Safety Performance of Rural Four-Lane Undivided Roadways and Rural Four-Lane Roadways with a Two-Way Left-Turn Lane

The objectives of this project are: (1) to examine the safety performance of existing rural four-lane undivided roadways with/without 4 feet wide flush medians and rural four-lane roadways with a two-way left-turn lane (TWLTL) in Georgia, and (2) to develop criteria to determine when a four-lane undivided with/without a 4 feet wide flush median or a four-lane roadways with a TWLTL would be suitable on a four-lane roadway based on safety considerations.

Language

• English

Project

• Status: Completed
• Funding: $99852
• Contract Numbers:

  GDOT RP 19-15

• Sponsor Organizations:

  Georgia Department of Transportation

  One Georgia Center
  600 West Peachtree Street, NW
  Atlanta, GA  United States  30308
• Project Managers:

  Thapa, Sunil

• Performing Organizations:

  University Transportation Center for Alabama

  University of Alabama
  Tuscaloosa, AL  United States  35487
• Principal Investigators:

  Liu, Jun

• Start Date: 20190826
• Expected Completion Date: 20201231
• Actual Completion Date: 20201231

Subject/Index Terms

• TRT Terms: Four lane highways; Highway safety; Left turn lanes; Medians; Rural highways
• Geographic Terms: Georgia
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01744655
• Record Type: Research project
• Source Agency: Georgia Department of Transportation
• Contract Numbers: GDOT RP 19-15
• Files: RIP, STATEDOT
• Created Date: Jul 2 2020 2:02PM