Environmental Impact and Travel Time Savings of a New Monorail System in Colombo’s Commuting Traffic
Environmental Impact and Travel Time Savings of a New Monorail System in Colombo’s Commuting Traffic
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科伦坡通勤交通中新单轨系统的环境影响和旅行时间节省
DOI：
10.1016/j.trd.2016.12.003
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
and Yuichiro Yoshida
中科院分区：
文献类型：
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作者：
Dinushi Anupama Manoratna;Keisuke Kawata;and Yuichiro Yoshida
这项研究估计的环境影响和价值的通勤者谁前往科隆博城市的交通拥堵时，建议的单轨系统到位的旅行时间节省。该模型考虑了引入单轨铁路到一个单中心的城市，对称分布的放射状高速公路收敛到中央商务区（CBD），与非弹性通勤需求。我们比较了CO2排放量以及总旅行时间节省从不同的单轨方案，作为一个必要条件，以产生一个有效的结果，引入收费。结果表明，对于平均速度为40公里/小时的单轨列车，距离CBD 26.8公里的长度将优化投资，并节省1.05亿卢比的旅行时间。每天或每年1.89亿美元的斯里兰卡经济，导致二氧化碳排放量减少42%。进行敏感性分析，以评估单轨列车速度，通勤收入和人口增长的影响。
This study estimates the environmental impact and the value of travel time savings for commuters who travel to Colombo city in traffic congestion when the proposed monorail system is in place. The model considers an introduction of a monorail into a mono-centric city with symmetrically distributed radial highways converging toward the central business district (CBD), with an inelastic commuter demand. We compare the CO2emission amount as well as aggregate travel time savings from different monorail scenarios, with the introduction of a toll as a necessary condition to generate an efficient outcome. The results show that for a monorail running at an average speed of 40 km/h a length of 26.8 km from the CBD will optimize investment and contribute travel time savings of 105 million Rs. per day or 189 million USD per year to the Sri Lankan economy, resulting in the CO2emission reduction by 42%. A sensitivity analysis is conducted to evaluate the effects of monorail speed, commuter income, and population growth.