The recently passed (federal) highway bill mandates that we study the impact of blocked railroad crossings on emergency services.

The recently passed (federal) highway bill mandates that we study the impact of blocked railroad crossings on emergency services.

最近通过的(联邦)高速公路法案要求我们研究铁路封锁对紧急服务的影响。

-- Robert Martin 罗伯特·马汀