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<p>A frequently proposed approach to mitigate transport emissions involves shifting from all-road to an intermodal solution incorporating Roll-on/Roll-off (RoRo) shipping. While existing academic research has predominantly examined this issue from the carrier’s standpoint, focusing on enhancing RoRo shipping supply to meet shippers’ demands, this study takes a different perspective by addressing the issue from the viewpoint of the shipper. The aim is to understand the production and commercial conditions under which RoRo shipping is a viable alternative to road-based solutions. We analyze the cases studies of two Japanese car manufacturers, receiving parts from supplier plants located in Honshu to their assembly plants in Kyushu. Our findings reveal that the suitability of RoRo over road transport is heavily influenced by several factors: (1) transportation volume, (2) the specific procurement strategies of car manufacturers, (3) the degree of production synchronization between suppliers and assembly plants, and (4) the predictability of vehicle sales. Contrary to the prevailing literature, our study suggests that shippers’ modal choices are primarily constrained by their own industrial and commercial considerations rather than the availability and frequency of transportation services.</p>

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The relevance of RoRo shipping from the perspective of shippers: The case study of two Japanese car manufacturers

  • 期刊论文

  • 发表日期：

    2025年7月9日

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  • Hidekazu Itoh,
  • David Guerrero

摘要

A frequently proposed approach to mitigate transport emissions involves shifting from all-road to an intermodal solution incorporating Roll-on/Roll-off (RoRo) shipping. While existing academic research has predominantly examined this issue from the carrier’s standpoint, focusing on enhancing RoRo shipping supply to meet shippers’ demands, this study takes a different perspective by addressing the issue from the viewpoint of the shipper. The aim is to understand the production and commercial conditions under which RoRo shipping is a viable alternative to road-based solutions. We analyze the cases studies of two Japanese car manufacturers, receiving parts from supplier plants located in Honshu to their assembly plants in Kyushu. Our findings reveal that the suitability of RoRo over road transport is heavily influenced by several factors: (1) transportation volume, (2) the specific procurement strategies of car manufacturers, (3) the degree of production synchronization between suppliers and assembly plants, and (4) the predictability of vehicle sales. Contrary to the prevailing literature, our study suggests that shippers’ modal choices are primarily constrained by their own industrial and commercial considerations rather than the availability and frequency of transportation services.