In this paper, the sensitivity of how pedestrian composition, in terms of Persons with Reduced Mobility (PRM?s) i.e. slower walkers including the disabled, visually impaired, elderly etc. influence the quantitative assessment of pedestrian spatial requirements within mass transit areas (such as at stations) is proposed. The study uses microscopic simulation methods for the assessment. The paper also assesses the impact that wheelchair users or Non-Ambulant Persons (NAP?s) and Persons with Bicycles (PWB?s) have on the design service criteria; in other words, the assessment of the reduction in Level-of-Service (LOS), due to a proportion of NAP?s and/or PWB?s within the pedestrian mix. The quantification thereof and the implication on universal design is discussed in terms of the need for additional infrastructure (spatial) requirements. Currently, little research has been undertaken regarding multi-modal LOS (MMLOS), or the impact of multiple pedestrian modal types on LOS; specifically, the impact of pedestrians pushing bicycles or people in a wheelchair on the standard LOS classification system. Since there is no accepted standard design methodology available for determining multi-modal level-of-service (MMLOS), the paper suggests that the resulting reduced MMLOS can be calculated on the basis of the reduced space-density (M) experienced by each individual person based on the additional space requirements in accordance with ?equivalent? pax factors specifically defined in this paper. It is the intention that the paper will provide a greater awareness of the design considerations within industry when considering Special Needs Persons (SNP?s), NAP?s and/or PWB?s and offers quantitative guidance towards calculating appropriate spatial requirements within mass transit environments as evaluated in terms of required Level-of-Service (LOS) criteria. A discussion on shortcomings and limitations of the study is included and further work required is suggested.
Paper presented at the 34th Annual Southern African Transport Conference 6-9 July 2015 "Working Together to Deliver - Sakha Sonke", CSIR International Convention Centre, Pretoria, South Africa.