Change search
ReferencesLink to record
Permanent link

Direct link
Boarding and bunching.: The impact of boarding procedure on bus regularity and performance.
KTH, School of Architecture and the Built Environment (ABE), Transport Science.
2011 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]


The aim of this thesis is to study how different boarding procedures on buses affect bus bunching, passenger travel time and waiting time, taking the effects on the whole transit network in mind. To achieve this it is important to be able to quantify the bunching problems in situations with different boarding procedures and demand.

Video recording of bus boarding and alighting in Stockholm and Gothenburg was used to calibrate and validate dwell time models. Identification of suitable dwell time functions was based on the data and former experience. The network performance analysis is based on simulation of two bus lines with different supply and demand running partially parallel.

The simulation shows that in a system with many passengers and overlapping bus lines, free boarding through all doors can decrease average passenger travel time and vehicle circulation time by 20 - 25 per cent during rush hour. At the same time better regularity means less crowded buses, and for each bus and stop 0.5 passengers less were left behind due to overcrowding.

Allowing the passengers to board through all doors can in combination with a good holding strategy give large benefits in a transit network in the size of Stockholm. Even though bus bunching is a well-known phenomenon, it is seldom considered when evaluating new transit policies and this can lead to underestimation of the effects.

Place, publisher, year, edition, pages
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-34618OAI: diva2:422140
Available from: 2011-10-10 Created: 2011-06-10 Last updated: 2011-10-10Bibliographically approved

Open Access in DiVA

fulltext(1724 kB)584 downloads
File information
File name FULLTEXT01.pdfFile size 1724 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
Transport Science
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 584 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 352 hits
ReferencesLink to record
Permanent link

Direct link