隨著科技進步與交通營運需求之發展趨勢，國內外的交通列車在近幾年開始出現數位化與螢幕化的資訊設備，將訊息從傳統的平面告示牌溝通轉向為動態的傳播形式，也為使用者的乘車體驗帶來相當重要的改變。訊息如何設計和如何展現會直接影響使用者的判斷與乘車決策，而鐵道支線的訊息設計其重要性往往被忽略，卻是旅客最需要的，本文針對使用者需求與視覺設計的面向，對「台鐵沙崙線列車資訊顯示器介面」進行設計實驗，透過理論知識進行介面的視覺設計元素分析，從使用者任務測試中了解使用效能及使用者的行為反應，並依據訪談過程了解使用者的訊息需求與對介面的使用感受。本研究結果與建議包括：（1）依照情境狀態描述與規劃訊息層次與架構；（2）應用版面編排準則建構視覺介面以提高閱讀的流暢度；（3）適切文字採用，確保每個文字都能被清楚辨認；（4）運用字級大小與粗細區別訊息的重要程度；（5）保持圖形設計風格一致，並具備聯想性、易讀性與易記性，可輔助文字傳達；（6）加強不同訊息間的圖形差異，可避免認知混淆；（7）選用能夠表達設計概念與特質的色彩以增加使用者的記憶度；以及（8）保持色彩應用適當的數量組合與明度對比，以提高注目性。總之，介面所提供的視覺訊息應具備完整的訊息架構讓使用者易於辨識，以提供舒適友善的視覺訊息服務。

With the rapid changes of technology, the travel information on public transit has digitalized and displayed in dynamic ways to transfer messages and information. Digitalized wayfinding and signage system alter the ways of information communication, with which has been providing every commuters and travelers new experiences in receiving information. The representation of information directs users’ decision making. The importance of the visual representation design for railway branch line is often neglected but it is indeed needed by commuters. This paper addresses the essential design guidelines for visual representation based on user needs through a case study on Shalun Line, a Taiwan Railway branch line. Results show that the visual representation requires (1) the framework and the hierarchy to be established to show the scenario; (2) the basic fundamental grid system with which to enhance the reading experiences; (3) careful selection of the type font, with which to allow every single characters or words to be clearly read; (4) the proper use of font size and its features to show the key points; (5) to be designed in a way for the ease of reading and memorizing, and keep the same image style all the way through the whole design; (6) more diverse representation style for the differentiation of information to avoid confusion; (7) good use of color scheme which can enhance users’ recognition and memorization; and (8) proper color application and its brightness for higher attention from users. In sum, an information design needs to be designed in a way for ease of use and understanding and requires an integrated information architecture with which to clearly show the information to users and to provide better visual representation service to them.