Complete roundabout guidance is contained in FDM 11-25 and 11-26.

A detailed listing with direct links is provided:

• Intersection control evaluation (FDM 11-25-3)
• General design (FDM 11-26-1)
• Design process and qualifications (FDM 11-26-5)
• Multi-modal considerations (FDM 11-26-10) 
• Agency and public coordination (FDM 11-26-15)
• Access control (FDM 11-26-17) 
• Operations (FDM 11-26-20)
• System considerations (FDM 11-26-25)
• Principal based design guidance (FDM 11-26-30)
• Signing and pavement marking (FDM 11-26-35) 
• Illumination, landscaping and maintenance (FDM 11-26-40) 
• Work zone traffic control (FDM 11-26-45) 
• Design aides (FDM 11-26-50) 

Download Qualified Roundabout Designers list (March 29, 2023​)

Contact:

Van Walling, P.E.
WisDOT Roadway Design Standards Engineer
​Van.Walling@dot.wi.gov
(608) 266-1585