Laserfiche WebLink
,.03/26/98 THU 15:44 FAX 612 490 2150 SEH 0 002 <br /> • <br /> 4...rirefi• <br /> A ►� MEMORANDUM <br /> ■ST.PAUL,MN O MINNEAPOLIS, MN o ST.CLOUD, MN O CI•IIPPEWA FAU,S,WI O MADISON,WI CI LAKE COUNTY,IN <br /> TO: Jim Erickson,City of Mounds View <br /> FROM: Tom SohrweidelliV7 <br /> DATE: March 26, 1998 <br /> RE: Greenwood Drive Traffic Diversion <br /> SEH No.A-MOUND9805.00 <br /> Steve Campbell has forwarded your FAX to me regarding the traffic diversions on Greenwood Drive. <br /> As Chair of the North Central Institute of Transportation Engineer's(NCITE)Neighborhood Traffic <br /> Control Committee, I have kept aware of various traffic calming techniques and have the following <br /> observations. <br /> • Generally,creating a curvilinear alignment reduces traffic speeds. However,if it isn't done abruptly <br /> enough,drivers can straighten out the curves,thereby minimizing the effect on their speed. Another <br /> concern which rue seen in many situations, is that while physical features, such as curves may slow <br /> vehicle speeds,complaints and problems can continue as vehicles are driving too fast for conditions. <br /> While they may have been driving 35 mph previously, a reconstructed alignment desires to slow <br /> speeds to 20 mph, while they actually drive it at 25 mph. This can result in vehicles crossing the <br /> centerline or losing control. <br /> Of the two options, Option 1 combines two features. Roadway narrowing and curvilinear alignment. <br /> The closer the protrusions are together,the more potential to impact speed. Caution needs to be taken <br /> _ - -ira,i i- ,r.rne.- a I - , r •- ,lLar access. <br /> Option 2 uses curvilinear alignment only. Although this can work, it creates greater opportunity for <br /> drivers to try and smooth out the curves and/or drive too fast for the new condition. <br /> • A recent MnDOT survey of metro area traffic calming activity categories which included street <br /> narrowing and horizontal realignment generally were reported to result in improved street safety. <br /> If you have any questions relative to the above or desire additional information,please call me at 490- <br /> 2072. <br /> • is <br /> c: Steve Campbell, SEH <br /> sATRANSNQUNP RWD,WPD <br /> An AJjvmetiveAdiout, <br /> E4ral OPPoMwity EePleyer <br />