Journal of South Asian Logistics and Transport最新文献

Quantification of Landside Congestion in Ports: An Analysis Based on Gps Data 港口陆侧拥堵的量化：基于 Gps 数据的分析

Journal of South Asian Logistics and Transport Pub Date : 2024-03-28 DOI: 10.4038/jsalt.v4i1.75

Kumushini Thennakoon, Namal Bandaranayake, Senevi B. Kiridena, A. Kulatunga

{"title":"Quantification of Landside Congestion in Ports: An Analysis Based on Gps Data","authors":"Kumushini Thennakoon, Namal Bandaranayake, Senevi B. Kiridena, A. Kulatunga","doi":"10.4038/jsalt.v4i1.75","DOIUrl":"https://doi.org/10.4038/jsalt.v4i1.75","url":null,"abstract":"Hinterland transport is a critical segment in maritime cross-border logistics, which links the end-users of global supply chains to the maritime segment. Truck-based hinterland transport is known to cause congestion in and around ports. This study aimed to quantify the congestion caused by trucks at the Port of Colombo, which has not been a subject of a systematic study. To this end, the study makes use of GPS data. In addition to revealing heavy congestion within the port, the study also reveals significant variations in congestion during different times of the day with the duration of journeys peaking from 1200hrs to 1800hrs. Furthermore, the most congested segment of the truck journey is found to be the port exit gate. The findings provide a foundation for appraising infrastructure investments and other related improvement initiatives for easing congestion within and in the vicinity of the port. The study illustrates the potential for data to reveal insights that transcend its original purpose. From a theoretical point of view, the study proposes a novel way of conceptualising the truck turnaround time at ports which goes beyond the confines of the port and is more meaningful for users in the hinterland. The analysis presented in the study is limited to data obtained from a single haulage company.","PeriodicalId":327211,"journal":{"name":"Journal of South Asian Logistics and Transport","volume":"123 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140370208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Developing Trip Generation and Attraction Models Using High-Frequency Proxy Data 利用高频代理数据开发旅行生成和吸引模型

Journal of South Asian Logistics and Transport Pub Date : 2024-03-28 DOI: 10.4038/jsalt.v4i1.77

Thivya P. Amalan, R. C. Wickramasuriya

{"title":"Developing Trip Generation and Attraction Models Using High-Frequency Proxy Data","authors":"Thivya P. Amalan, R. C. Wickramasuriya","doi":"10.4038/jsalt.v4i1.77","DOIUrl":"https://doi.org/10.4038/jsalt.v4i1.77","url":null,"abstract":"The attraction and generation of a trip play a crucial role in transport planning and forecasting of trips. Multiple linear regression (MLR) is the most popular method of calculating trip attractions (TA) and trip generations (TG) to produce a distribution that can be used to forecast trips with updated values of independent variables such as electricity consumption, no of households, area of the land use etc. Literature shows that the surveys require independent variables to be updated; making them expensive and time consuming. This study aims to develop an MLR model for TA and TG based on available survey data from 2013 for Western Province, Sri Lanka and to update those independent variables using High Frequency (HF) proxy data for the predicted year (2019). Data from HF proxy sources such as electricity consumption, GPS customer points, and Landsat satellite imagery data have been used to update the independent variables of TG and TA for 2019. In the initial stage of this research, data from a home visit survey conducted in 2013 and land use data from the Western Province of Sri Lanka were used to develop the MLR model for TG and TA. A correlation and a regression analysis were performed using these surveyed data. According to the study, the MLR model for TG for home-based work trips has an r2 value of 0.79 and TA for general purposes (including shops and businesses) and industrial has an r2 value of 0.74 and 0.79, respectively, indicates the strong relationship between the considered variables to predict TG and TA. The model is validated with 2013 survey data and would be helpful for real-time estimation of the TG and TA of each zone.","PeriodicalId":327211,"journal":{"name":"Journal of South Asian Logistics and Transport","volume":"20 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140369006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identifying Factors that Affect Price Determination for Fuel and Vehicles in Sri Lanka: A System Dynamics Approach 确定影响斯里兰卡燃料和车辆价格决定的因素：系统动力学方法

Journal of South Asian Logistics and Transport Pub Date : 2024-03-28 DOI: 10.4038/jsalt.v4i1.89

M. Silva, M. Mavin, De Silva

引用次数: 0

Determinants, Motivators and Barriers for Utilitarian Cycling in Starter Cities: Case of Battaramulla, Sri Lanka 起步城市骑自行车的决定因素、动机和障碍：斯里兰卡巴塔拉穆拉案例

Journal of South Asian Logistics and Transport Pub Date : 2024-03-28 DOI: 10.4038/jsalt.v4i1.88

Malki Rodrigo, Chameera De Silva, P. Wattage

{"title":"Determinants, Motivators and Barriers for Utilitarian Cycling in Starter Cities: Case of Battaramulla, Sri Lanka","authors":"Malki Rodrigo, Chameera De Silva, P. Wattage","doi":"10.4038/jsalt.v4i1.88","DOIUrl":"https://doi.org/10.4038/jsalt.v4i1.88","url":null,"abstract":"In the 1960s, a counter-cultural movement promoting utilitarian bicycle usage emerged in Europe and North America, challenging the dominance of cars, and advocating for sustainable urban mobility. despite the emergence of this movement, many developing cities have low cycling modal share and encounter obstacles in promoting utilitarian cycling. This study delves into workers attitudes toward using bicycles as an alternative mode of transportation. Employing a Binary logistic regression model and incorporating the Relative Importance Index (RII), the research identifies key determinants of utilitarian cycling. The findings highlight significant community willingness (71%) to bike to work, despite perceived barriers. Safety concerns (RII - 0.88) and environmental factors (RII = 0.60), such as rain and heat, emerge as prominent deterrents. Societal perceptions linking cycling to lower social status (vanity) (RII = 0.35), bicycle affordability (RII = 0.35), and work-related factors (RII = 0.48), such as non-cycle-friendly work attire and insufficient office parking safety, play relatively minor roles in discouraging bicycle use. Using the logistic regression model, the study predicts factors influencing the willingness to use bicycles for utilitarian transportation, revealing negative impacts from the absence of cycling infrastructure, motor traffic, rainy weather, and a lack of a cycling community.","PeriodicalId":327211,"journal":{"name":"Journal of South Asian Logistics and Transport","volume":"130 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140369747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reflections on Labour Productivity of the Sri Lanka Transport Board: An Analysis of Patterns and Evolution 对斯里兰卡运输局劳动生产率的思考：模式与演变分析

Journal of South Asian Logistics and Transport Pub Date : 2024-03-28 DOI: 10.4038/jsalt.v4i1.87

T. Gunaruwan, S. Gunasinghe

{"title":"Reflections on Labour Productivity of the Sri Lanka Transport Board: An Analysis of Patterns and Evolution","authors":"T. Gunaruwan, S. Gunasinghe","doi":"10.4038/jsalt.v4i1.87","DOIUrl":"https://doi.org/10.4038/jsalt.v4i1.87","url":null,"abstract":"The predominant reliance on buses, particularly by low-income commuters, has made the bus transportation industry one of the most pivotal contributors to the domestic economy. Therefore, as the single largest public bus transportation service provider in Sri Lanka, SLTB’s ability to generate higher volumes of output by employing fewer inputs is increasingly crucial. However, SLTB is a state-owned enterprise that has been criticised for its inefficient factor productivity for a long time. Such allegations against the leading transport service provider of the country would raise serious economic concerns. Thus, this study attempted to examine SLTB’s labour productivity in its physical dimensions as reflected through the elasticity of output on labour inputs to determine the underlying causes for any inefficiency in the utilisation of labour in the organisation. The scale and evolution of elasticities of output of SLTB’s operations on labour inputs between 2011 and 2019 were subject to econometric scrutiny in this study. The results of the study revealed that the SLTB’s elasticity of output on labour inputs has been negative at the overall national level. However, a favourable evolution of the elasticity of output on labour could be observed over the years. The results also revealed the presence of significant differences in region-specific effects on the elasticity of output on labour inputs compared to the national level, indicating that different regions have different labour productivity levels.","PeriodicalId":327211,"journal":{"name":"Journal of South Asian Logistics and Transport","volume":"51 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140371530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Agent-Based Crowd Dynamics Simulation that Considers Idling and Time-and-Distance-Conscious Optimising Behaviour 基于代理的人群动力学模拟，考虑了空转和时间与距离的优化行为

Journal of South Asian Logistics and Transport Pub Date : 2024-03-28 DOI: 10.4038/jsalt.v4i1.90

A. P. Senasinghe, Willem Klumpenhouwer, Ahmed Labidi, Lina Kattan

{"title":"An Agent-Based Crowd Dynamics Simulation that Considers Idling and Time-and-Distance-Conscious Optimising Behaviour","authors":"A. P. Senasinghe, Willem Klumpenhouwer, Ahmed Labidi, Lina Kattan","doi":"10.4038/jsalt.v4i1.90","DOIUrl":"https://doi.org/10.4038/jsalt.v4i1.90","url":null,"abstract":"This agent-based simulation study investigates pedestrian dynamics with a focus on the impacts of behaviour idling on pedestrian flows. It also examines the influence of psychological, social, and environmental factors on pedestrian flows. Our research categorises pedestrian behaviour into three types: time-sensitive (Type A), mobility-constrained (Type B), and 'wandering' type (Type C), defined as pedestrians moving without a specific destination, which includes tourists, shoppers, and leisure walkers. We demonstrate how behaviour heterogeneity influences flow and movement patterns through simulations in unidirectional, bi-directional, and multi-directional pedestrian facilities. We find that Type C pedestrians significantly slow down Type A pedestrians, leading to a speed reduction of up to 30% in high-density tourist scenarios, and cause prolonged stationary periods for Type B pedestrians, particularly in less crowded settings where Type C's tendency to idle is more pronounced. Our results show a linear relationship between density and speed reduction, with tourist behaviour notably exacerbating congestion in high-density environments. Key insights highlight the critical role of wandering (Type C) behaviours in affecting pedestrian flow, emphasising the necessity for urban planning and infrastructure design to accommodate this variability. Future research aims to apply these findings to real-world contexts, further refining urban design strategies to accommodate the full spectrum of pedestrian behaviours.","PeriodicalId":327211,"journal":{"name":"Journal of South Asian Logistics and Transport","volume":"11 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140372185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A microscopic traffic simulation framework to evaluate the performance of bus priority lanes 一种评价公交优先车道性能的微观交通仿真框架

Journal of South Asian Logistics and Transport Pub Date : 2023-03-29 DOI: 10.4038/jsalt.v3i1.57

Thenuwan Jayasinghe, Anuradha Munasinghe, T. Sivakumar

引用次数: 0

Strategic perspectives of integrating land use and transport development in Sri Lanka: a review 斯里兰卡土地利用与交通发展一体化的战略视角:综述

Journal of South Asian Logistics and Transport Pub Date : 2023-03-29 DOI: 10.4038/jsalt.v3i1.63

W. Mendis

引用次数: 0

Economic cost of human fatalities due to road traffic accidents in Sri Lanka: an estimation based on the human capital approach 斯里兰卡道路交通事故造成人员死亡的经济成本:基于人力资本方法的估计

Journal of South Asian Logistics and Transport Pub Date : 2023-03-29 DOI: 10.4038/jsalt.v3i1.59

T. Gunaruwan, P. C. J. Nayanalochana

引用次数: 1

Road segmentation: exploiting the efficiency of skip connections for efficient semantic segmentation 道路分割:利用跳跃连接的效率进行高效的语义分割

Journal of South Asian Logistics and Transport Pub Date : 2023-03-29 DOI: 10.4038/jsalt.v3i1.60

D. Madhumita, H. Bharath, V. Devendra, B. Shivam

引用次数: 0