DIAGRAMMATIC GUIDE SIGNS FOR USE ON CONTROLLED ACESS HIGHWAYS: VOLUME I. RECOMMENDATIONS FOR DIAGRAMMATIC GUIDE SIGNS

THE PURPOSE OF THE DIAGRAMMATIC SIGNING RESEARCH PROJECT WAS TO DEVELOP WARRANTS AND STANDARDS FOR THE USE OF DIAGRAMMATIC GUIDE SIGNS ON CONTROLLED ACCESS HIGHWAYS. VOLUME 1 SUMMARIZES THE ENTIRE DIAGRAMMATIC SIGNING RESEARCH PROGRAM OBJECTIVES SPONSORED BY THE FEDERAL HIGHWAY ADMINISTRATION. IT PRESENTS THE RECOMMENDED WARRANTS, STANDARDS AND GUIDELINES FOR DIAGRAMMATIC GUIDE SIGNS AND THE RESEARCH BASIS FOR THE RECOMMENDATIONS, AND SUGGESTS TECHNIQUES AND MEASURES FOR THE EVALUATION OF HIGHWAY SIGNING. THIS VOLUME WAS PREPARED JOINTLY BY THE OFFICE OF RESEARCH, FEDERAL HIGHWAY ADMINISTRATION, AND BIOTECHNOLOGY, INC. RESEARCH FINDINGS OBTAINED UNDER THE PROJECT INDICATE THAT DRIVERS REQUIRE MORE TIME TO READ AND INTERPRET INFORMATION ON DIAGRAMMATIC SIGNS IN COMPARISON WITH CONVENTIONAL SIGNS. MOREOVER, AS THE GRAPHIC COMPONENT ON THE SIGN BECOMES MORE COMPLEX, DRIVER INFORMATION INTERPRETATION TIME INCREASES. ACCORDINGLY, IN THOSE CASES WERE DIAGRAMMATIC SIGNS HAVE BEEN RECOMMENDED, THE STANDARDS SPECIFY THAT SIMPLE GRAPHIC DESIGNS MUST BE USED. RESEARCH RESULTS CLEARLY INDICATE THAT DIAGRAMMATIC GUIDE SIGNS WILL PRODUCE A BENEFIT TO MOTORIST PERFORMANCE AT INTERCHANGES WHERE TRAFFIC MUST EXIT TO THE LEFT OF THE THROUGH ROUTE. SUCH INTERCHANGES INCLUDE MAJOR FORKS WHERE EXITING TRAFFIC MUST TAKE THE LEFT FORK. ALSO INCLUDED ARE INTERCHANGES WHERE THERE IS A SINGLE LEFT EXIT FROM THE ROADWAY AND WHERE THERE IS A LEFT EXIT IN COMBINATION WITH A RIGHT EXIT. /FHWA/

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• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/16446
• Corporate Authors:

  Federal Highway Administration

  Traffic Systems Division, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Biotechnology, Incorporated

  3027 Rosemary Lane
  Falls Church, VA  United States  22042
• Authors:
  • Mast, T M
  • Kolsrud, G S
• Publication Date: 1972-12

Media Info

• Pagination: 55 p.

Subject/Index Terms

• TRT Terms: Access control (Transportation); Diagrams; Driver performance; Drivers; Graphics; Guide signs; Information management; Information, data, and knowledge; Intersection elements; Left turns; Personnel performance; Signs; Silos
• Uncontrolled Terms: Access control
• Old TRIS Terms: Graphic methods
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225053
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: FHWA-RD-73- 21 Final Rept, FCP 21N2-814
• Contract Numbers: FH-11-7815
• Files: NTL, TRIS, USDOT
• Created Date: Mar 15 1976 12:00AM