Illuminating Traffic Signs with Innovative LED Techniques for Safer and Greener Roadways:--State-of-the-Art Practice in Taiwan

Traffic signs play important roles in traffic safety since they provide regulatory, warning, or guide information about upcoming roadway conditions to approaching road users. Traffic signs installed with good visibility and legibility can give road users enough time to react safely in time. Hence illuminate traffic signs during nighttime is critical for their overall performance. Various measures have been proposed for traffic sign illumination, yet each of them has its own advantages and disadvantages. Among these measures, LED technologies are found promising since they have advantages like lower energy consumption, longer lifetime, more luminous intensity, improved robustness, smaller size and faster switching. In this paper, state-of-the-art LED technologies recently developed in Taiwan, viz. SMD LED arrays approach and self-illuminating slim sign boards, are presented. Pilot studies using these newly developed technologies are introduced, meanwhile cost benefit of these projects are analyzed to evaluate adequacy of these technologies. It is observed from these pilot studies that the proposed SMD LED arrays approach and self-illuminating slim sign boards are cost effective, energy efficient, and can give much safer and greener roads. This means they are well eligible to be applied for improving visibility and legibility of traffic signs.


  • English

Media Info

  • Media Type: DVD
  • Features: Maps; Photos; References; Tables;
  • Pagination: 14p
  • Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

Filing Info

  • Accession Number: 01154504
  • Record Type: Publication
  • Report/Paper Numbers: 10-3397
  • Files: TRIS, TRB
  • Created Date: Jan 25 2010 11:42AM