跨速头盔

前不久在自行车论坛上看到过一篇有趣的文章，讲自行车头盔的负面效应。

一个关于自行车头盔比较有趣的想法，故作翻译出来大家看看消遣一下。

老外做事情，就喜欢用数据说话。

另外，因为国内国外戴自行车头盔的普遍程度明显不同，所以文章的内容不一定适合中国目前的国情。

自行车头盔的负面效应

戴头盔会更安全一点么？

如果说到避免和减少摔车时的头部损伤，没啥好讨论的。

但一个英国的研究发现：当汽车司机超越戴头盔的骑车人的时候，会更加靠近。

研究者是Bath大学的Lan Walker，他骑的车上，装了一些距离感应器和摄像机。

他在试验中，大概被2500辆汽车超越，他的发现是：

--当汽车司机超越不戴头盔的骑车人的时候，平均会多留出8CM的距离，估计是他们会觉得骑车人的经验少，行为更加不可预料。

--小汽车和骑车人的平均距离是1.3米。卡车更加接近骑车人19CM。大巴要更近23CM。

Walker同学还戴着女人的假发来试验，看看女车手的情况如何。

结果表明，女士的情况下，司机会平均多留出14CM距离出来。

在做这些研究的时候，Walker同学被汽车撞过两次。

被撞的情况将在另一篇文章中讨论(Journal of Accident Analysis & Prevention.)
结果报告看这里：http://www.drianwalker.com/overtaking/

原文如下：

RoadBikeRider.com Newsletter
Issue No. 262 - 09/14/06:  7 Reasons to Train
ISSN 1536-4143
Side Effect of Cycling Helmets
Are you safer in a helmet? There's little question when it comes to avoiding or reducing head injury in a crash. But a British study has found that drivers pass closer when overtaking a helmet-wearing cyclist.
The researcher, Ian Walker of the University of Bath, rode a bicycle with ultrasonic distance sensors and a video camera to measure and verify distances. He was overtaken by about 2,500 vehicles. His findings:
---Drivers will pass a bare-headed cyclist with an average of 8 cm (3.1 inches) more clearance, presumably because the rider is seen as being less experienced or less predictable.
---Cars gave an average of 1.3 meters (4.3 feet) of room to any cyclist. Trucks passed 19 cm (7.4 inches) closer. Busses passed 23 cm (9 inches) closer.
Walker also wore a woman's wig to see if there was a difference in how drivers passed female cyclists. He was given an average of 14 cm (5.5 inches) more room.
Walker was hit by two vehicles during the study, which is to be published in the Journal of Accident Analysis & Prevention.

其实在中国，你骑车不带自行车头盔，货车司机对你无视，还有可能按喇叭驱赶你。

但如果你带戴安全头盔骑车，司机的眼睛里就有你，会考虑给你留出空间。 

佩戴自行车头盔的车友们

本文地址：http://blog.moonhelmet.com/read/2010053105.html

本文位置：跨速头盔-行业资讯-自行车头盔的负面效应