increase of delays, inevitably. But the bus delay increase could be limited in a small range, which maintains the bus priority. In addition, a multiple lane‐changing position strategy is better than the single position one. This approach is suitable for traffic situations with low bus demand and high private car demand. Our work is expected to contribute to the design of future urban bus lanes and improve overall traffic operations.

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Modelling the Modal Shift Effects of Converting a General Traffic Lane into a Dedicated Bus Lane

Cited by 4 publications

References 29 publications

A New Big Data Approach to Understanding General Traffic Impacts on Bus Passenger Delays

A New Big Data Approach to Understanding General Traffic Impacts on Bus Passenger Delays

Is a dedicated bus lane operationally and environmentally beneficial? A case study in Beijing

Optimization of Traffic Flow by Allowing Private Cars to Merge into the Bus Lane at Specific Locations

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