Driver response to delineation treatments on horizontal curves on two-lane roads.

Details

• Alternative Title:
  Project title: Developing comprehensive roadway delineation guidelines
• Creators:
  Chrysler, Susan T. ; Re, Jon ; Knapp, Keith S. ; Funkhouser, Dillon S. ; Kuhn, Beverly T.
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Highway traffic control
  • Traffic control devices
  • Highway planning Traffic signs and signals--Texas--Psychological aspects
  • Highway planning--Texas
• Publication/ Report Number:
  FHWA/TX-09/0-5772-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Sept. 2006-Aug. 2008.
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  The delineation of horizontal curves on two-lane rural roads is an important component of safety ; improvements to reduce run-off-road and head-on crashes. This project assessed four types of vertical ; delineation in conjunction with edgeline markings through a closed-course nighttime driving test, a survey of ; drivers using video clips of curves, and a field test of vehicle performance at four sites in rural Texas. The ; treatments evaluated were standard post-mounted delineators with a single reflector at top and one with ; retroreflective material the full length of the post, standard chevrons, and chevrons with yellow ; retroreflective material applied the full length of the post. The results show that vertical delineation of any ; type improves vehicle lane position at the entry and mid-point of horizontal curves. Fully reflective postmounted ; delineators improved lane position and reduced encroachment more than standard posts. The two ; styles of chevrons performed equally well and both showed significant speed reduction when compared to ; pavement markings alone.
  More +
• Format:
  PDF
• Funding:
  Project 0-5772
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16852/dot_16852_DS1.pdf
• File Type:
  [PDF - 1.47 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:9f42e1250a24dbe104dfe214ec65495ad2a5624c1123311e23b08c195bbdcd15f0b9542784d2bfeb5910a10b9d24c27ee92641dc960f1e3f6bc7e1bd17ca1d0a