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. FILE No. 696 04/01 '98 10:31 ID:TOLD DEVELOPMENT 612 420 7574 PAGE 5 APR--01-1998 09:56 PENSHOOF & ASSOC. 612 832 9564 P.05,05 . DECEMBER 24, 1996 ROAD DESIGN MANUAL 5-2 (3 0) It2.09 Driveways and intersecting roadways to the extent practicable within the Driveways should be neared Bs low volume intersections is existing tight-of-way. Where no grading is involved, the their design, Nationally, driveway accidents account for existing °a�D slopes may be cess in place, provided between S and 11 peroses of all urban accidents. It is accident history or other criteria do not indicate corrective therefore warranted to closely owning their design and outs/ is needed. Goading is donned as say work done lacatioa. otttsid+e the shoulder m correct aidrsl and ditches. Driveways that serve major traffic Seeerators such as shopping centers. industrial complexes, large apartment 5.2.09.02 Geometric Design Elements complexes, office parks, eco, require special design considermionr.. The design for these types of developments The eriusia presented are predicated on allowing a cera be complex. The OHfce• of Technical Support. P vebicla in eater or exit a driveway at a minimum of Geometries Unit. and the Office of Traffic Engineering 15 kmlh, Sallies lyres iaditatesd that this yields as acceptable should review the proposed designs. These driveways should amount of vehicle delay on aha main highway+ and eiamMorarbi be treated as street intersections and in some ousts major the =few hazard compared m lower street intersections. entrance For urban design, Standard Plate M7035 shortuld be used 1. Turning Radii-See Table 5-2.09A and standard plates for private driveways that service lav traffic generators, i.e., M9035 and M9000. Ovate homes. duel x ee, small apartment complexes, small 2. Sight Distance-The criteria for intersections also apply business establishments, etc. Tits means that the gatua to driveways(Section 5-2,02). should be continued across these entrances Desissets should use their discretion as to whether the flared entrants 3. 'W Lam • A turn lane may be waimntad at high design or a radius design should be used on a pr jeer. In volume generators. Its design would be as described some lnsrances,a municipality may have a preference. Rohr earlier(Section 5.2.06). Tab5-2.09A and Figure 5.2.09A for driveway radii, 4. Skews - For 2-way ppessudoa, the angle should not 4lc cting standards 'Si entrance design the da the statete by more than 20 deg. {roma right angle. For a municipality should be resolved with the d+miSzKr and 1-way operation where Daly right turns will be made, the municipality. For rural design see Standard ?plate M9000, an angled driveway may be preferable to a perpendicular intersection since it will permit a higher entrance or exit speed. However, this is undesirable 5409.01 Polley When pedestrian or bicycle traffic is appreciable. 5. Width •Excessive or itsaictive driveway widths can li(innssota Rules. Thai; Highway System, Chapters detrimentally affect operations and safety. If the proper 8810.4100 through 8810.9921, describes the general roles curb ream is provided for the design vehicle (Table and regulations governing the design and leeadon of . 5-2.09A),thea a lane width of 3.6 m(I-way)or 7.2 m driveways. This section provides further guidance and design (2-way)will theoretically work without encroachment. detailr which should be used for driveway where , , .. _ . . ., .. 8 °.4 00 through 8810.9921 do not provide this m should be used. If the desirable radii are impractical guidance. To reduce the risk of accident potential. it is to provide, an individual mews=of each driveway imperative that driveway awes be limited to a reasonable must be conducted. member. Therefore, the guidance shown below should be used to determine the frequency of direct-mass driveways: For 1-way operation. the vehicle cannot be allowed to encroach beyond the far edge of pavement or curb.For Principal Arterials-Individual Analysis 2-way moo. the designer must select the tolerable Minor Arterials-One per 60 m of frontage encroachment based on the!Manhood that an entering and exiting vehicle will appear at the same time.These Collector-One per 23 m of frontage , considerations will yield the desirable width for a given Local-No micro! set 6. For new eanstructiodrecansuucsion 6. Corner clesrn ee •Driveways should not be located so or For should eon bedes, 1:6 inslopes close to interscnions or other driveways that they Ipl intersecting road provided on all driveways,field entrances, interfere with the safety and operation of the S Ys General guidelines are presented in eta Rules. For preservation erects, when grading is involved, 1:6 Trunk Highway System. Chapter 8810. It should be iadopes should be considered an driveways, field entrances, noted that dimensions can mood the minimum requirements, but should not exceed the re9ulr d TOTAL P.25