Browsing by Author "Pathirana, DK"

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item: Conference-Full-text
Methodology of developing a tour mode choice model of workers in western province, Sri Lanka
(IEEE, 2022-07) Pathirana, DK; Sirisoma, N; De Silva, D; Rathnayake, M; Adhikariwatte, V; Hemachandra, K
This study is based on work tours which can identify by considering all the trips as a chain starting and ending at home. Tour mode estimation is one step in the Activity-Based Model needed to be followed once tour patterns are identified. The socio-economics/demographic characteristics of individuals and households, level of service attributes, tour/trip details, and land-use attributes influence tour mode. A choice model needs to estimate the tour mode using these influential factors. Assigning a tour mode for each tour is required before model formulation. The main objective of this paper is to propose a method to estimate tour modes for individuals in Western Province, Sri Lanka. The required travel details were collected from the CoMTrans 2013/14 Household Visit Survey data. This paper includes only the work tours and describes the methodology to estimate the tour mode choice model. The authors introduce a process to identify the tour modes out of trip modes. The descriptive analysis of tour mode with the tour pattern details is included. The estimated results in tour mode for the Colombo district were presented. The mathematical techniques, details of data needed, and required software for estimating the tour mode choice model are mentioned in this paper.
item: Conference-Abstract
A solution for an unsafe ferry crossing at the Kalu Ganga: a case study at Galpatha
(Sri Lanka Society of Transport and Logistics, 2020-11) Fernando, PA; Baddewala, PK; Thabrew, DR; Wijekoon, C; Fernando, NS; Gunarathne, NH; Janujan, A; Dayarathna, H; Pathirana, DK; Gunaruwan, TL
People travelling between Galpatha, Bolossagama and its surrounding area face a challenge in crossing the Kalu Ganga using a privately operated ferry. Every year, it has been recorded that a significant number of accidents take place because of this unsafe ferry. It is particularly dangerous to use in the rainy season. This paper proposes a solution to issues faced by people who use this ferry. The issues were captured using a survey done among the users of the ferry and by interviews done with the authorized persons in the area including the Grama Niladaris. Around 50 users were interviewed while 44% of them were travelling for working purposes. The busiest times of the ferry were from 6 am - 9 am and in the evening it was 3 pm - 6 pm. In the dry season, the ferry operate smoothly. In the rainy season ferry ports are flooded and the waves are much stronger. Therefore, during such times the ferry service is unavailable. In an emergency or when the ferry is unavailable, these people have to travel an additional 22.4 km to reach the destination. There are no other ferries operating nearby. Using descriptive analysis, waiting time for the ferry, safety, and difficulties in goods transport were identified as main issues. The best solution was found to be building a bridge over the river at this point. This is one of the narrowest points along the river and is suitable for the construction of a bridge. Results derived from the gravity model showed that if a bridge is built, the volume of travel between the two villages would increase by 411.28%. There is high demand for a bridge than the ferry. If a bridge is built, for a person travelling by motorcycle, the generalized cost will reduce by 98.98% and for a person getting across by foot, the generalized cost will reduce by 92.25%. Financial Feasibility of constructing a bridge has been discussed and estimated using the Oddamavadi Bridge as the sample case. This would save the time and resources of many. It will also provide the best range of choices to users because their mobility and safety will increase.