Dynamic Delineation System to Reduce Speeding An Innovative Application of In-Roadway Lights

After several unsuccessful attempts to reduce speed related crashes through conventional traffic control devices at an off-ramp on I-95 in Broward County, Florida, the Florida Department of Transportation (FDOT) proposed the application of the Dynamic Delineation System as a promising alternative to mitigate the potential for crashes. The Federal Highway Administration (FHWA) approved the provisional installation of the Dynamic Delineation System on this I-95 off-ramp with the purpose of reducing vehicle speed. This system consists of speed detection devices, which are tied to in-roadway lights. These lights activate by a logic relay, which determine if a pre-set safe approach speed is exceeded. The purpose of this system is to mitigate the potential for crashes and reduce the occurrence of sudden braking and last minute maneuvers by delineating the roadway (making the configuration more apparent to drivers) and providing a visual signal that induces the driver to slow down. Dynamic delineation is an innovative application of in-roadway lights, and its current application on this ramp is considered experimental. The system’s performance will be evaluated semiannually for two years. If proven successful, the FDOT will request the FHWA’s approval of this application of in-roadway lights.


  • English

Media Info

  • Media Type: Print
  • Features: CD-ROM; Figures; References; Tables;
  • Pagination: 12p
  • Monograph Title: Proceedings of the 12th World Congress on Intelligent Transport Systems

Subject/Index Terms

Filing Info

  • Accession Number: 01015849
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 16 2005 10:38AM