概括
公共交通在美国严重依赖政府补贴,导致效率和生产率下降. 这些财政支持并没有抵消汽车使用增加和郊区扩张带来的挑战.
科学领域:
- 运输经济学 运输经济学
- 城市规划是城市规划.
背景情况:
- 自20世纪60年代以来,美国的公共交通越来越依赖公共补贴.
- 联邦公共交通援助计划启动了这一趋势.
研究的目的:
- 分析公共补贴对美国公共交通效率和市场地位的影响.
- 评估交通补贴在应对汽车使用和去中心化带来的挑战方面的有效性.
主要方法:
- 对公共交通融资和运营指标的历史趋势的分析.
- 检查导致城市交通系统效率和劳动生产率下降的因素.
- 评估交通运输的市场表现相对于汽车所有权增加和郊区化.
主要成果:
- 补贴与城市交通中的效率和劳动生产率降低有关.
- 交通系统已经过度资本化,简化了票价结构,并扩展到人口密度低的郊区.
- 尽管有补贴,但交通运输未能抵消汽车使用增加和住宅/就业分散的市场影响.
结论:
- 公共补贴没有成功地改善美国公共交通的市场地位或效率.
- 面对社会和技术变化,目前的运输融资和服务扩张模式可能是不可持续的.
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