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

Author

Montero-Lamas, Yaiza, Novales, Margarita, Orro, Alfonso, and Currie, Graham

Subjects
Big data -- Usage -- Methods, Bus travel -- Methods -- Usage, Simulation methods -- Methods -- Usage, Transportation industry
Abstract

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 3min in a 2,448m long corridor, and more than 33,000h 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., Author(s): Yaiza Montero-Lamas (corresponding author) [1]; Margarita Novales [1]; Alfonso Orro [1]; Graham Currie [2] 1. Introduction Improving bus systems to attract new users is essential to achieving more sustainable [...]

Published
2023
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14. Variation in Bus Transit Attribute Perceptions between Australian Cities

Author

Weliwitiya, Hesara, Rahman, Mustafizur, Horvat, Steven, Tivendale, Knowles, and Currie, Graham

Abstract

This paper explores user/nonuser perceptions of bus transit attributes in Melbourne, Sydney, and South East Queensland (SEQ). It aims to understand the relative importance and performance of various bus transit attributes and how the assessment varies according to city, socioeconomic cohort, and user/nonuser groups. Primary data were collected via a screening survey, enabling a very large sample (n= 13,537) and a smaller, more representative subset collating more detailed survey data (n= 2,420). Personal safety stood out as a key bus transit attribute of importance in all cities. Specifically, safety when traveling on the bus during the daytime and at night, and safety getting to and from the bus stop were ranked as very important bus transit attributes. Some findings differed by region: service levels, punctuality, frequency, and timetable adherence (reliability) were rated relatively high in importance but low in performance in Sydney and Melbourne compared with SEQ. This suggests that Melbourne and Sydney might require service-level improvements more immediately than SEQ. Implications for policy for each Australian metropolitan region (Sydney, Melbourne, and SEQ) are later discussed.

Published
2024
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