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.2 <br />. <br />A treelawn width of ten (10) feet was used on the attached drawing. The narrowest tree- <br />lawn in our retail business, office building, etc. districts is the six (6) feet that occurs in <br />some locations on Country Club Blvd. This six feet would then be the worse case. A new <br />curb line has been drawn'on the attached drawing to indicate same. A two-lane main <br />street roadway will result in the approaching vehicles being closer to a driveway than a <br />multi-laned roadway. Two -14 foot lanes will be used to calculate sight distances. <br />ODOT positions approaching main street vehicles at nine feet from the curb to the <br />driver's side of a vehicle coming from the left and two feet from the curb to the pas- <br />senger side of a vehicle coming from the right. <br />Using the above data and the attached calculations, the following table was developed <br />based on the worse case scenario: <br />Sign Setback From <br />Right-of-Way (Feet) <br />Pedestrian Sight I)istance <br />(Sidewalk / Feet) <br />Vehicle Sight Distance <br />(Roadway / Feet) <br />5 <br />8 <br />9 <br />10 <br />To ltight To Left To Right To Left <br />67.8 <br />124.7 86.2 <br />161.4 265.2 <br />487.3 206.7 <br />381.4 <br />181.5 236.5 709.5 559.0 <br />352 462 1375.9 1091.9 <br />The ODOT minimums for 35 and 40 mph are shown below: <br />Vehicle Speed on Main Street Stopping Sight Distance Intersection Sight Distance <br />(mph) (Feet) (Feet) <br />35 225 500 <br />40 275 575 <br />According to the two tables above, at 35 mph, a sign set-back of nine (9) feet would meet <br />the worse case scenario. At 40 mph, ten (10) feet would be needed. <br />In my opinion - to be reasonable, but remain safe - eight (8) feet is recommended. The <br />reason for this recommendation is because: