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------题目------
The following appeared in an editorial in a Prunty County newspaper.
'In an attempt to improve highway safety, Prunty County recently lowered its speed limit from 55 miles per hour to 45 on all major county roads. But the 55 mph limit should be restored, because this safety effort has failed. Most drivers are exceeding the new speed limit and the accident rate throughout Prunty County has decreased only slightly. If we want to improve the safety of our roads, we should instead undertake the same kind of road improvement project that Butler County completed five years ago: increasing lane widths and resurfacing rough roads. Today, major Butler County roads still have a 55 mph speed limit, yet there were 25 percent fewer reported accidents in Butler County this past year than there were five years ago.'
------正文------
Before accepting the assertion for restoring the speed limit of 55 mile per hour and undertaking the same kind of road improvement project as Butler County completed five years ago, the evidnece presented by the author should be scrutinized from several perspectives, by doing which, I find the author has overlooked other alternatives influencing the road safety, as discussed below.
To begin with, the assumption that the speed limit of 45 mile per hour has failed because most drivers are exceeding the new speed limit and the accident rate throughout Prunty County has decreased only slightly. However, it is not well reasoned. The author fails to make a comparison with data of the prior average driving speed before lowing the speed limit, it is entirely possible that even under the speed limit of 55 mile per hour before, the drivers always drive at a high speed far beyond 55 mile per hour. Moreover, the fact that the accident rate has decreased slightly, though not evidently, has already show the efficiency of such adjustment of the speed limit to some extent.
Even if it is true that the speed limit of 45 miles per hour has contributed little to the road safety in Prunt County, the author could not come to an arugment for undertaking the same kind of road improvement project that Butler County completed five yeas ago. First, the author hasn’t provided substantial evidence to support that 25 percent few reported accidents last year are due to the project of increasing lane widther and resurfacing rough roads five years ago. It is higly possible that other preventative measures taken last year have reduced the accidental rate of Butler County, or that the report of last year is itself unsbustantial. Again, the author fails to consider the difference of road condition, weather and backgrounds of drivers between the tow counties. It is possilbe the major roads in Prunt County have already been wide enough to ensure the smooth traffic, It is also possible that drivers in Prunt County are younger, who would like to risk a high speed due to their impetuous character, or that more drivers in Prunt County have to undertake the night driving. In addition, perhaps the weather condition in Prunt County are more terrible than that of Butler County, the drivers may often suffer from the thick fogs and heavy rains, which would bring considerate dangers to the drivers, while the drivers of Butler County are lucky to avoiding the threatening from bad wether.
In sum, the argument for restoring the speed limit of 55 miles a hour and improvemtn of the road by increasing lane wideth and resurfacing the rough roads is not sufficiently supported. Befor any final decision are made for the road safety, the arguer should take all-round consideration about all possible alternatives and caused for the accident rate . |
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