Abstract
The article presents the results of the study of the concept of «accessibility». It is shown that the term is used as a property and a figure of speech. In the form of a figure of speech, the concept contains the accessibility property, as well as properties and factors that affect the level of accessibility. Methodological approaches and results of field studies confirming the possibility of evaluating and describing the accessibility in terms of numeric expressions are presented. Field experiments were carried out in Rostov-on-Don and Novosibirsk with the participation of more than 90 respondents. Formalized mathematical definition of route accessibility for disabled is given as well as examples of defining the values of accessibility for certain categories of disabled people. Justification of feasibility of describing the accessibility of routes by means of level scale which excludes the drawbacks of binary system of accessibility evaluation is given. The incorrect usage of object-oriented approach for evaluating accessibility for disabled at different territories and transport systems is confirmed.
Highlights
In the course of the past decade, the issue of ensuring the accessibility for disabled people in terms of urban territories and transport in Russia has been given a boost
The analysis has shown that the accessibility is general property of material and non-material objects, specified by being capable to be used by disabled people
Other properties and external factors that affect the accessibility of routes should be considered
Summary
In the course of the past decade, the issue of ensuring the accessibility for disabled people in terms of urban territories and transport in Russia has been given a boost. In valid regulations [1,2,3] the definition of accessibility level is made based on absolute and relative factors which indicate the numerical characteristics of the object and services accessible for disabled. Such approach has been defined as object-oriented [4,5,6]. The existing approach is convenient in terms of using the factors which are simple to identify and suitable for the state accounting policy It has one major drawback: this approach doesnt consider the character of interaction between the disabled people and the environment nor the directions and specific features of their routes. The capability and frequency of visiting the objects by the disabled people depends on the accessibility level of the facilities and on the environment and transport accessibility
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