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You, well not you, race through an intersection¹ as the light turns red and then you notice the camera, they got you and a ticket’s on its way. Well researchers of quantified² financial benefit of the cameras in one city turns out it’s for more than the speeding tickets.

In Barcelona more than twelve thousand people were been injured every year in traffic accidents. Making drivers slow down is proved to be the best way to reduce accidents and these cameras succeed in getting drivers to lower their speed. The researchers’ examine data from eight cameras installed³ on Barcelona’s beltways over two years. They compared the before and after accident rates for those highways and compared those with highways that have no cameras. Because of the cameras, there were 364 fewer accidents in the two years and 507 fewer injuries.

Even with the cost of the cameras and monitoring them, the city saved the equivalent⁴ of at least some nine million dollars possibly much more. The biggest benefits were from vehicle damage that didn’t happen and medical bills that were never occurred, not to mention gas money saved from not gunning the engine.

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收听单词发音

1 intersection
n.交集，十字路口，交叉点；[计算机] 交集
参考例句：
There is a stop sign at an intersection.在交叉路口处有停车标志。 Bridges are used to avoid the intersection of a railway and a highway.桥用来避免铁路和公路直接交叉。

2 quantified
确定…的数量( quantify的过去式和过去分词 )
参考例句：
An "irreducible" element is one that can not be quantified. “不可折算的”因素是一种不能数量化的因素。 This was first quantified by Block in his temperature flash theory. 这已首先由Blok在其温度瞬现理论中给予定量。

3 installed
安装( install的过去式和过去分词 )；安顿；安置；使…正式就职
参考例句：
He's getting a phone installed tomorrow. 他明天要装电话。 A professionally installed alarm will cost from about ￡500. 请专业人员安装的警报器要花费至少500 英镑。

4 equivalent
adj.（to）相等的，等价的；n.相等物，等值物
参考例句：
Nodding your head is equivalent to saying "yes".点头就等于说“赞同”。 You will receive the full equivalent of your money.你将收到与你的款项价值完全同等的物品。