Practices and Guidelines for Temporary Transverse HMA Tapers

During hot mix asphalt (HMA) construction and rehabilitation, partially completed pavements are often opened to traffic between construction periods. This results in transverse dropoffs at the transition between pavements of different elevations. The California Department of Transportation follows the common practice of constructing transverse tapers (or wedges) of hot mix asphalt (HMA) between the different pavement levels. Practices vary greatly nationwide for temporary transverse HMA tapers on such factors as taper slope; HMA mix design; and requirements based on dropoff height and speed limit. Tapers that are too abrupt for conditions may result in a rough ride for motorists. This Preliminary Investigation found a lack of research on temporary tranverse HMA tapers. There is little documented evidence for the wide spectrum of practices pursued by different states.

• Record URL:
  • http://www.dot.ca.gov/newtech/researchreports/preliminary_investigations/docs/hma_tapers_preliminary_investigation_5-4-10.pdf
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/747283636
• Supplemental Notes:
  • Preliminary Investigation requested by Chris Cummings, California Department of Transportation, Division of Research and Innovation.
• Corporate Authors:

  CTC & Associates LLC

  4805 Goldfinch Drive
  Madison, WI  United States  53714

  California Department of Transportation

  Division of Research and Innovation
  1227 O Street, MS-83
  Sacramento, CA  United States  94273-0001
• Publication Date: 2010-5-4

Language

• English

Media Info

• Media Type: Web
• Features: References; Tables;
• Pagination: 21p

Subject/Index Terms

• TRT Terms: Asphalt pavements; Hot mix asphalt; State of the practice; Tapered traffic lanes; Transverse joints
• Identifier Terms: California Department of Transportation
• Subject Areas: Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01352453
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: CALTRANS, TRIS, STATEDOT
• Created Date: Sep 23 2011 7:27AM