Narrowing Freeway Lanes and Shoulders to Create Additional Travel Lanes

The Federal Highway Administration is investigating narrowing freeway lanes and shoulders as a cost-effective mobility strategy. The objectives of this project were to develop improved macroscopic analysis tools, calibrate car-following models that capture narrowed lane driving behavior, conduct real-world case studies, develop narrowed lanes deployment recommendations, and investigate dynamic lane-narrowing technologies. The case studies showed that the lane-narrowing treatment improves mobility significantly without compromising safety.

• Record URL:
  https://www.fhwa.dot.gov/publications/research/operations/21005/21005.pdf
• Summary URL:
  https://www.fhwa.dot.gov/publications/research/operations/21005/index.cfm
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/57273
• Corporate Authors:

  Leidos, Incorporated

  11251 Roger Bacon Drive
  Reston, VA  United States  20190

  University of Kansas, Lawrence

  Lawrence, KS  United States  66045

  Aimsun, Incoporated

  New York, NY  United States 

  University of Virginia, Charlottesville

  Charlottesville, VA  United States 

  Kittelson & Associates

  Portland, Oregon  United States 

  PTV Group

  Portland, OR  United States 

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Federal Highway Administration

  Turner-Fairbank Highway Research Center
  McLean, VA  United States  22101
• Authors:
  • Hale, David
  • 0000-0001-5486-9367
  • Kondyli, Alexandra
  • 0000-0002-3462-0000
  • Argote, Juan
  • 0000-0003-0294-9247
  • Zhang, Xiaoxiao
  • 0000-0003-1545-8041
  • Schroeder, Bastian
  • 0000-0001-8916-421X
  • Button, Levi
  • 0000-0002-9697-1543
  • Atkinson, Jennifer
  • 0000-0002-5523-4205
  • Stock, Daniel
  • 0000-0002-6597-950X
  • Cheema, Adil
  • 0000-0003-3103-7757
  • Sajjadi, Soheil
  • 0000-0001-7635-4399
  • Aycin, Murat
  • 0000-0002-5798-3381
  • Brackstone, Mark
  • 0000-0003-2087-9385
  • Canayon, Geline
  • 0000-0001-7742-9399
  • Casas, Jordi
  • 0000-0002-7110-8751
  • Lenorzer, Annique
  • 0000-0003-3313-8623
  • Jia, Anxi
  • 0000-0001-5086-9693
  • Joshi, Chetan
  • 0000-0002-6242-5181
  • James, Rachel
  • 0000-0001-9138-510X
• Publication Date: 2021-6

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Maps; Photos; References; Tables;
• Pagination: 156p

Subject/Index Terms

• TRT Terms: Car following; Case studies; Highway design; Road shoulders; Traffic lanes; Width
• Subject Areas: Design; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 01778835
• Record Type: Publication
• Report/Paper Numbers: FHWA-HRT-21-005
• Contract Numbers: DTFH61-16-D-00030
• Files: NTL, TRIS, ATRI, USDOT
• Created Date: Aug 9 2021 9:44AM