Optimal bus lane reservation with uncertain impact

Dedicated bus lanes and other transit priority treatments are a cost-effective way to improve transit speed and reliability. However, creating a bus lane can be a contentious process; it requires justification to the public and frequently entails competition for federal grants. In addition, more complex bus networks are likely to have unknown locations where transit priority infrastructure would provide high value to riders. This analysis presents a methodology for estimating the value of bus preferential treatments for all segments of a given bus network. It calculates the passenger-weighted travel time savings potential for each inter-stop segment based on schedule padding. The input data, ridership data, and General Transit Feed Specification (GTFS) trip-stop data are universally accessible to transit agencies. This study examines the 2018 Metropolitan Atlanta Rapid Transit Authority (MARTA) bus network and identifies a portion of route 39 on Buford Highway as an example candidate for a bus lane corridor. The results are used to evaluate the value of time savings to passengers, operating cost savings to the agency, and other benefits that would result from implementing bus lanes on Buford Highway. This study does not extend to estimating the cost of transit priority infrastructure or recommending locations based on traffic flow characteristics. However, it does provide a reproducible methodology to estimate the value of transit priority treatments, and it identifies locations with high value, all using data that are readily available to transit agencies. Conducting this analysis provides a foundation for beginning the planning process for transit priority infrastructure.

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Parameter Sensitivity Analysis of a Cooperative Dynamic Bus Lane System With Connected Vehicles

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/03611981211035758 ◽

2021 ◽

pp. 036119812110357

Author(s):

Meng Xie ◽

Michael Winsor ◽

Tao Ma ◽

Andreas Rau ◽

Fritz Busch ◽

...

Keyword(s):

Travel Time ◽

Transition Period ◽

Penetration Rate ◽

Simulation Models ◽

Driving Behavior ◽

Connected Vehicles ◽

Microscopic Simulation ◽

Communication Range ◽

Bus Lane ◽

The Impact

This paper aims to evaluate the sensitivity of the proposed cooperative dynamic bus lane system with microscopic traffic simulation models. The system creates a flexible bus priority lane that is only activated on demand at an appropriate time with advanced information and communication technologies, which can maximize the use of road space. A decentralized multi-lane cooperative algorithm is developed and implemented in a microscopic simulation environment to coordinate lane changing, gap acceptance, and car-following driving behavior for the connected vehicles (CVs) on the bus lane and the adjacent lanes. The key parameters for the sensitivity study include the penetration rate and communication range of CVs, considering the transition period and gradual uptake of CVs. Multiple scenarios are developed and compared to analyze the impact of key parameters on the system’s performance, such as total saved travel time of all passengers and travel time variation among buses and private vehicles. The microscopic simulation models showed that the cooperative dynamic bus lane system is significantly sensitive to the variations of the penetration rate and the communication range in a congested traffic state. With a CV system and a communication range of 150 m, buses obtain maximum benefits with minimal impacts on private vehicles in the study simulation. The safety concerns induced by cooperative driving behavior are also discussed in this paper.

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Analisis pengaruh V/C ratio lalu lintas kendaraan terhadap tingkat polusi udara berdasarkan volume lalu lintas kendaraan (studi di kawasan persimpangan Mall SKA Kota Pekanbaru)

Jurnal Zona ◽

10.52364/jz.v2i2.26 ◽

2021 ◽

Vol 1 (2) ◽

pp. 64-74

Author(s):

Muhammad Yevizal ◽

Aras Mulyadi ◽

Ferry Fatnanta

Keyword(s):

Quality Standards ◽

Quality Standard ◽

Observation Point ◽

Pollutant Emissions ◽

Noise Levels ◽

The Road ◽

Road Users ◽

Bus Lane ◽

On The Road ◽

The City

Completion of the transportation problems in the city of Pekanbaru currently only looked at in terms of congestion, but not touching insights from environmental aspects such as performance air pollution and noise levels. This research was conducted at the observation point road ahead Repair Tambusai lord Eastern Daihatshu, road Tuanku Tambusai West Side Mall SKA, North Soekarno Hatta street front retail outlets, street front Soekarno Hatta South Hotel Ibis Pekanbaru. V / C Ratio highest in the afternoon rush hour on the road ahead Tambusai lord Stations Daihatsu ie 0.86 pelyanan road performance E. Quality Standard ambient NOx emissions do not exceed the threshold of ambient quality standards, the NOx emission = 281.76 mg/m3. Quality Standard ambient CO emissions do not exceed the threshold of ambient quality standards, namely emission = 7456.79 mg/m3, the noise level over the limit of noise that is 71.41 dB (A). To balance the load reduction in pollutant emissions and noise levels at the flyover plan with the plan of special bus lane traffic volume assumptions have to move 25% of the transfer of the road users of private vehicles and motorbikes switch to using mass public transport vehicles ie Trans Metro bus Pekanbaru.

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Exploring Multiplier Effects Generated by Bus Lane Combinations

Transportation Research Record Journal of the Transportation Research Board ◽

10.3141/2533-08 ◽

2015 ◽

Vol 2533 (1) ◽

pp. 68-77 ◽

Cited By ~ 11

Author(s):

Long Tien Truong ◽

Majid Sarvi ◽

Graham Currie

Keyword(s):

Travel Time ◽

Traffic Volume ◽

Policy Implications ◽

Future Research ◽

Negative Effects ◽

Bus Priority ◽

Traffic Lane ◽

Multiplier Effect ◽

Bus Lane ◽

Multiplier Effects

Numerous studies have explored design and evaluation of bus lane priority by using empirical, analytical, and simulation approaches. However, none attempted to understand how different bus lane combinations, such as continuous and discontinuous bus lane sections, and a different number of bus lane sections, affect bus performance and general traffic. This paper investigates operational effects of bus lane combinations to establish whether multiple bus lane sections create a multiplier effect in which a series of continuous bus lane sections creates more benefits than several single-lane sections. If a multiplier effect exists, it suggests scale economies in wider implementation of bus priority on a networkwide scale. Overall, results confirm that there is a multiplier effect; thus bus travel time benefits and general traffic travel time disbenefits are proportional to the number of links with a bus lane. The effect suggests a constant return to scale on continuous multiple sections. The results also suggest that converting a traffic lane to a bus lane when the upstream traffic volume exceeds the capacity of the remaining traffic lanes causes significant negative effects for buses and general traffic. In addition, negative general traffic effects of continuous bus lane combinations are lower than those for a similar number of discontinuous bus lanes. Bus delays at intersections approaching the bus lane tend to improve when upstream traffic volume does not exceed the capacity of remaining downstream traffic lanes. Policy implications and areas for future research are suggested.

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