Integrated expression method for technical mapping of traffic parameters using RGB color model

Jun Lee, Dongmin Lee, Kiichiro Hatoyama

Research output: Contribution to journalArticlepeer-review


In the field of traffic flow, speed, density, time, and distance are fundamental variables analyzed to predict traffic conditions. Reliable sources of information are gauged using tested mathematical approaches that have been developed. However, a fundamental diagram that could serve as a basis for expression techniques has not been devised. Red–green–blue (RGB) color modeling was used to overcome this limitation in traffic flow. The purpose of this study is to provide a way to understand traffic flow conditions based on features of three traffic flow elements simultaneously. The limitation of three-dimensional expressions in two-dimensional paper was extended to multi-dimensional information. Information on speed, density, and flow were combined into a single RGB color and given the name RGB flow-density space time-distance space. This cancels out the effect of each individual's vehicular trajectories and contains five major components of a specific road section. The new gizmo aims to provide information on traffic flow conditions in transition and to stimulate further approaches related to the predictions and understanding of traffic flow.

Original languageEnglish
Pages (from-to)1034-1045
Number of pages12
JournalJournal of Advanced Transportation
Issue number6
StatePublished - 1 Oct 2016


  • traffic systems
  • transportation


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