The Importance Of Transportation In Public Transportation

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Abstract
Nowadays, urban population is witnessing a rapid growth and henceforth its mobility. City infrastructures and economic resources may not follow at the same rate as the increasing mobility. So often, projected increase in transport needs goes beyond projected expansion of transit network capacity. This asymmetry between transportation supply and demand is unmistakable: congestion, unpleasant travelling conditions and other phenomena that comes with are already witnessed in the public transit system.
Public transport performance is constrained not only by its availability but also by its capacity. Actually, the capacity of a transit line is defined by the operating frequency as well as the physical capacity of each vehicle. The relationship …show more content…

Comfort in public transport, literature review and challenges
This section summarizes the findings of qualitative researches conducted on comfort in transit and the disutility linked to congestion. A benchmark of the state of the art in this subject, so far few studied, has been proved very useful to understand the overall context in which the concept of comfort and the impact of congestion on public transport users are positioned.
3.1. Quality of service
Throughout this study, the term "quality of service" returned systematically. In fact, the quality of service (QoS) in public transport is a concept which definition is very subjective and varies widely, depending on the mode of transport and the involved players.
The definition of the QoS according to the user is different to that to the operator because priorities and interests of each one of these actors are ranked differently.
3.1.1. Defining the Quality of Service
In the field of transportation, stakeholders are many and various, and sometimes with divergent interests (CERTU, 2002). This diversity is related to the fact that transit is perceived as a public service and involves besides users, institutional, public and private representatives. Despite their divergences, all these actors have a common interest: a satisfactory performance of the transport service. Idem for the QoS, to which are assigned different definitions, according to each actor (TCQSM, 2013) all suggesting that transport performance should be sought. …show more content…

The TCRP B-11 program (Transit Cooperative Research Program) is developed to assist public transit agencies in order to identify the most important parameters that could affect their system and create potential problems. Three surveys are conducted for urban rail systems, commuter bus and small bus in the city. Interviewed attributes can be grouped into nine categories: comfort, nuisance, schedules, rates, cleanliness, personalized information, passive information, security, and correspondence. The attributes related to scheduling have been the major concern of the users of public transport, followed by the comfort and nuisances (TCRP,

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