英文摘要 |
Following the increase of public constructions, the need of sand and gravel showed an increase, and the need for carriers also grew in number. A large number of sand and gravel carriers cause traffic problem, air pollution, the road surface and bridge damage. Furthermore, there have been dramatic changes in Taiwan's industrial structure. This also affects sand and gravel carrier businesses a lot. This research surveys and analyzes the status and problems in the sand and gravel carriers to gain better insight about the industry, generate strategies for the existing carriers and provide some suggestions for public policy makers. |