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研究生:張碧慧
研究生(外文):Chang,Pi Hui
論文名稱:貓眼偵測度與車燈偏角之關係
論文名稱(外文):The Relationship between the Detectibility for Cat's Eye and the
指導教授:游志雲游志雲引用關係
指導教授(外文):Yu,Chi Yuang
學位類別:碩士
校院名稱:國立清華大學
系所名稱:工業工程研究所
學門:工程學門
學類:工業工程學類
論文種類:學術論文
論文出版年:1996
畢業學年度:84
語文別:中文
論文頁數:37
中文關鍵詞:路面反光標記貓眼回歸反射夜間偵測度
外文關鍵詞:retroreflective road markerscat's eyenighttime detectibility
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本研究之目的在探討夜間彎曲道路情況下,貓眼與車軸所形成之夾角大小
與駕駛人對其偵測率之間的關係,並藉此評估我國貓眼檢測標準是否符合
車燈光強度及人員偵測能力的需求。由於車燈的光錐呈發散型,光強度會
隨著離軸角度的增大而遞減,導致彎路上貓眼回反射至駕駛者眼睛的照度
亦隨之衰減,故而影響駕駛者的偵測能力。本研究佈置了兩條曲率半徑
為30m 的左、右彎道,實地模擬駕駛偵測狀況。實驗時於中央分向線上每
隔 1m 擺置一顆貓眼,並在外側車道擺置信號源。信號源為一長排5 顆貓
眼,會隨機出現在受測者可能成功偵測的範圍,範圍內劃分為6 階偏角,
每階增量為1 度。5 名受測者均視力正常且有駕駛經驗,受測車皆為自用
小客車。實驗結果得出,貓眼的50% 偵測偏角在左彎道上可達31.9 度(
SD=2.32度),右彎道上可達39.1度(SD=7.2度)。以此偵測偏角換算偵測距
離,並與各種道路曲率上,人車需求之0.5秒路線追蹤預留反應距離相比
較。結果顯示,我國貓眼檢測標準尚能符合車燈光強度及人員偵測能力的
需求。

This study intended to investigate the relationship between the
detectibility for cat's eye retroreflective marker on curve
roads at night and the deviation angle of car headlamps. In
addition, the results were used to evaluate whether our CNS
840418 draft fulfill with detectability requirements in real
driving condition. The investigation was conducted on two
simulated curved roads. The curved road was installed with cat'
s eye at 1m apart. The task was to detect the existence of the
target.The experiment consists of left and right turn driving
tasks. Five subjects aged between 20-40, with normal corrected
vision were recruited. Each was experienced driver and drove
his own sedan. The results showed that the deviation angle of
50% detectibility is 31.9 degree (SD = 2.32 degree) in left
turn road and 39.1 degree (SD = 7.2 degree) in right turn road.
Based on these experimental results, the detectability was
converted to detectable threshold. With this threshold, a
required 0.5sec tracking preview time was used to check against
detectability on various radius curved roads. The results
indicated that out CNS 840418 draft was fulfill the
detectability requirements.

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