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Fundamental diagram of ship traffic in the Singapore Strait

机译：新加坡海峡船舶交通基本图

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摘要

The Singapore Strait plays a vital role for the international freight transportation, including containers, bulk cargo and crude oil. In view of the importance of Singapore Strait, it is of practical significance to investigate the ship traffic's speed-density relationship called the fundamental diagram in the Strait, which can be used to estimate the theoretical strait capacity. Despite the availability of large empirical ship traffic data and the long history of traffic flow modeling, the analysis of ship traffic fundamental diagram for the Singapore Strait is still highly deficient. To fill in the gap, we first develop a research framework to address the big MS (automatic identification system) data for the ship traffic fundamental diagram building. To ensure the correctness of MS data, a tangible error elimination method is presented. Moreover, a novel weighted least square approach is applied to develop the ship traffic speed-density formulations accurately. Meanwhile, we also show the applicability of the weighted least square approach by a theoretical investigation into the difference between the weighted and non-weighted least square approaches. Finally, we study all the fifteen legs in the Singapore Strait and propose 75 fundamental diagrams based on four classic traffic flow models through mining more than 43 million pieces of MS data. These fundamental diagrams also indicate the theoretical capacity of each leg in the Singapore Strait.
机译：新加坡海峡对于包括集装箱，散装货物和原油在内的国际货运起着至关重要的作用。鉴于新加坡海峡的重要性，研究船舶交通的速度-密度关系（称为海峡基本图）具有实际意义，该关系图可用于估算海峡理论容量。尽管有大量的经验性船舶交通数据，而且交通流建模的历史悠久，但新加坡海峡船舶交通基本图的分析仍然非常缺乏。为了填补这一空白，我们首先开发一个研究框架来解决船舶交通基本图构建的大型MS（自动识别系统）数据。为了保证质谱数据的正确性，提出了一种切实可行的消除误差的方法。此外，一种新颖的加权最小二乘方法被用来精确地开发船舶交通速度密度公式。同时，我们还通过对加权和非加权最小二乘方法之间的差异进行理论研究，证明了加权最小二乘方法的适用性。最后，我们研究了新加坡海峡的所有15条航段，并通过挖掘4300万条MS数据，基于四种经典交通流模型，提出了75张基本图表。这些基本图表还表明了新加坡海峡每条航道的理论承载力。

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