The Protected Roundabout

Born in Europe decades ago, with a stellar track record for safety and livability, protected intersections have now been installed in Salt Lake City, Utah; Austin, Texas; Chicago, Illinois; and Davis, California. Protected intersections allow for a protected bike lane through the intersection, while mostly separating bicyclists and pedestrians from motor vehicles! Visit protectedintersection.com for more.

We think that modern roundabouts are a fantastic intersection treatment. Now consider what we like to call the "protected roundabout" (previously known as the "Dutch" style roundabout). The protected roundabout concept is the same: a protected bike lane and sidewalk through the intersection with increased safety for bicyclists and pedestrians (and drivers!). 

The photovision in our banner above shows a protected roundabout continuing the protected bike lanes right through the intersection. Bicyclists cross the side street (see the right of white SUV right side) on the their own path adjacent to yet separated from pedestrians. (Envisioned by WALC Institute and TDC Studios for 25th Street in Columbus, Indiana).

IMAGES

this two-lane protected roundabout shows how a protected bike lane continues through the intersection. this design is not as safe as a single-lane roundabout because of the "multi-lane threat" for people crossing the street. (envisioned by walc institute and tdc studios for the pearsall park neighborhood in south san antonio, texas)

roundabout in the netherlands with protected bike lane through it.

VIDEOS

PROTECTED ROUNDABOUT DESIGN GUIDANCE

THE MASSACHUSETTS DEPARTMENT OF TRANSPORTATION CREATED A DESIGN GUIDE THAT INCLUDES GUIDANCE ON ROUNDABOUTS WITH SEPARATED BIKE LANES (THIS IS PAGE 76 OF CHAPTER 4: INTERSECTION DESIGN): https://www.massdot.state.ma.us/Portals/8/docs/SBLG/Chapter4_Intersections.pdf

MASSDOT DESIGN GUIDE - PAGE 77 OF CHAPTER 4: INTERSECTION DESIGN: HTTPS://WWW.MASSDOT.STATE.MA.US/PORTALS/8/DOCS/SBLG/CHAPTER4_INTERSECTIONS.PDF

 

BLOG POST LINK (Please click photo below to be redirected to blog.)

This blog post link about is a great explanation regarding the safety benefits of using the correct design, with European examples