| 1. |
- Pendrill, Leslie, et al.
(författare)
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Psychometric measurement and decision-making of accessibilityin public transport for older persons with functional limitations
- 2014
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Vulnerable travellers face challenges in the transport environment potentially leading to decreased mobility. A research goal is to find out how to improve railway accessibility by reducing barriers for persons with functional limitations. A method for measuring accessibility has earlier been developed where travel barriers are assigned different weights based on persons’ functional ability and travel behaviour. The more weight placed on a certain barrier, the less accessible and thus less probable a particular journey will be. In the present work, these travel-barrier weights are analysed psychometrically based on the replies to questions about ease or difficulty of accessing travel with various barriers in responses given by 162 older long-distance travellers. An invariant measure theory approach (Rasch) is employed that allows (i) transformation of ordinal questionnaire data onto a quantitative interval scale; and (ii) separate measures of barrier level of challenge and person capability. A principal component analysis revealed three main clusters: 1) mainly ergonomically related questions; 2) mainly informational/cognitive; while cluster 3) is a mix of these two. Correlations are investigated between perceived accessibility and functional ability, and between person capability and functional ability. Independent sources of measurement uncertainty (e.g. under-estimation of scores) are distinguished from separate estimates of task challenge and individual travel capability. These independent sources are accounted for in estimates of reliability and validity of the various measures.
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| 2. |
- Sundling, Catherine, et al.
(författare)
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New perspective on the accessibility of railway transport for the vulnerable traveller
- 2013
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Ingår i: Journal of Physics, Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 459:1
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Tidskriftsartikel (refereegranskat)abstract
- Vulnerable travellers experience various problems in the transport environment. These may reduce public travel confidence and consequently lead to decreased mobility. A goal of our research is to find out how to improve the accessibility to railway travelling, especially, for persons with functional limitations. By reducing barriers, the ability of travelling would be improved, and consequently allow for more flexible travel behaviors. In order to develop a model and a method of measurement for accessibility, we (a) constructed a reference group of representative ‘typical older persons’ (65-85 years) from questionnaire data, and (b) developed an accessibility measure for persons with functional limitations. In this measure barriers have different weights for the different persons depending on their functional ability and travel behavior. This gives the probability of facing a certain barrier when travelling to a certain destination; that is, a measure of accessibility for the individual. The more weight placed on a certain barrier, the less probable it is that the particular journey will take place. These weights will be obtained in forthcoming research on the perception of a set of various travel scenarios representing barriers.
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| 3. |
- Sundling, Catherine, et al.
(författare)
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Overall Accessibility to Traveling by Rail for the Elderly with and without Functional Limitations : The Whole-Trip Perspective
- 2014
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Ingår i: International Journal of Environmental Research and Public Health. - : MDPI AG. - 1661-7827 .- 1660-4601. ; 11:12, s. 12938-12968
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Tidskriftsartikel (refereegranskat)abstract
- Elderly persons’ perceived accessibility to railway traveling depends on their functional limitations/diseases, their functional abilities and their travel behaviors in interaction with the barriers encountered during whole trips. A survey was conducted on a random sample of 1000 city residents (65–85 years old; 57% response rate). The travels were perceived least accessible by respondents with severely reduced functional ability and by those with more than one functional limitation/disease (e.g., restricted mobility and chronic pain). Those who traveled “often”, perceived the accessibility to be better than those who traveled less frequently. For travelers with high functional ability, the main barriers to more frequent traveling were travel costs and low punctuality. For those with low functional ability, one’s own health was reported to be the main barrier. Our results clarify the links among existing functional limitations/functional abilities, the barriers encountered, the travel behavior, and the overall accessibility to traveling. By operationalizing the whole-trip concept as a chain of events, we deliver practical knowledge on vulnerable groups for decision-making to improve the transport environment for all.
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| 4. |
- Sundling, Catherine, 1962-, et al.
(författare)
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Travel behaviour change in old age : the role of critical incidents in public transport
- 2016
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Ingår i: European Journal of Ageing. - : Springer Science and Business Media LLC. - 1613-9372 .- 1613-9380. ; 13:1, s. 75-83
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Tidskriftsartikel (refereegranskat)abstract
- Older people’s travel behaviour is affected by negative or positive critical incidents in the public transport environment. With the objective of identifying such incidents during whole trips and examining how travel behaviour had changed, we have conducted in-depth interviews with 30 participants aged 65–91 years in the County of Stockholm, Sweden. Out of 469 incidents identified, 77 were reported to have resulted in travel behaviour change, 67 of them in a negative way. Most critical incidents were encountered in the physical environment on-board vehicles and at stations/stops as well as in pricing/ticketing. The findings show that more personal assistance, better driving behaviour, and swift maintenance of elevators and escalators are key facilitators that would improve predictability in travelling and enhance vulnerable older travellers’ feeling of security. The results demonstrate the benefit of involving different groups of end users in future planning and design, such that transport systems would meet the various needs of its end users.
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