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• November 8, 1995 <br />File: 230 - 000 -00 <br />CONSULTING ENGINEERS <br />1326 Energy Park Drive <br />St. Paul, MN 55108 <br />612- 644.4389 <br />1- 800 - 888 -2923 <br />Fax: 612 -644 -9446 <br />Mr. Pat Klaers. <br />City Administrator <br />City of Elk River <br />13065 Orono Parkway <br />P.O. Box 490 <br />Elk River, MN 55330 <br />RE: TRUNK HIGHWAY 169 CORRIDOR <br />Dear Mr. Klaers: <br />5.1Oh. <br />At a Council meeting last month, Councilmember Dietz asked me to investigate the <br />likelihood of getting warning lights installed prior to the signals on TH 169. He <br />specifically referred to the type of warning light that flashes when the signal is about to <br />CIVIL ENGINEERING: turn red, and the warning lights are off when the signal light is in green mode. These are <br />ENVIRONMENTAL similar to the type of installation along Highway 65 through North Anoka County. <br />MUNICIPAL <br />•PLANNING I'have discussed this issue with Tom Dumont of the District 3 Traffic Division. He <br />SOLID WASTE indicated that MnDOT's current position is not to install this type of warning device. He <br />STRUCTURAL indicated that there are two major concerns with these devices. First is the liability <br />SURVEYING associated with failure. If the motoring public relies on the warning device and, should <br />TRAFFIC one of the lights be burned out, they could possibly approach a red signal without <br />TRANSPORTATION sufficient time to stop. The other concern of MnDOT is that these devices could have the <br />opposite effect on large trucks, specifically the gravel trucks. When a warning is given <br />ELECTRICAL/MECHANICAL that the signal is about to turn yellow and ultimately red, MnDOT is concerned that these <br />ENGINEERING: larger vehicles would have a tendency to accelerate trying to make the green light, rather <br />HVAC than slowing down and preparing to stop, then having to start from a dead stop with a <br />POWER DISTRIBUTION heavy load. Therefore, MnDOT is currently under direction not to install these <br />SCADA throughout the state. <br />SYSTEM CONTROLS <br />If you have any questions regarding this, please call. <br />Sincerely, <br />MSA, CONSULTING ENGINEERS <br />An Equal Opportunity Employer <br />XA&r4t� <br />OFFICES IN: <br />Terry J. Maurer, P.E. <br />• MINNEAPOLIS <br />PRIOR LAKE <br />TJM:tw <br />ST. PAUL <br />000- 0815.nov <br />WASECA <br />An Equal Opportunity Employer <br />