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All Journal Lowland Technology International
S. Siridhara
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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Journal : Lowland Technology International

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Awareness status of sightseeing bus entrepreneurs: A case study in rural areas of Thailand S. Jomnonkwao; S. Siridhara; V. Ratanavaraha
Lowland Technology International Vol 17 No 1, June (2015)
Publisher : International Association of Lowland Technology

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The main objective of this study is to contemplate the awareness of entrepreneurs of sightseeing bus services as used by Thai travelers for private group tours and field trips through four considerations including 1) provision of convenient and safe buses; 2) provision of customer service satisfaction; 3) provision of experienced and well-behaved bus drivers; and 4) provision of bus services under travel safety. The study was carried out through interviews with 25 bus company representatives and found that factors which were raised the highest priority by entrepreneurs are provision of bus drivers having a valid driving license matching the vehicle type according to law and the provision of regular bus cleaning service. While a factor related to the provision of auto massage seats for relaxation was overlooked by all respondents. Moreover, the research team classified factors into 5 groups from A to E (highest to lowest awareness) using clustering analysis possibly making it easier to develop policy interventions appropriate with awareness of each entrepreneur group
Analysis of appropriate overtaking position under equal block lengths O. Sangphong; S. Siridhara; V. Ratanavaraha
Lowland Technology International Vol 20 No 4, March (2019): Special Issue on: Green Technology for Sustainable Infrastructure Develop
Publisher : International Association of Lowland Technology

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This paper studies train passing operation and determine line capacity by checking minimum headway. The analysis is based on the blocking time model displayed on the time space diagram where minimum headway and minimum waiting time are calculated. The study found that the capacity is affected by the number of blocks and the overtaking block position. The graph between the overtaking position and capacity is symmetrical, in which capacity is reducing when the overtaking position is far from the center of the line. The overtaking position that maximizes capacity is not affected by speed nor block length. In the case of even number of blocks, the appropriate location to overtake is (n / 2) +1 while in case of odd number of blocks, the overtake position is at (n+1)/2 and (n+3)/2. Both positions maximize the line capacity for each case. In addition, when the block length was reduced the capacity increased and decrease dwell time.
Co-Authors O. Sangphong S. Jomnonkwao V. Ratanavaraha