engleski

Public transport priority system: Impact on quality of service

This paper is based on ongoing research, within CiViTAS ELAN project (co-funded by the EU), about the implementation of public transport (PT) priority system in Zagreb. Prioritizing the PT vehicles at signalized intersections has proven to be an effective way to increase the Quality of Service (QoS) for the PT users in terms of reducing travel times between PT stops. In this paper the evaluation methodology applied for the purpose of detecting the impact of PT priority system on the PT QoS is elaborated. We define a set of evaluation indicators which are used for the decomposition of PT vehicle operation time into different segments. The operation time decomposition enables the identification of different background data impacts on the PT system performances. In addition, different data collection methods are described and evaluated: manual time recording, GPS (Global Positioning System) vehicle tracking, PDA computer system and manual video data processing. Each method is set against several criteria and comparative analysis is carried out.

PT priority system; quality of service; evaluation; data collection methods

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