Alignment Indices as a Tool to Evaluate Safety and Design Consistency in Two Lane Rural Roads

With the objective of assessing the relationship between alignment indices and accident records, and the applicability of these indices to roadway design consistency evaluation for two-lane rural highways, a research project has been conducted at Madrid Polytechnic University. Data from eight Spanish highways with diverse terrain conditions divided into sections of homogeneous characteristics, excluding intersections, were analyzed. Ten alignment indices were considered, and their relation with crash rates over a 5 year period was analyzed. Based on the results of the analysis, the most suitable indices to evaluate roadway design consistency were identified. Additionally, threshold values of the selected indices for consistency rating of roadway segments were established. This consistency rating method was applied to a sample set of Spanish highway segments. The results show good agreement with those obtained with the Interactive Highway Safety Design Model (IHSDM) Design Consistency Module.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Castro, Maria
  • Pardillo-Mayora, Jose M
  • Sanchez, Jose F
• Conference:
  • 3rd International Symposium on Highway Geometric Design
  • Location: Chicago Illinois, United States
  • Date: 2005-6-29 to 2005-7-1
• Publication Date: 2005

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References; Tables;
• Pagination: 18p
• Monograph Title: 3rd International Symposium on Highway Geometric Design, June 29-July 1, 2005, Chicago, Illinois: Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Crash rates; Crash records; Highway design; Highway safety; Rural highways; Two lane highways
• Identifier Terms: Interactive Highway Safety Design Model
• Uncontrolled Terms: Design consistency; Highway alignment
• Geographic Terms: Spain
• Subject Areas: Design; Highways; I20: Design and Planning of Transport Infrastructure;

Filing Info

• Accession Number: 01004388
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Sep 27 2005 2:13PM