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Home My WebLink AboutTrans 2015-10-19 Item 2A - Handout Distributed at Meeting - 42nd Avenue South Sight Distance AnalysisSight distance study tur: 5.14Uth/42na, 5.14bt5/42na and 5.148t5/42na The 2011 HHsFl i 0 intersection sight distance recommendations for stop controlled 30mph roadways are z%.' left and 335' right. The following are the findings for the site evaluations for the above intersections: • s.140tf/42"q: EBLT 125', EBRT 225', WBLT 160', WBRT 225' • S.146try/42"6: EBLT 195', EBRT 225', WBLT 125', WBRT iis' ▪ 5.148th/42"d: MEI EBK I /1', WBE 1160', WBRT 142' • Note: removal of select vegetation could improve many of these issues as note in individual photos. I50 ----- ISO clear srglat Lookiriy Left see attached photos and measurement criteria. e rg S y ht Triangle Looking Right Location of Drirver"s Eye {Use 15 feet from edge of dearest through Ian) cable 9-6. Design Inte.secti,n sight Distance -Case B1, Left Turn from Stop Metric u.s.Castomary Design speea (km/h) stopping sight Distance (m) Intersection Sight Distance for Passenger Cars Design Speed (mph) Stopping Intel seMon sight Distance for Passenger Cars Calculated (m) Design (m) Siglit Distance (Tt) Calcnlatea (ft) Design (ft) 20 zu 41.7 45 15 80 1b5.4 170 30 35 62.6 65 10 115 LL0.5 225 40 50 83.4 85 z5 155 275.6 280 50 b5 104.3 105 30 200 330.8 335 60 8s 125.1 130 35 250 385.9 390 /0 105 146.0 150 40 30s 441.0 445 80 130 166.8 1/0 45 360 496.1 500 90 160 187 / 19u 50 425 551.3 555 100 185 208.5 21u 55 495 b05.4 61u llu 220 229.4 230 60 57u b61.s 665 120 250 250.2 255 b5 b45 716.6 720 130 285 271.1 2/5 /0 730 771.8 775 - - - - 75 820 826 9 830 - - - - 80 910 88z.0 g85 Note: In erseciion sight. distance shown is to a stopped passenger car to torn left onto a two-lane highway,wiLh no median and grades 3 percent or less. For other conditions, tris time gap shdoia 6E adjuster] and trle sight distancE recaicolate'a. cable 9-8. Design Intersection sight Distance -Case BL, K;gllt Turn Iron! Stop, aria Case Bs. Crossing Maneuver i4laric u.s. Customary Design Speed (km/h) stopping sight Distance (m) I5 teu 3Ection sight Distance for Passenger Cars Design Speed (mph) stopping sight Distance (ft) Intersection sight Distance for Passenger Cars Calculated (m) Design (m) t.alculated (ft) Design (ft) 20 20 36.1 40 15 80 143.3 145 30 35 54 2 55 20 115 191.1 195 40 su 72 3 /s 25 lss 253.9 240 50 65 90.4 95 30 200 286.7 290 60 85 108 4 110 35 15U 334.4 335 70 105 12b.5 130 40 305 381.1 388 80 13u 144.o 14s 45 360 430.0 430 90 160 162.6 165 50 425 4//.8 480 100 185 180./ 185 55 49s 515 5 530 llu 220 198.8 200 60 570 5733 575 120 250 216.8 220 65 645 621 1 625 130 185 134.9 135 /0 730 668.9 67u - - - - /5 Szu 710 .o 7zu - - - - 80 910 764.4 765 Note' Intersection sight distance shown is fora stopped passenger car to turn .Ignt unto or to zross a t.o- lane.highway wish no median and with grades of 3 percent or less. For other conditions, the time gap shuold be ddjosLed and the distance recalcolaied. Intersection Departure'Sight T1ianglel; EaBtbound 1140th at4Qnd 0 tan I Scott Butes III)/Q015 24 O IN u, % l '^ M %o d Major Ro ad way Width Ivo. oIF Lanes Minor Roadw Wid Li IVo. oIF Lanes Recommended Distance Left Measured Dis lance lelFt Reco amended Distance Right Measured Dis Lance Right 10-1e-2015 I al 5.140th ST ENSTI31DUND a_ LEFT -RIGHT IfUR V5 m c L., 0 p !D Date Major Road way Name Minor Roadw t y Name Direction of ITr avel Pos ted Speed Limit or 85 Xo for M ujor Roadway (Traffic Controls Present Ilan ter section Maneuver 0 tan I Scott Butes III)/Q015 Eastbound 140th at1421' looking nort' View left bloc< I3t 11E4' from on street parking. nMIMiTE1=1'MrI1 TM1:17 41M Intersectbn )eDarture ISight Triangles Wei;tboand 1140th at 412nd l0 N OI 24 DI 290' LC) d M M N N Major Roadway Willth No. olr Lanes Minor Roadwa y Width No. DIF Lanes Recommended Distance Left Measured Distance left Reim amended Dis Lance Right Measured Distance Right o d v t WE61rI31JUND Stop LEFT -RIG TU INS T 0 0 M 'O d N Mayor Roadway Name Minor Roadway Name nl rrt Posted Speed Limit or 85'70 for Major Roadway !Dar 5c Controls Present Intersection Maneuver W 0 Q 0 .r 0 0 1 ILI a) Liu! erl L ▪ TTT"' Leler n ikji *J 0 u , ® 0J Scott I3iates Il0/11W015 iew right iinpiairetl at 225 bIJ tint ciabinet 11 •••.1• M ••. • 1 !if[6�ii7 • r- - i r'idl Intersection DeaartareISiightTri angles EastbDunJ 1415th at42nI N v N 0 01 r -I CO M d N 1 O O z No. of Lanes Recommended Distance Left Measured Distance left bA U U cat 0 U 10-12-2015 I a) ro N 1— t UD N EASTBOUND co Q. 0 LEFT -RIGHT TURNS U 5 czt 0 0 0 0 tn oo O E 0 a � 3 0 2 a sn 4-40 0 U Intersection Maneuver 0 Let licott Bates 10/20115 astbound1146t at 42'133kin: iot ievti le b on -street •arkin: at 11133' • . ' • , • • . • "-V • • , • • = astbo _Ind 11146t at 42n° lapkin! sout iew bloc ked b enc e 13t PI3 LT' '711ii&tif.---- lliimilmitf J . MI 111311M5aliiiismr-» ; + In 11111111.4w-ininew t + .! , , ,,f , ,-. 'ftionswahmwalwr .814 ..,. , ,'.7' ill 111111118WARIFT"' 3111; 2, ' ,_ • 1, s , . s, : • vim mei WasaintscsrA" , uftit-o , ,ti,, (I. 1 viscs=7:...; ,,., et - ' t' ' ' ILAJ CIDI• 7.111P riiii/81111MMBILT mt ' 111111111MMeimimitg-r: in =Mew znimmateu -su Intersection Departure Sight Triangles Westbound 1146th at 4@nd 26 d d d 290' 125' to CO m 175' Major Roadway Width No. of Lanes Minor Roadway Width No. of Lanes Recommended Distance Left Measured Distance left Recommended Distance Right Measured Distance Right 10-12-2015 7 III v co L r•1 i_ N r C `� N WESTBOUND M Stop LEFT -RIGHT TURNS J al 0 Major Roadway Name Minor Roadway Name Direction of Travel Posted Speed Limit or 85% for Major Roadway Traffic Controls Present Intersection Maneuver tIJeLT1 2 .a , cm _-crnLie '- rte- 47, c' 2 m gal cik Scott Bates 10/20115 7171111:78171111FRIMIMAIMIMMIT ii?.w rig I t • oc keg 13t 11 75 • andsca 3i . t,.., ,-, o- o. NI- fet tN.,4.•.. . ,, •:,4-- ‘-4,-'`... -:,•• ,,...: ,,,!Of -..,.:=,qa... • .-:-• 1'.k,4 ,..,0 " 1t...,"t . • f... • 44 '... ' ' . "q..N...t—t ' ' • , .7 • - ' , „ ' :tr, .4 ' '0: ',' ...' , ' ' ''' - ' ' 1" 1 / „ I / . , ,: ,k_. :i' 'I''.';.:',";:f 7- .r.,- ..' ,„ '. ::1,5,--3,°:-•-i--- - 1. : ' - -- Inte -section D apa to -e Sight Triangles Eastbound 11.41Bt' at 4Q nd LO of N rt d CV i rn DI d d M M n Major Roadway Width Al e-1 rt 04 4-r 0 O z Minor Roadway I Width No. of L apes Recommended Distance Left Me asuired Distance left Recommended Distance Right Measured Distance Right O o N al n 1 a m N al. to i. d tri EAIiTBOUND �M Bto LEFT- IIGHT TURNIi Date Major Roadway Name Minor Roadway Name Direction DIF Travel Posted Speed Limit or 815% IFor Major Road way Traffic Controls Present Intersection Maneuver IiCD tt Bi3 tis ILI)/QDIII C] C 4A C cn in C N CO4-1 r 00 st i n el N CO w iew e 3 I)1 e a t 11115 3 n 6i:ain: a stbo .I id 1148" at 42n' I OD kin! sout iew ri:ht atm kelt at 72 b Iia ilisca' i n: N d N d 290' I b VD % -I ID M CQ 14E' I Major Roadway Width No. of Lanes Minor Roadway Width No. of Lanes Recommended Distance Left Measured IDistance left Recommended IDistance Right ___1 10-12-2015 EU 13 N N t +o `i •N WESTBOUND _ M Stop LEFT -RIGHT TURNS a) Et IQ 1 Major Roadway Name 1 Minor Roadway Name Direction of Travel Posted Speed Limit or 85% for Major Roadway 1 Traffic Controls Present Intersection Maneuver ea lee Ff7etri W63 E 121 ei o el a1 T oat 8 J . c cri 215 1 sit Scutt 13i3tes IID/2I)I1.5 C- 4 -0s- 0 0 tip C 0 0 Oh rs c t en N m St v 0 13 4-.1c m t >- 00 VF c -I T D n 0 ^N ,OD W 3 estbound 148' at 1421 Iooki is sout iew lett bloc ked at l60 b la nI sic a )i ig ale is i✓e ii_ e )iar e i i riwiewiay on or_casio is