I haven't seen the latest roundabout, but I have found the one south of
there, at Thompson and county TT, to be somewhat scary for bicyclists
going southbound, because the cars coming west on TT are going at high
speed.  I don't know what the speed limit is, but I'm sure they are
exceeding it.  It's a downhill and cars definitely don't slow down
entering it if they are going left onto Thompson.

"It is dangerous to be right in matters on which the established
authorities are wrong."--Voltaire (1694-1778)
Direct Cost of U.S. War and Occupation of Iraq
$501,352,598,039

>>> "Matt Logan" <[EMAIL PROTECTED]> 3/12/2008 9:06 AM >>>
It sounds like one of those studies was on roundabouts with speeds
greater than 30mph (I assume that the speed limit in the
Zier/Lien/Thompson area is 30 or less).  It is unclear from the
abstract
if that is the speed within the roundabout, or prior to the
roundabout.
One of the other studies indicated that education of bicyclists could
significantly reduce the risks.  

The WisDOT site (
http://www.dot.wisconsin.gov/safety/motorist/roaddesign/roundabout.htm
)
suggests that there is a 10% reduction in bicycle crashes provided by
roundabouts.  WisDOT seems to have obtained this data from an
Insurance
Institute for Highway Safety study of 24 roundabout intersections in
eight states, and other studies.


The WSJ article lacks much in the way of specifics, so it is hard to
say
if this particular roundabout would pose an increased risk to
bicyclists
until we get more details.  It is certainly something to keep in mind.

Since it seems bicyclist education can improve roundabout safety, I
decided to copy the information from the state*s roundabout
brochure:

http://www.dot.wisconsin.gov/safety/motorist/docs/roundabout-brochure.pd

f

Note to bicyclists:

If you are riding on the shoulder or bike lane, merge into the traffic
lane before the shoulder ends. Prepare for this move early, look over
your shoulder, and signal your intent to move into traffic. Don*t be
intimidated; assert your position upon entering the roundabout. 

Once in the roundabout, don*t hug the curb. Ride close to the middle
of
the lane to prevent cars from passing and cutting you off. Watch for
cars waiting to enter the roundabout, as they may not see you. 

If you do not want to ride your bike in the roundabout, you may enter
the sidewalk using the ramps, and proceed as a pedestrian.


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On
Behalf Of [EMAIL PROTECTED] 
Sent: Wednesday, March 12, 2008 12:01 AM
To: [email protected] 
Subject: [Bikies] New East Side roundabout: Depending on design etc.
bikeaccidents & deaths may increase.

The Wisconsin State Journal has an article about a new roundabout at
Lien, Thompson and Zeier roads near East Towne Mall HERE.

Several recent European studies indicate that depending upon
roundabout
design details, placement, and other factors, roundabouts can increase
cyclist injuries and fatalities. 

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