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0i at C(LNtT Adolf TOTAL YA.[[i LIC 1 TD AL <br /> Ric pFp CIVIL E CINEEp •S•I[FS,+` <br /> No:31,2018 �`•t f r <br /> rt ANS MAo AL o t[ 080102 <br /> test sr.7 tr e¢waAw. <br /> a.aw�sreset rAistivfi�i�i: nn a <br /> inns��iis n�se-�tKsr v srwta •o�ta ww✓'e <br /> TABLE 1 TABLE 2 TABLE 3 <br /> TAPER LENGTH CRITERIA AND LONGITUDINAL BUFFER SPACE AND <br /> CHANNELIZING DEVICE SPACING FLAGGER STATION SPACING ADVANCE WARNING SIGN SPACING <br /> MINIMUM TAPER LENGTH * MAXIMUM CHANNE021NG DOWNGRADE Min D *** <br /> FOR WIDTH OF OFFSET 12 FEET (N) DEVICE SPACING * DISTANCE BETWEEN SIGNS* <br /> SPEED X y 2 xx SPEEO yin g NN ROAD TYPE A (N <br /> B C 0 <br /> (S) <br /> TANGENT MERGING SHIFTING SHOULDER ft ft to <br /> TAPER TANGENT CONFLICT URBAN - 25 mph OR LE55 100 100 100 —� <br /> 2L L L/2 L/3 mph ft ff (} {} URBAN-MORE THAN 25 mph TO 40 m h 250 250 250 � <br /> mph ft 1t ft ft ft ft It 20 115 116 120 126 UflBAN-MORE THAN 40 mon 350 ]50 350 <br /> 20 160 BO 40 27 20 40 to 25 755 158 165 173 RURAL 500 500 Sob <br /> 25 250 125 63 42 23 50 12 30 20O 205 EXPRESSWAY /FREEWAY <br /> 70 360 180 90 60 30 215 227 1000 1500 2640 <br /> 60 IS 35 250 257 271 287A <br /> 35 490 245 123 8In <br /> 2 35 TO 1T 40 305 *- o tliatances are approximate,are intended for guidance <br /> 315 J33 359 z <br /> co N 40 610 320 160 107 40 BO 20 purposes only,dnO should be applied with engineering judgment. v <br /> 65�O <br /> 1080 45 360 178 400 427 These distances 1h0u14 be adjusted by the Engineer for field <br /> L31 540 2TD 180 45 90 22 50 425 446 q7q 507 conditions,if necessary,by increasing or decreasing the <br /> 1 00 600 300 200 5D 1DO 255 495 520 553 593 reaemmmended distances. <br /> 20 660 33D 220 50 100 25 60 570 598 633 6861440 720 360 240 SD 1D0 25 65 645 682 728 785 <br /> 80 100 25 TO 730 771 825 891 <br /> 20 280 50 100 25 75 820 866 927 IOD3 <br /> 1800 900 450 300 50 100 IS r <br /> N - Speed is posted speed limit,off-peak 85th-percentile D <br /> N-for other o/facia,Das the <br /> fall <br /> speed prior t0 work starting,or the onticipoted Z <br /> Far BDeed d1 40 man or less,L =W52/60 my toper length formula for L: operating speed in mph <br /> For speed of 45 mph or more,L =WS HN - Longitudinal buffer apace or flogger station spacing <br /> Where:L Toper length in feet 1e1N - Uone on sustained downgrade le. steeper than-7 Percent <br /> tl larger than 1 i <br /> W=Width Of Offset in feet <br /> 5•Posted speed limit,off-peak 85th-percentile <br /> apee0 prior to work starting,or the anticipated <br /> operating speed in mph <br /> NN - Use for toper ofd tangent sections where there ore he pavement markings or where <br /> there is o conflict between existing pavement markings and enanneiizers (CA). <br /> STATE OF CALIFORNIA <br /> DEPARTMENT OF TRANSPORTATION <br /> TRAFFIC CONTROL SYSTEM TABLES <br /> FOR LANE AND RAMP CLOSURES <br /> NO SCALE <br /> T9 <br />