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a <br />Charles 11onchell <br />July 13, 1981 <br />Page 2 <br />DoC.Mmenting our rationale for the 41 bikeway set back distance <br />f.rom the street (urban road design) and the G' bikeway wiith is <br />fairly easy: <br />our oot off set f ram the curb is our mi �% <br />n'mum becaus: <br />.2 ..F4 <br />1. Two foot lateral clearance to a stationary object (signs, <br />C) <br />tz-Oqef% <br />es,, power poles and mailboxes) is required. <br />X <br />2. Signs for the roadway are placed at a minimum two feet <br />from the curb (as required by the Minnesota Manuel on <br />Uniforr4 Control Dev"I <br />ces). <br />By adding items #1 and Y2 together, the minimum set back distance <br />totals four feet. This distance may already be compromised because <br />the .vidth of the sign is not taken Into account entirely. <br />-10 .0 <br />The advantages to the fou-N foot set back width are* <br />1. It allows space for mailboxes (which are a present featurt-� <br />in this pro -iect), <br />u <br />It allo .- <br />ws F or the open car door, wit'Llout interfering with the <br />2. <br />opearaticn of the bike.iayft <br />It allows for an adequate berms (grass or other landscaping) <br />4, It is dafer for children or ather relatively inexperienced <br />cyclists because of Vie above mentioned points and for fear <br />of dropping o--'L'f the curb. <br />3. Alt'Eiough this project is designed for bicyclists, we <br />recognize the presence of pedestrian traffic V.Ach will be <br />using this) facility as a sialewalk year round. Therefore, <br />an adequate berm is necessary for snow storage. <br />C 0 <br />Zig'it faDt bikewa.-vr width 1��- our MIM- <br />r <br />Mu"11 becausea. <br />1. asic clearane.-e -1-equireiments: Minimu-m aesirRblel <br />lateral shy distance fro,,i a. <br />O, <br />continuous obstruction Os 75 I-S <br />width between bi,.J-.YCl.-_A.5 <br />regardless of direction <br />5 <br />bicycle and pedestrian <br />i d t, h 2,01 <br />lry �or two bicyclx�s <br />Wit-b. t1he--3e dimensions the width nec,.-_AssL-.. <br />or a bicycle and pade3trian -to pass c-.Tes -'r o a minimum cf <br />seven beet and a desirab...a %Yidtl-i of Ss5', <br />B <br />-rJ ikeway s-,..)ecia1i3tS1P now are saying that 4,-,he minimum widths <br />above are not workinc, and tiia'.L only 4[.;he desirable width <br />should be used. 3_a,.oB,.ed on Vne comments we 'have heard in <br />l'rinnesota. a c-rnpromise of eiglit feet _`eet must be well <br />