Effect of Pavement Marking Contrast on the Performance of Vision-Based Lane Departure Warning Systems

This paper investigates the effects of the colors of pavement and lane marking on the performance of a lane departure warning system (LDWS). A number of technologies have been used as bases for LDWS, including active wire guidance, laser, magnetic sensing technologies, differential global positioning systems (DGPS) and image processing technologies. Vision-based LDWS use image recognition software that analyzes the images collected by small cameras to track the pavement markings and then warn drivers when their vehicles perform unintended drifts out of the travel lanes using audible, visual, and/or tactile warning signals. Because vision-based LDWS depend on pavement marking tracking, the visibility of these markings is vital. The authors report on a study of the performance of the system that tested highway sections of different facility types and with pavements and markings of varying types and attributes in the states of Texas and Florida. The results indicate that the tested lane departure warning system was not able to detect the yellow markings for some highway segments with light concrete and asphalt pavement colors in daylight conditions. However, the tested LDWS device was able to detect the pavement markings on most tested sections during daylight conditions. The authors conclude that, based on analyses of the digital images taken of the pavement markings and the background pavement surfaces, that the inability to detect the yellow markings can be related to measures of the marking and pavement colors.

Language

  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Photos; References;
  • Pagination: 12p
  • Monograph Title: ITS Connections: Saving Time. Saving Lives

Subject/Index Terms

Filing Info

  • Accession Number: 01141984
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 5 2009 7:06AM