| 来源类型 | Working Paper
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| 规范类型 | 报告
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| DOI | 10.3386/w17758
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| 来源ID | Working Paper 17758
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| Time as a Trade Barrier |
| David Hummels; Georg Schaur
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| 发表日期 | 2012-01-20
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| 出版年 | 2012
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| 语种 | 英语
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| 摘要 | A large and growing share of international trade is carried on airplanes. Air cargo is many times more expensive than maritime transport but arrives in destination markets much faster. We model firms' choice between exporting goods using fast but expensive air cargo and slow but cheap ocean cargo. This choice depends on the price elasticity of demand and the value that consumers attach to fast delivery and is revealed in the relative market shares of firms who air and ocean ship. We use US imports data that provide rich variation in the premium paid for air shipping and in time lags for ocean transit to identify these parameters and extract consumer's valuation of time. By exploiting variation across US entry coasts we are able to control for selection and for unobserved shocks to product quality and variety that affect market shares. We estimate that each day in transit is equivalent to an ad-valorem tariff of 0.6 to 2.3 percent and that the most time-sensitive trade flows are those involving parts and components trade. These results suggest a link between sharp declines in the price of air shipping and rapid growth in trade as well as growth in world-wide fragmentation of production. Our estimates are also useful for assessing the economic impact of policies that raise or lower time to trade such as security screening of cargo, port infrastructure investment, or streamlined customs procedures. |
| 主题 | International Economics
; Trade
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| URL | https://www.nber.org/papers/w17758
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| 来源智库 | National Bureau of Economic Research (United States)
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| 引用统计 |
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| 资源类型 | 智库出版物
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| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/575432
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推荐引用方式
GB/T 7714 |
David Hummels,Georg Schaur. Time as a Trade Barrier. 2012.
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文件名：
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w17758.pdf
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格式：
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Adobe PDF
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