Studies to determine the operational effects of shoulder and centerline rumble strips on two-lane undivided roadways.

Details

• Creators:
  Finley, Melisa D. ; Funkhouser, Dillon S. ; Brewer, Marcus A.
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Roads--Shoulders Road Shoulders Rumble Strips--Texas--Evaluation Rumble Strips
• Publication/ Report Number:
  FHWA/TX-09/0-5577-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Sept. 2006-Aug. 2008
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  This report describes the methodology and results of analyses performed to (1) evaluate the impact of
  
  shoulder rumble strips (SRS) and centerline rumble strips (CRS) on the placement of vehicles in the travel
  
  lane of two-lane, undivided roadways and (2) determine the minimum shoulder width required for drivers to
  
  correct errant vehicle trajectories once alerted by passing over SRS. Field studies indicated that CRS on twolane,
  
  undivided roadways with lane widths as narrow as 10 ft do not adversely impact the lateral placement
  
  of the vehicle in the travel lane. In fact, at locations with smaller shoulder widths (1 to 2 ft) drivers
  
  positioned the center of their vehicles closer to the center of the lane. Similar effects were found at locations
  
  with both edgeline rumble strips (ERS) and CRS. The impact of SRS located within 7 to 9 inches of the
  
  edgeline on the lateral placement of vehicles in the travel lane was less clear. However, it does appear that
  
  SRS located near the edgeline may shift vehicle travel paths closer to the centerline. In contrast, SRS located
  
  35 inches from the edgeline did not seem to impact the lateral placement of vehicles in the travel lane. In
  
  addition, lateral offsets that position the center of 16-inch SRS in the middle of the shoulders at least 4-ft
  
  wide should provide enough remaining shoulder width for the 85th percentile distracted driver to correct their
  
  errant vehicle trajectory before leaving the paved roadway surface. Additional findings from all of the studies
  
  and detailed recommendations are discussed in the report.
  
  
• Format:
  PDF
• Funding:
  0-5577
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:6eb5d9db43d9d1767a4af9969d82edb29657fb0eec380ba4a0087c45094cb3e9d86e8fa7cc7293754aea55ac4c8d9a92f3ec668d89de93bc6a8c163893b53833
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16763/dot_16763_DS1.pdf
• File Type:
  [PDF - 1.03 MB ]