Now the American Automobile Association Foundation for Traffic Safety in Washington D.C. is planning to repeat Japan’s success. Starting next year, the foundation will paint chevrons and other patterns of stripes on selected roads around the country to test how well the patterns reduce highway crashes.
Too great speed plays a major role in as much as one fifth of all serious traffic accidents, according to the foundation. To help reduce those accidents, the foundation will conduct its tests in areas where speed-related risks are the greatest curves, exit slopes, traffic circles, and bridges. Some studies suggest that straight, horizontal bars(水平杆)painted across roads can initially cut the average speed of drivers in half. However, traffic often returns to full speed within months as drivers become used to seeing the painted bars.
Chevrons, scientists say, not only give drivers the impression that they are driving faster than they really are but also make a lane appear to be narrower. The result is a longer lasting reduction in highway speed and the number of traffic accidents.
36. The passage mainly discusses ________.
A. a new type of optical illusion
B. a new pattern for painting highways
C. a new way of training drivers
D. a new way of highway speed control
【答案】D
【解析】主旨大意题。通读全文,我们可以知道,在高速公路上画各种线是为了让司机觉得车速过快,从而达到控制车速的目的。
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