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Au�C ust 1, 2007 TRAFFIC ENGINEERING MANUAL <br />E. Typical gravel roads w heTe speed Ifti tis m not necessmy <br />a. A gravel road that would not be zoned even if it was paved. (Many requests originate from dust control <br />problems. Paving, not a speed limit, is the correct solution.) <br />b. A DEAD END road without continuous traffic flow. <br />c_ Gam. ~el? mada: diat do. riot tprovi& a co ion (at bath ends); betwem arterial- rua& or mayor traftim <br />gene===s <br />d. Rural or urban non - collector type roads that serve scattered local residents only. <br />e. E'r'ravet rosins that ]htaNc we practical enforcement poten-dat. Or4iarr afthe request should be deser rd so; <br />that urn*e prob ems can be iso[ d amd solNed b-y enforcement rater than a regulatory speed firm being <br />used as a net to catch one violator. <br />Typical gravel roads where spy' limits maN be efiei' are: <br />a. When there is a connecting section of gravel road that is between two paved roads, that serves to provide <br />a continuous roadway. If the paved sections have speed limits, then a safe speed limit should be considered <br />for the gravel section. <br />b. When the gravel roadway meets or substantially meets urban district criteria (MS 169.01 subd.59), and the <br />housing and roadway are predominantly used by seasonal tourists unfamiliar with the road, the posting of <br />a nfe speed will aid the motumf in leis sebeaiiou aaf speed, to an gate aline meadd and. the vot:erntiall 11az1176 of ' <br />All gravel road speed limit authorizations will have a contingency typed on each authorization. The <br />contingency will void the speed limit authorization in the event that the gravel road is paved or reconstructed with <br />new aft_mrment or grade.. <br />It should be stressed and communicated to local authorities, that it is the local authorities' judgement and decision <br />making power as to whether a resolution should be pursued. Two sections of statute that reference this decision <br />making atlrility of the loaali authority are NIS 1160, 13- which in pwti states. "_ ... may ix� other sgety devkes as <br />they thee, necessan ": and MS 169.14- subd. 5. which, in cart states- "W en local authorities believe _ . _" This <br />language allows the local authority to decide if a speed limit investigation is really necessary and if not, then they <br />are not bound by statute to pass a resolution requesting one. Mn/DOT guidelines should be freely conveyed to them <br />so- that they are better able to make the right decisio,tr in requesting insestications.. <br />13 -7.00 REFERENCES <br />1. V9Ft.7r Minnesota Ruies <br />2. Manual on Uniform Traffic Control Devices <br />3_ AASl CTO - Geometde Design of Highways and Streefis. 19 <br />4. Transportation and Traffic Engineering Handbook <br />E19 <br />41 <br />