
中台科技大學視光系主任葉上民指出,夜間道路照明不足會導致視覺功能下降,增加行人與駕駛碰撞風險,其危害程度遠大於疲勞或酒駕。他建議提升市區道路環境亮度,調整車燈投射高度,並改進路牌設計以增強夜間辨識度。
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文章指出夜間道路照明不足是影響行人和駕駛安全的重要因素,專家引用國外研究表明低照明環境導致的視線問題遠大於疲勞或酒駕造成的風險。
夜間照明影響用路人及駕駛視線安全。(市府提供)
針對道路夜間照明不足恐導致交通事故增加,中台科技大學視光系主任葉上民指出,低環境亮度將會導致視覺功能下降 ,國外已有研究低照明環境是行人、用路人在夜間道路與障礙物發生碰撞的主要原因,其程度遠大於疲勞或酒駕;他建議,應提升市區道路環境亮度,減少瞳孔受車燈影響縮放,出現「眩光」或短暫「視盲」現象,影響行車安全。
葉上民指出,眼睛瞳孔在低環境亮度下會擴大,轉換至明亮場域時瞳孔隨之縮小,正常的瞳孔收縮反應時間約需1秒,擴張約需5秒,若突然由亮到暗的環境,原縮小的瞳孔需要擴大到能接收足夠光線判斷影像,易出現短暫「視盲」現象;反之若由暗進入較亮的環境,瞳孔縮小速度若不及光源進入眼底,就易出現「眩光」,均不利辨識環境。
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葉上民說,行車車速快的情況下眼睛視野會變狹窄,夜間行車更需靠足夠光源辨識,國外已有研究指出,低照明環境是行人、用路人在夜間道路與障礙物發生碰撞的主要原因,其程度遠大於疲勞或酒駕;針對夜間駕車的照明設計,他建議,應提升市區道路環境亮度減少瞳孔因為車燈進入視線所需要縮放的幅度,車輛應降低車燈投射高度,避免在無路燈的郊區或高快速公路較暗路段,因車燈直接照射對向來車造成的眩光不適與風險。
此外,路牌自明性也影響夜間交通安全,逢甲大學運輸與物流系助理教授洪百賢建議,路牌設計應以能穩定且能長時間被看見為原則,現行道路路牌有兩種型態,一種是自帶光源的路牌,另一種則是能反射光源的傳統式路牌,目前道路路牌多屬傳統路牌居多,靠路燈或車燈輔助光源,路牌材質日新月異,多能達到光源高反射效益,一般車燈就足以照明辨識,但重要道路包括主要道路、路口分叉點等,均因車流量大,照明允許失效程度低,可採自帶光源的主動式光源路牌或標誌,確保讓駕駛看得見。
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台中路燈2-2》釀夜間事故 低照明比疲勞、酒駕危害大

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