在車燈之相關研究中，多以位置與色光為主，測得反應時間或疲勞程度。然而隨著發光技術的進步，現今車燈以高亮度發光二極管(LED)為主要光源之設計漸漸變多，LED具省電、高效能並可自由組合的特色，未來趨勢將會代替現有燈泡光源並發展出許多具特色的車燈設計，但國內車燈製造上仍以光學投射為主要研發方向，與傳統燈泡為主之研發並無二致。有鑑於此，本研究提出創新符號指示型車燈設計，並規劃視感知動態實驗，以測得駕駛與車燈互動時視感知因子的反應。
本實驗共分二階段進行，第一部份進行特定跟車距離下，以視覺顯示器為主要模擬工具，測得於不同背景、光色以及不同符號設計下對應於視銳度測量。第二部份進行動態視感知測量，在模擬跟車狀況下，在紅色與黃色不同色光下，傳統型、單方向、增強型與噪音型之自製符號指示型車燈，對應於安全性、清晰性、辨識性、警示性、指向性的視感知反應值。結果顯示出在單一色光中，以紅色-單向型、黃色-增強型效果最佳；此外在滿意度與視感知因子中，以辨識性為最強，黃色單向型與安全性、清晰性與指示性具顯著影響，整體而言，訊號越強的滿以程度越高，但並不直接影響視認知因子。
本研究建議可將符號指示型車燈之研究發現，進而形成第三方向燈的設計，進而提升跟車駕駛時安全性。

Since objects as back car lamp had been designed as instruction of direction and ambient as motion of front-following car. How does the interaction of object-ambient to following car driver in visual perception? Meanwhile, traffic laws and regulations limited direction car lamp in blinking rate, lighting area and luminance. When LEDs (Light-Emitting Diodes) becomes a alternative lighting material instead of traditional bulb. Because of small lighting body, we can use LEDs in pixel concept to design lighting equipment. However, this research is based on dynamic scenery experiment, which involved 2 experiments and 1 questionnaire. Experiment I is to find out the proper direction symbol in backgrounds and symbol colors. Experiment II is measuring visual perception of following drivers with 4 types designed symbolic direction light in colors with schemas. Questionnaire is content of 5 variables in visual perception of Safety, Indicated ability, Clearness, Discriminability and Warning. The quantitative analysis of the questionnaires was conducted through descriptive statistics and Person correlation in order to indicate the relation ship between visual perception variables in set of schemas. Result of this study showed enhanced signal in red color indeed increase driver’s intention. When choosing by color lights, Red-Type2 and Yellow-Type3 has the best performance. And the indicate sense of perception is most effective in all perceptions. However, we can suggest future studies in changing styles of arrows, setup position and in order to third direction light in related regulations for increasing driving safety.

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