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<br />lOA :3 <br /> <br />MEMORANDUM <br /> <br />COMMUNITY DEVELOP.M.ENT SERVICES <br />Engineering & Construction <br /> <br />TO: <br /> <br />Edgewood Traffic Calming Committee <br /> <br />FROM: <br /> <br />Dan Smith, Engineering & Construction <br /> <br />RE: <br /> <br />EDGEWOOD SPEED HUMP EVALUATION REPORT <br /> <br />Introduction <br />Speed humps were installed on Edgewood Road between Alameda de las Pulgas and Melrose <br />Place in late December 1999. Stop signs were concurrently installed on Blandford Boulevard at <br />Turnsworth and Woodsworth Avenues. Council direction in authorizing the hump and stop <br />installations was that they be evaluated after four (4) months. These are the findings of that <br />evaluation. <br /> <br />Data Collection <br />Prior to hump installation, traffic volume measurements were taken over a broad area where <br />traffic patterns might potentially be affected by the humps. Peak hour traffic turning counts <br />were also taken for the intersections of Alameda de las Pulgas with Whipple Avenue, and with <br />Edgewood Road, during the A.M. and P.M. commute peaks. Traffic speed and traffic noise <br />measurements were also taken prior to hump installation, but these were taken only in areas <br />most clearly directly affected by the humps. Most "before hump" traffic data was collected in <br />November and early December, 1999. After the humps had been in place, the traffic volume, <br />(speed and noise measurements) were repeated at the same locations. The "after" traffic <br />volume and speed data was taken in April and early May, 2000. This brief report documents <br />the apparent traffic volume, speed and noise changes that occurred after the humps were <br />installed. <br /> <br />Traffic Volume <br />FiGure 1 presents the "before" and "after" dailv traffic volumes over a larGe area of northern <br />Redwood Citv. All counts are bv direction of travel. The fiGure includes: <br /> <br />,. data on Edgewood and all the potentially affected local streets in its immediate vicinity <br />including Arlington, Blandford, Durlston, Turnsworth and Woodsworth, <br /> <br />,. data on all east-west streets from Brewster to north City limits, taken on a "screen <br />line" drawn just east of the alignment of Hudson Street, <br /> <br />,. data on Alameda de las Pulgas taken north of Edgewood, between Edgewood and <br />Whipple and south of Whipple. <br /> <br />-1- <br /> <br />,-"",'"" """"¡-'-'---r-"" <br />