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LANE CLOSURE ON A TWO-LANE ROAD <br />(TWO FLAGGER OFF(\NATION) <br />ROAD <br />W20-- f - WORK <br />AHEAD <br />ONE LANE <br />W2n—,A ROAD <br />AHEAD <br />VV20 /A <br />x <br />z� <br />00 <br />cV � <br />X <br />G20-2 <br />48" x 24" <br />(OPTIONAL.) <br />Mir <br />r <br />4F" x 24" <br />ROADNWOR G20-2 <br />i iI ONAL ) <br />0 <br />0 <br />m <br />SIGN SPACING = X <br />FREEWAYS & EXPRESSWAYS <br />55-70 MPH <br />1500'± <br />RURAL HIGHWAYS <br />60-65 MPH <br />800'± <br />RURAL ROADS <br />45-55 MPH <br />500'± <br />RURAL ROADS & URBAN ARTERIALS <br />35-40 MPH <br />350'± <br />RURAL ROADS & URBAN ARTERIALS <br />RESIDENTIAL & BUSINESS DISTRICTS <br />25-30 MPH <br />200'± (2) <br />URBAN STREETS <br />1 25 MPH OR LESS <br />100'± (2) <br />(1) ALL SPACING MAY BE ADJUSTED TO ACCOMMODATE INTERCHANGE <br />RAMPS, AT -GRADE INTERSECTIONS AND DRIVEWAYS. <br />(2) THIS SPACING MAY BE REDUCED IN URBAN AREAS TO FIT <br />ROADWAY CONDITIONS. <br />s • • W20-7A <br />ONE LANE <br />s ROAD -- V f 2 0— 4 <br />AHEAD' <br />_ W20-1 <br />VF <br />W20-7B <br />BE <br />PREPARED <br />TO STOP <br />Oi-, f IONAL IF <br />40 MPH OR LESS <br />THIS PLAN MAY BE MIRRORED FOR <br />OPPOSITE SIDE OF ROADWAY USING <br />SAME SIGNS AND SPACING. <br />YES ❑ NO ❑ INITIAL <br />GENERAL NOTES: <br />1. ALL SIGNS AND SPACING SHALL CONFORM TO THE MUTCD. <br />2. NOTIFY LOCAL EMERGENCY SERVICES OF CLOSURE TIMES AND <br />DATES (OPTIONAL). <br />3. SIGN SPACING MAY BE REDUCED IN URBAN AREAS TO FIT ROAD <br />CONDITIONS. <br />4, PROTECTIVE VEHICLE RECOMMENDED -MAY BE A WORK TRUCK, <br />5. ALL SIGNS MINIMUM 48" X 48", UNLESS OTHERWISE SPECIFIED. <br />6. CHANNELIZATION DEVICES ARE 28" REFLECTIVE CONES. SEE TABLE 1 <br />FOR SPACING DISTANCES. <br />7. ALL SPACING MAY BE ADJUSTED TO ACCOMODATE AT -GRADE <br />INTERSECTIONS AND/OR DRIVEWAYS. <br />BUFFER DATA <br />LONGITUDINAL BUFFER SPACE = B <br />SPEED (MPH) 25 50 35 40 45 50 55 60 65 70 <br />LENGTH (FEET) <br />155 <br />1 200 <br />250 <br />305 <br />'560 <br />1 425 <br />1 495 <br />1 570 <br />1 645 <br />730 <br />TRANSPORTABLE ATTENUATOR ROLL AHEAD DISTANCE = R <br />HOST VEHICLE WEIGHT HOST VEHICLE WEIGHT <br />9,900 TO 22,000 LBS. > 22,000 LBS. <br />< 45 MPH <br />45-55 MPHI <br />> 55 MPH <br />< 45 MPII <br />45-55 MPH <br />> 55 MPH <br />100' 1 <br />123' <br />172' <br />74' <br />100' 1 <br />150' <br />TABLE 1 <br />CHANNELIZATION DEVICE <br />SPACING (FEET) <br />MPH <br />TAPER <br />TANGENT <br />50-65 <br />10 TO 20 <br />80 <br />35-45 <br />10 TO 20 <br />60 <br />25-30 <br />10 TO .20 <br />40 <br />LEGEND: <br />• <br />CHANNELIZING DEVICE <br />FLAGGING STATION <br />PORTABLE SIGN AND SUPPORT <br />®® <br />WORK VEHICLE WITH FLASHING <br />LIGWORK <br />AREA <br />L <br />L <br />