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Bus service performance analysis.: Case study: Bus line 1 in Stockholm, Sweden
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Traffic and Logistics.
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Transit reliability is one of the key factors in running a successful transit system from both

passengers’ and operators’ perspective. To improve the reliability of a transit service a

performance analysis is necessary. There are several service measures that can be applied to

evaluate the performance of a transit service, both in relation to service punctuality and

service regularity. Punctuality can be considered of higher importance on low frequency

lines and regularity on high frequency lines. Bunching is used to describe how vehicles

occupying the same bus route tend to bunch up and consequently the reliability decreases.

For improving reliability several holding control strategies can be applied such as schedulebased

holding, where early vehicles are held at time points, and headway

‐based holding,

where vehicles are held to retrieve even headways between consecutive vehicles.

This thesis provides an overview of several different performance measures that can

be analyzed using

Automatic Vehicle Location data (AVL) and Automatic Passenger Counters

data (APC) collected from bus vehicles. As a case study, bus line 1 in Stockholm was

analyzed. The line is a high frequency, inner city bus line, where schedule based holding is

the current holding control strategy.

The performance analysis included an analysis of service regularity, service

punctuality, dwell times, passenger boarding/alighting and load, and run times. A linear

regression analysis was applied to evaluate the effects of passenger activity on the dwell


The results showed that the overall service performance decreased along the line for

both directions. Vehicle trajectories revealed increased bunching along the line. The drivers’

compliance to holding analysis showed that there was room for improvement. Overall, the

analysis showed that the current holding control strategy does not retrieve headway

regularity and that the schedule for vehicle run times was too tight and needs revision.

Furthermore, switching to headway

‐based holding was suggested.

Place, publisher, year, edition, pages
2012. , 114 p.
TSC-MT, 12-003
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-96504OAI: diva2:530934
Available from: 2012-06-05 Created: 2012-06-05

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