Concrete Q + A
A Roundabout Way of Reducing Accidents

From D+D Print, February 2015

by Todd Scharich, American Society of Concrete Contractors

Decorative concrete plays a ‘roundabout’ role in making America’s roads safer....
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Tagged categories: American Society of Concrete Contractors; Brick; Concrete stains; Concrete stamping; Concrete Surfacing; Decorative concrete; Decorative Finishes; Etched Surface; Insurance Institute for Highway Safety; MTJ Roundabout Engineering; Roads/Highways; Slip-Resistance; Traffic control; Washtenaw (Mich.) County Road Commission

Comment from Tom Schwerdt, (4/27/2015, 9:07 AM)

Modern roundabouts are great - much safer than a 4-way stop, and more throughput too.

Comment from Ronald Lewis, (4/27/2015, 7:57 PM)

A few of the early British developed 'Round-Abouts'in Singapore still remain, however, the also have "STOP-SIGNS" to control traffic.

Comment from Sarah Geary, (4/28/2015, 8:07 AM)

I like the one-lane models, however, the multiple-lane roundabouts make me feel very uncomfortable. People fly through there without slowing down and oftentimes cross into the other lanes. I suppose this has to do with the radius discussed in the article.

Comment from Tom Schwerdt, (4/29/2015, 8:28 AM)

Oh, Washington DC still has the miserable "Traffic Circles" with signals in them. Very inefficient way to get traffic through an intersection. Probably worked a lot better when they were originally built for horses and pedestrians with no signals.

Comment from Paul Braun, (4/29/2015, 9:25 AM)

They work beautifully in England and The Netherlands. Our local three year old roundabout STILL has people attempting to make their beloved left-hand turns onto it as they make their way to the casino

Comment from Chuck Pease, (4/29/2015, 5:51 PM)

You can make all traffic roadway controls as idiot proof as possible, but what you cant do is fix stupid. the maneuvers and driving I am witnessing here in Phoenix is deplorable. Everyone here thinks they are a NASCAR driver. But without the skills. Next thing I will be seeing is bump drafting!!!

Comment from Steve Wicks, (9/25/2015, 6:19 AM)

Roundabouts have a curious interaction with the culture and psychology of the nation or state in which they are located. In my experience, they work perfectly well in UK and Australia. The few examples I've negotiated in USA require an awareness of the completely different 'driving mindset' in that nation. If all users are not 'on the same page' then roundabouts become a fearful mess. There's a well-measured and universally understood degree of apparent 'aggression' used in Australia to negotiate roundabouts efficiently, that's roughly transferable to UK roads but would probably get you abused, if not arrested, in a similar situation in America. Whether America's ultra polite, very careful road manners can be 'adjusted' to make efficient yet comfortable use of roundabouts seems dubious. Signals on roundabouts and on ramps just defeats the whole purpose. Hopefully autonomous cars will soon render the whole question irrelevant...

Comment from Tom Schwerdt, (9/28/2015, 8:21 AM)

I have 3 roundabouts near my house in the USA, and they are used quite efficiently.

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