2010 Joint School Science Exhibition PH14 Pooi To Middle School
Limitor
Information Pack
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简介
「马路如虎口」这句说话大家都不陌生,路上发生的意外其中一个最大的源头
乃来自超速驾驶. 在车辆行驶的道路旁边,每隔一段路便设置一个上面写著数字的牌子,上面显示的数字指出 整条路上行驶不得超过的最高车速.这个有提示车速限制作用的牌子名为限速牌.为防止意外发 生,驾驶人士必须依照限制的车速调整车辆的速度.然而很多驾驶人士都不跟从限速牌,随自己喜 欢的速度驾车,在遇到超速侦测仪器时才减速.正因为他们的疏忽,意外很多时就是在车速过高以 致不能及时减速的时候发生. Limitor 是一采用了 RFID 的道路装置,整个系统会把汽车车速,汽车行驶的时间以及每隔一 路段的限速纪录,再组合成图表,让官方人员定期检查时能得知车主行驶时的车速情况.一旦发 生意外,警方亦能检查有关人士的 Limitor 纪录,以得知事主有否超速,以及在何时超速. Limitor 能增加驾驶者对於超速驾驶的警觉性,以达致安全驾驶,把意外发生的机会减至最 低.
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Introduction
We always hear people say, "Roads are as dangerous as the mouth of a tiger". Actually, one of the sources of traffic accidents is speeding. Beside the roads, there are signs on which are printed a number that shows the highest speed of that part of road. To avoid accidents, drivers have to adjust their speed to not exceed the highest speed. However, most of the drivers do not do so and drive with whatever the speed they like. When encountering devices beside the roads that record the speed of their cars, they lower their speed at that moment. Because of their ignorance and imprudent, accidents happen all the time. Limitor is a device designed to record the speed of cars, length of driving time and the highest speed of every part of roads through the adaptation of RFID technology. Soon then all the data collected will be made up as a graph. Government when checking the graph will know the circumstances of the driving speed. Furthermore, if there are accidents, police can know if the suspect has exceeded the highest speed and when he exceeded referring to the records of Limitor. Limitor can alert drivers of the risks of speeding, as they cannot hide the truth if they do so, therefore achieving the aim of driving safely and lowering the probability of accidents.
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意念及目的
每一年因车祸而丧生的人不计其数,其中导致车祸的最主要元凶就是超速驾驶.虽然政府在 道路旁设有超速侦测仪器,但是由於数量有限以及摄影机只能在固定点拍摄,因而存在很多盲点. 就如於今年一月份在上水,一架超速的冻柜货车撞倒两母女,酿成人间惨剧,儿子头破骨折 重伤危殆,妇人则被卷入车底辗毙.出事路面限速五十公里,但据工程师估计,当时车速达到八 十公里. 又如弥敦道上百年的"亡命小巴",当行驶高速公路,司机们为了以最快速度到达目的 地,车速往往高达每小时一百多公里,而一般的高速公路限速则为每小时八十公里. 而於零九年旺角就有一宗涉及通宵小巴的严重交通意外,造成多人伤亡,令小巴的安全再次 成疑.即使有了这麼多的教训,许多人依然罔顾超速驾驶的危险性,而政府所实施的措施明显存 有很多漏洞,司机大可以准确找出超速侦测仪器的位置,当驾驶至附近时则放慢车速,这样就可 以避免被抓到,而且超速侦测仪器的覆盖范围并不大,如在上水发生的车祸,当时并没有超速侦 测仪器拍摄到.

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