Data visualization is a crucial part of every research with any data, including traffic research. In this presentation, I will discuss how the velocity information of a vehicle can be visualized along with the car’s 2-dimensional position information. I proposed to visualize the velocity as a surface in a 3-dimensional space, where the greater surface represents higher speed. The strengths and weaknesses of this approach will be discussed. The technical details to implement the proposed 3-dimensional visualization will be also discussed
