Loading...
HomeMy WebLinkAbout1984-11-27; City Council; N/A; Traffic Safety Issues2-, TRAFFIC SAFETY ISSUES (*Denotes Material Attached) I. Development Standards a) *General Plan Circulation Element b) *Design Standards for Street Classifications c) *Bicycle Routes d) Private vs Public Streets e) *Cul-de-sac Policy f) *Driveway Policy { 9? Established vs. New Areas h) Interim highway needs pending full development. II. Traffic Planning Basics a) Volume/capacity/safety relationships b) The meaning of congestion levels: *'ICA (Intersection Capacity Analysis) or CMA (Critical Movement Analysis) *'LOS (Level of Service) c) The "forgotten" factors of street capacity 'Pedestrians 'Trucks 'Bicycles 'Parking 'Driveways Disabled Vehicles ' 'Grades 'Traffic Mix (local and through) 'Curves d) A few axioms: 'Reduce the number of points of conflict 'Design for adequate sight distance and let people see each other 'Don't install what cannot be enforced. 'Dent underdesign (traffic will rerely be less than predicted). III. Traffic Operations a) Traffic Planning vs. Traffic Operatiorra (Preventative Medicine vs. First Aid) b) Boulevard stops and traffic signals (?hat they du) 'Assign right-of-way j 'Clarify desired vehicle and pedestrian paths lIl 'Concentrate areas of conflict 4 'Balance traffic movement with safety f c) *The application and value of warrants d) Traffic Safety Axioms i '90: of accident experience is due to exposure (the more traffic; the more accidents). '85% of all drivers are reasonable and prudent. 'Fcur-way stops and traffic signals are not safety devices (accidents usually go up, not down). 'People who can see each other do not run into each other. Provide visibility. Give warning if its inadequate. NO ACTION t ' CIRCULATION PLAN Y. T a 11 — 1 •I KEY L LA PRIME ARTERIAL �,�Y aourp0'�Y cos rA MAJOR ARTERIAL r St EST � A� *' SECONDARY ARTERIAL MI j COLLECTOR STREET s•A. f fo •I— WITH FREEWAY INTERCHANGE ONLY. •_— REDUCED RIGHT-OF-WAY POSSIBLE BETWEEN LA COSTA AND OLIVENHAIN. 3— COLLECTOR PROM CARLSBAD BOULEVARD TO SKYLINE WITH 80-FOOT RIGHT-OF-WAY WITH SECONDARY ARTERIAL STANDARDS BETWEEN ADAMS AND JEFFERSON. �+-• POSSIBILITY OF DOWNGRADING TO COLLECTOR BETWEEN LAKESHORE GARDENS MOBILE HOME PARK AND CARLSBAD BOULEVARD IF LOW INTENSITY DEVELOPMENT IN THIS AREA. 2 0 1-- - - AF, L FARADAY O" At PORT PAILOMPI CAMIN pO%NS TTiA f i i C� W h oS V dic W Y. N r . V + i i t i N N W 1 1 « S N � M. Ar •• � O a• W i 1 • i 1 i 1 i i i i i i i NW N R7 N ♦ sw �► p V 6n 17f © 1+/ iT !•f r N O lit s� . ..1 H 1!f _• N N p •hr o 1p . � C O� $ g to in O N A 1� r. j�j p �.r 0- 1 / SIh/1 1 t • N O s� V! W yW1 i0• � � H p N a"n • 40 40tO ~ N W at N iA tow�F pp gLU 10 l b� N o O tJR 0 o om di I�ff C� O < OC = H N ;P-D N �i o INff •o ln� o 0 O W = ` G 0 � C O N W � O •D ` � ` ^ b 1!f t� N � N .� ...� A � 1p ♦ r• h O AA G W �W err W W hl" �S a. N y1 N1W� 1 ~tam pW N taW yN Nh yH1y� �W LAJpMI W att w MA ma CA 'a yWy. 5W W Vw O 00 n °•� 106 CL OE O = J� s: -•000 �►-rh a555 5111 [`«« Nil Nil -111-1 &vYCLE ROUTE) L BICYCLE ROUTES 3- NOTE: This recap, is consistent with the Parks and Recreatic Element. `( CITY OF CARLSBAD ENGINEERING•DEPARTMENT POLICY NUMBER: 1 iSUBJEC T : Sim, Elf-ITr'u�n.r. (CarDL-SAC) DfMOR-07IM—S EFFECTIVE: 9-5-84 APPROVED BY: ?2CNAM A. BEC RWT SUPERSEDES: 12-19-83 City Engineer PURPOSE: To establish a set of conditions under which it is acceptable for a development to have only one entrace while ensuring adequate traffic circulation and fire access. POLICY: Single entry point (cul-de-sac) developments shall be permitted only when the cul-de-sac street is: 1. A 36-foot or 40-foot curb -to -curb residential street and all of the following conditions are met: _ a. Length of street does not exceed 600 feet.* b. Traffic volume does not exceed 500 ADT. c. Number of dwelling units does not exceed 50. *Length may be increased to a maximum of 1200 feet with special permission of the City Engineer. 2. A 40-foot curb -to -curb street and all of the following conditions are met: a. Driveway or street intersections are spaced 150 feet or more apart. b. The length along streets from entrance to most remote point does not exceed one-half mile. c. Traffic volume at entrance does not exceed 1200 ADT. d. Number of dwelling units does not exceed 120. 3. A 4-lane secondary or major arterial and all of the following conditions are met: a. The length along streets from entrance to most remote point does not exceed one mile. b. Traffic volumes at entrance does not exceed 5000 ADT. c. Number of dwelling units does not exceed 500. d. Condition is tetrporary, consisting of a first phase of larger development. A second access must be part of the approved development plans. 4. A 52-foot wide curb -to -curb industrial street and all of the follaoing conditions are met: a. The length of street does not exceed one-half rule. b. Traffic volume at entrance does not exceed 3000 ADT. c. The net buildable lot area served by the street does not exceed 25 acres. WB:bp -4- DRAFT OF 11/13/84 ENGINEERING DEPARTMENT POLICY SUBJECT: Driveway standards for commercial and multi -unit residential projects. PURPOSE: To establish guidelines for the design of access driveways for commercial and multi -unit residential projects. POLICY: Driveways shall be located and designed in accordance with city standards and the following criteria. Potential development of adjacent properties shall be considered when evolving driveway location and design. DEFINITIONS: 1) Driveway Includes those portions of public and private property used to provide access from public rights -of - way to private property and the areas on public and ` s private property used to queue or stack arriving and departing vehicles. Driveways are the points of inter- face between the public/privatd circulation systems. Driveways do not include the traveled way of any street. k 2) Medium Use Driveway For this policy statement includes all driveways with an average daily trip (ADT) load greater than 200 and less than 500. 3) High Use Driveway For this policy statement includes all driveways with an ADT load greater than or equal to 500. f -5- 4 ,r- 4) Low Use Driveway For this policy statement includes all driveways with an ADT load less than or equal to 200. 0 STANDARDS: 1) All driveways shall be designed and constructed so as to preclude the necessity for vehicles entering the driveway to maneuver, or stack within the travelled way or to use the travelled way as a circulation element of the parking area served by the driveway. 2) All driveways having an ADT greater than 20 shall have associated facilities that preclude vehicles backing onto the travelled way. 3) Unless approved deceleration lanes are provided, all driveways shall have a queueing area for in -bound traffic on the property being served. The queueing area shall be no less than 10 feet wide by 25 feet long. Driveway queueing areas shall be provided at the rate of one per 1000 ADT or any fraction thereof using the driveway. 4) No parking spaces, intersections or other decision points shall be located on or adjacent to a driveway queueing area. 0910 7 Driveway spacing ataciig shall conform %t0 the following a) No driveway will be allowed onto prime or major arterial streets unless no other access is available to 3 S i the lot(s) being served. If no other access is available 0 only a right in/out driveway will be allowed. For medium and high use driveways the right in/out driveway I must be located at a point no less than one-half the required intersection spacing from any other intersection or other medium or high use driveway and must be designed with deceleration and acceleration lanes. Medium and high use driveways so allowed shall be made available to adjacent properties through non-exclusive easement or by dedication of a frontage road connecting the driveway and the adjacent properties. b) Low use driveway - per item 15 of Street Design Criteria of the City of Carlsbad Standard Design Criteria. c) Medium and high use driveways shall be spaced in accordance with intersection spacing requirements on Table A, "City of Carlsbad - Street Design Criteria", of the City of Carlsbad Standard Design Criteria. - 7 - f 7 I 9 1 d) Joint use driveways shall be used wherever feasible. The burden of showing joint use driveways to be not feasible is the develpper's. 6) Low use driveways shall be constructed in accordance with standard drawing G-14.1. Medium use driveways shall be constructed in accordance with standard drawing G-17, except that the concrete apron shall be 7 1/2" thick. High use driveways shall be constructed as for a street intersection. 7) Low use driveways shall have a maximum grade of + 15% and i shall have a maximum grade break of 15% without a vertical curve. Medium use driveways shall have a maximum grade of + 12% and shall have a maximum grade break 6% without a vertical curve. 1 High use driveways shall have a maximum grade of + 12% and 1 shall have a maximum grade break of 3% without a vertical t curve. 8) All driveways shall be provided W.th sight distance to l accomodate the street being entered. The design shall be in accordance with the City of Carlsbad Standard Design Criteria. M= 6 9) Except as required by Item 5(a) of this policy accelera- tion and/or deceleration lanes will be required or approved only on a case by case basis. 10) Driveways not otherwise clearly distinguishable from a public street shall be clearly and permanently marked and posted as private. 11) Medians in driveways are acceptable subject to rational design considerations such as lane width, parking restrictions, vehicle turning, curb return radii and other items as may be necessary. 12) Excepting only acceleration/deceleration lane circumstances the angle of intersection of street and driveway shall not vary more than 10 degrees from a right angle. WHB:rlh 11/13/84 !0 .., i A L u G 'v .:( . ti . A R A L Y S. 2 ----------- ---------------------------------------__ Ruh b2f2:4r)/?4 sPAS.Caticn: Tura Input Bvi3tA! i o4cee 40.. TAPE=OA�a-CHES s i 2i: PAL01(A„ AIRPORT ROAD _-set No. _ (AFFROACHES 3 e 4): FASEO BE- t(OSTE C.TY 67 CAKEBAD ., -. CALCULATE :`RGJGCTED LEVEL GC :..^.;'Ja.-.i - .L'L: L y:C :+70'r YZE:4 :C'JEL3111LN1 AND NO iNTERSECTIEN 1i *RJVEMIEOTS tHs-J.-1 ! �e::$ri iou.: 4:00 FM TO 5:00 PH A �Y��.�X##r#X##AiXXKX��.�##:k�XxYXX#�'rXXXX�#fix####TMd.k#X�.#X#X�c#Xxax:� t�z�;.�'i.,►,3.��ii�$;K�x,Xk�.K�.xX�'#XXK�XIi�#�.k:ikxX�.��$4k;�# CALCULATE Fc....IGD VOLUMES (Passenger Cars/Hour) t HOURLY TRUCK LOCAL LEF T/TURN ?ASS, CAR ;':?."vB AFFROACH DIRECTION MOVEMENT PHASE VOLUME (3) SUSI.n, ------ ----- rACTG~ VOILUhE Fir- iiOLtih: ------- 1 EASTBOUND LEFT B2 392 ii,2 0 -------- 1.05 --------- 4C8 --- ,?2 ------ 4^17 (1 THROUGH Al 361 11,2 0 4/A 401 ."r2 43b i ' RIGHT Al -04 11,2 0 N/A 44? .?2 4S8 2 NESTBOUND LEFT B1 87 1162 0' 1105 lag .89 114 ' THROUGH A2 347 11.2 0 N/A 3F6 .39 434 ' RIGHT A2 55 11,2 0 NIA 61, .8? 6? 3 SOUTHBOUND LEFT B4 200 11,2 0 11,05 234 .85 275 ' THROUGH A3 200 11.2 0 N/A 222 .35 252 ' RIGHT A3 615 11.2 0 N/A 684 .85 305 4 NORTHBOUND LEFT B3 620 11.2 0 1.05 724 186 342 ' THROUGH A4 100 1162 0 N/A iil .86 129 ' RIGHT A4 100 11,2 0 N/A ill .86 1.29 j ADJUST VOLUMES FOR TURN MOVEMENTS, PEDESTRIAN ACTIVITY! LANE UTILIZATION] C I LANE WIDTH! OPPOSE FED./ TURN EFFECT. UTIL, WIDTH ADJUST. 40. VOLUME/ APPROACH MOVEMENT PHASE VOLUME HOUR FACTOR VOLUME ADJ. ADJ. VOLUME LANES LANE i LEFT B2 402 < 99 1000 497 1.00 1100 497 1 497 RIGHT + THROUGH Al N/A < 99 1.00 925 1.05 1.00 ?71 2 465 2 LEFT B1 765 < 9? 1.00 1114 11,00 1.00 114 i 114 RIGHT + THROUGH A2 N/A < 99 1.00 502 1005 1.00 527 2 264 3 LEFT B4 200 < 99 1.00 275 1.00 1110 302 1 302 RIGHT + THROUGH A3 N/A < 99 1.00 1066 1105 .90 11008 2 504 4 LEFT B3 815 < 99 1000 842 1.00 1.00 342 i 342 RIGHT + THROUGH A4 N/A < 99 i.00 259 1105 .70 244 2 122 DESIGNATE PROBABLE FHASING & ADJUST FOR OVERLAP: NUMBER OF PHASES: 8 FRGBABLE POSSIBLE ADJ. CRIT, FHASiNs CRIT, VOL, CARRYOVER VOLUME VOLUME B2B1 114 (B1) 497 - 114 = 383 114 (Bl) KAi 383 62) 422 - 383 = 39 383 (B2) AiA2 264 02) 39 OR 264 = 264 419 02) B3B4 302 (B4) 842 - 302 = 540 302 (B4) 53A4 540 03) 540 OR 122 = 540 540 CBS) A3n4 E04 03) 504 OR 122 = 504 504 (0) #XX$######uuls CRITICAL VOLUME SUMMATION: B1 + B2 + A2 + B4 + B3 + A3 = 2262 LEVEL OF SERVICE: .- 10 ---------------------------- ------------------------- Rur::ate;4ll i34 Application: GPERA11ONS I DESIGN Data i:pu: Bs;J.A. _3NER Street No. 1 (APFROAC ES 1 12i: PALOMAR AIRFCR RGAU St:eat No. 2 {AFFRGAC ES 3 3 4i: AVD. ENCIINAS 1 Cation: CITY OF CAV 'BAD rrobleu Stateaent; CALCULATE FRGJLI TED LEVEL 5F c MICE - 3! SlT i1NgE BUILiJJT WITV !INTERSECTION 1Fn:;KVE1E11T3 I31FLEME-NTEI% itesim 'Hour: 4;00 TO 5;00 FM xkXXlc#�X��XiX#:#k#Ra##Xkk�t#tx'kkk###X# �#�x#.Kk�kk##kzi#tk'kkX'tz��kxxk'��+s.kkt.x�'kXiXxKKt,�x�.#K#TxTa��Xa�X#�xxXkXk#k�X##�#X#k' CALCULATE PERIOD "OLUMES (PasseMer Carsinuur); HOURLY TRUCX LOCAL LEFTITURN PASS. CAR 'ERieD APPROACH DIRECTION MOVEMENT PHASE VOLUME ------ (X) ----- cilSi R. ------- FACTOR --------- SOLUt,.E --------- FI�F --- VvL',F,E ------ -------- 1 ----------------- ----- EASTBOUND LEFT 82 127 5.6 0 1.05 141 .85 1.66 ' THROUGH Al 300 5.6 0 N/A 317 .85 373 ' RIGHT Al 15 5.6 0 N/A !6 .85 :? 2 WESTBOUND LEFT Bi 15 5.6 0 11.05 17 .S5 20 ' THROUGH A2 300 5.6 0 N/A 317 .85 373 ` RIGHT A2 78 5.6 0 N/A 82 .85 97 3 SGUTHBOUHD LEFT B4 170 5.6 0 1.00 ISO .85 211 ' THROUGH A3 15 5.6 0 N/A 16 .85 19 ' RIGHT A3 85 5.6 0 N/A 90 .65 106 4 NORTHBOUND LEFT B3 30 5.6 0 1.00 32 .85 37 ' THROUGH A4 30 5.6 0 H/A 32 .85 37 ' RIGHT A4 70 5.6 0 N/A 74 .85 87 ADJUST VOLUMES FOR TURN MGVEMENTSY PEDESTRIAN ACTIVITYP LANE UTILIZATIONS I LANE WIDTH; OPPOSE FED./ TURN EFFECT, UTIL. WIDTH ADJUST. 110, VOLUME/ APPROACH MOVEMENT PHASE VOLUME HOUR FACTOR VOLUME ADJ, ADJ, UGLUME LANES LANE 1 N LEFT-» B2 378 < 99 1.00 166 i.O0 1.00 166 1 166 RIGHT + THRGUGH Al N/A < 99 1.00 391 1.05 1.00 411 2 205 2 LEFT B1 315 < 99 1.00 20 1.00 1.00 20 1 20 RIGHT + THROUGH A2 N/A < 99 1.00 470 1.05 1.00 4?3 2 247 3 LEFT B4 100 < 99 1.00 211 1.05 1.00 222 2 111 RIGHT + THRCUGH A3 NIA < 99 1.00 124 1.05 1.00 1130 2 65 4 LEFT B3 100 < 99 1.00 37 11.00 1.00 37 1 37 RIGHT + THROUGH A4 N/A < 99 1.00 124 1.00 1.00 124 1 !24 DESIGNATE PROBABLE PHASING I ADJUST FOR OVERLAP: NUMBER OF PHASES: 3 PROBABLE POSSIBLE ADJ. CRII. PHASING GRIT. VOL, CARRYOVER VOLUME VOLUME ---------- --------- 22B1 -------------------------- 20 (Bi) 166 - 20 = 146 20 01) B2A1 146 (1.12) 205 - 146 = 5? 146 (B2) AIA2 247 02) 5? OR 247 = 247 247 02) 113"a4 111 (B4; 65 OR ill = ill Ili 04) B3A4 124 (A4) 37 OR 124 = 124 124 (A4) CRITICAL VOLUME SUMMATION;BI + B2 + A2 + B4 + A4 = 648 LEVEL OF SERVICE: A .CAL MJV-c:i-i T AN:1LY313 :de: �XE)iCirA3 --------------------------------------------- RL1, L3'Gf 1Y1 SCl OY App_-;:a:,cn: G;E"aAiiGN3 3 .E3i0i( Data irput h;J.A. LGT.ER EKINAS ..v:s- u: CITY 3F CAr v: e:D 7: vie`. Stat nett: CALCULATE EXISTIN'O LEVEL OF SEtiViCE vas:3 i :Sour: 4:JO TO 5:00 ?H 3K:XK#x$#kzX#ctXlz##Kt#k#fX#zk#kK#kk##X1KKx#X#t##tx%###Xd' nix; toKkX iKt)X#kioulm r; A43 ilIt ti##mK#x'KKtu KKR* CALCULATE PERIOD VOLUMES (Passenger Cars/Hour): HOURLY TRUTIX LO:AL -==T/TUBE! PASS. CAR FER10D APPROACH LIEECTiuN H02i1ENT PHASE -------- --------- -------- ----- VOLUME (2) ------ ----- 'rvoiH"n. ---------------- rACT u"R VOLUME --------- "r'r.: VOLUME 1 EASTBOUND LEFT fit 30 5.6 0 2.00 53 --- .85 ------ 75 ' TFROUGH At 300 516 0 N/A 30 .85 373 RIGHT Al 15 5.6 0 NIA 16 .85 19 t 2 aESTBOUND LEFT B1 15 516 'v 2,00 32 685 37 ' THROUGH A2 300 5.6 0 N/A 317 .85 373 ' RIG -HT A2 20 5.6 0 NIA 21 .85 25 3 SOUTi:BOUND LEFT B4 85 5.6 0 1.00 90 .85 106 ' THROUGH A3 10 5.6 0 NIA 11 .85 12 ' RI'QHT A's 40 5,6 0 N/A 42 .85 50 4 NORTHBOUND LEFT B3 30 5.6 0 1400 32 .85 37 ' THROUGH A4 10 5,6 0 N/A li ,85 12 { RIGHT A4 70 5,6 0 N/A 74 .83 87 ADJUST VOLUMES FOR TURN HOVEMENTS► PEDESTRIAN ACTIVITYr LANE UT:LIZATiONr I LANE UIDTH: OPPOSE PED./ TURN EFFECT, UTIL, WIDTH ADJUST. NO. VOLUME/ ? AFPROACH MOVEMENT PHASE VOLUME HOUR FACTOR VOLUME ADJ. ADJ. VOLUME LANES LANE r---------------- ----- ------ I LEFT B2 320 ---- < 99 ------ 1.00 ------ 75 ----- 1.10 ----- 1.00 ------ 82 ----- .33 ------- 248 RIGHT i THROUGH At N/A < 99 1100 371 1.10 1.00 430 .66 652 2 LEFT Bi 315 < 79 1.00 37 1.10 i,00 41 .33 124 p RIGriT + E iHRGUSH A2 NIA < 99 1.00 398 i,18 1.00 437 .66 663 3 LEFT B4 80 < 99 1.00 106 1.00 1.00 106 1 106 RIGHT i THROUGH A3 N/A < 99 1.00 62 1.00 1.00 62 1 62 4 LEFT B3 50 < 99 1.00 37 i.10 1.10 -is .33 137 RIGHT i THRc0 A4 N/A < 99 1.00 99 1110 1.10 120 .66 1.82 LES16HATE PROBABLE PHASING 3 ADJUST FOR OVERLAP: NUMBER OF FHASES: 2 s FROBABLE POSSIBLE ADJ. CRiT. HASiN: CRIT. VOL. CARRYGVER -------- ---------- ---------------- VOLUME VOLUME ---------- AiB2 OR A2B1 A3B4 OR A4B3 K0$04in*!kK#t##x1c#kYz$#I#kF7#$##00 CRITICAL VOLUME SUMMATIO11*63 02) i 124 (B1) = 787 LEVEL OF SERVICE: Bi 182 iA4) i 137 (B3) = 319 --- 1106 - 12 - 13 LOS (LEVEL OF SERVICE RATINGS) Service Level A: There are no loaded cycles and few are even close to loaded at this service level. No approach phase is fully utilized by traffic and no vehicle waits longer than one red indication. Service Level 0: This service level represents stable operation where an occasional approach phase is fully utilized and a substantial number are opproseh ing full use. Many drivers begin to feel restricted within platoons of vehicles. Service Level C: This level still represents stable operating conditions. Loading is still intermittent but more frequent than at Level B. Occasionally drivers may have to wait through more than one red signal indication, and backups may develop behind turning vehicles. Most drivers feel somewhat restricted, but not objectionably so. Service Level D: This level encompasses a zone of increasing restriction approaching instability at the intersection. Delays to approaching vehicles may be substantial during j short peaks within the peak periods, but enough cycles with lower demand occur to i permit periodic clearance of developing queues, thus preventing excessive backups. Service Level E: Capacity occurs at this service level. It represents the most vehicles that any particular intersection approach can accomodate. Full utilization of every signal cycle is seldom attained. - 13 - / Ll • MAY, 1972 POLICY 140. 2 , PEDESTRIAN. CROrMIAL KS 2.10 Purpose The purpose of a mai:kct3 crosswalk is to inf:orim drivers of a high pedestrian flow or an unusual crossing location, and to guide pedestrians by providing a marked area in which to cross. The purpose of these warrants is to establish minimum criteria for the installation of marked crosswalks so that they may provide the greatest possible i benefit to both diivers and pedestrians. j . G • . j 2.11 Legal Definitions and Right -Of -tray Control f The following excerpts from the California Vehicle Code and the San Diego Municipal Code are perti,nent to these i warrants: • C.V.C. 275. "Crosswalk" is either: ' (a) That portion of: a roadway -included within the prolongation or connection of the boundary lines of ` sidewalk:s at intersect ions where the intersecting � roadways meet at approximately right angles, exccl)t• the prolongation of such lines from an alley across a , street., (b) Any poi:t•i.on of a roadway distinctly indicated for ' pedestrians crossing by lines or other marking.; on the surface. • - 14 PEDESTRIAN C120SSV-,M KS (Cont.) 2-- 1--- Legal Definitions and Right -Of -'-lay Control (Cont.) C.V.C. 21950. lcighL-Of-Way at• crosswalks: (a) The Driver of a vehicle shall yield the right -of -Way to a pedestrian crossing the roadway Withill any mar',:ed croaswallc or :•jithi.n any unmarked crosswal.lc at an i.ntersec'U.i.or., except as otherwise ri:ovided in this chapter. (b) 2:o pedestrian shall suddenly leave a curb or other place of saCety and walk or run into the path of a vehicle which is too close as to constitute an immediate hazard.. C.V.C. 21954. 1'ecicstrians outside crosswalks' pe destrian upon a roadway at any point- other than livery } an within a marked crosswalk, or eld� the nrightnofLt;ay to all at an intersection shall vehicles upon the roadway. C.V.C. 219.55. Crossing between controlled intersections: Between adjacent intersections controlled by traffic control signal devices or by police Of'i'icers, pedestrians shall not cross the roadway at any place except in a Crosswalk. 83.03. Interfering with traffic-: It sh•al.l he unlawful for any person to stand in any road!•ray, other than in a safety zone or in a crosswallc , if such action interferes With the lawful movement: Of traffic. 2.12 General, t • then justtif;ied and properly l,ocatcd, a marked pedestrian crosswalk may achieve the, L•011oe: ing results: .!'Call the driver's attention to a high pedestrian flow o'r an uli!,sual crossilig location. pedestrian the slaf:e,t• croping p<<th. jI. Point 'ouL t'Y C ss LO C. limit pedestrian crossi.11g s to.specific location s. - 15 - 7. l& PEDESTRTnt\ CROSSS•'11I s (Cont. ) 2.12 General (Cont.) unjustified or poorly located marked crosswalks may: A. lhcrezxse accident: frequency by lulling both pedestrians and drivers into a false sense of secur .ty. B. Create general disrespect tor. all traffic control devices,. ' C. Result in unnecessarily high painting and maintenance costs to the City. 2.13 General Policy L'y legal det_i.nit•ion there are three or more unmarked Gross�ralk s at every intersection. The City does not normally install a marked crosswalk across an i.nterss .ction approach where more restrictive traffic control. devices, other than traffic signals, are in use. Such devices include stop signs and yield signs. Hol•rever, a crosswalk may be marked at a controlled intersection if an unmarked crosswalk would not be clearly discernable due to pecirli.ar geometries or other unusual physical conditions. . A marked midbl.ock, crosswalk may 'be installed when warranted on the basis of: sound engineer:ing judgment. The length of the block between intersections should be no less than 1,000 feet. Ther:e must be a reasonable demand by pedestrians to cross within as concentrated area no less than 400 fact from the nearest irrtersect:ion. There must be a high pedestrian volume generator: nearby. 2.14 warrants The following warrants arse based. on a point system evaluation incorporating gap time, pedoustr.ian volumes, vehicle approach ;speed, and general con(liti.ons. Accident his,tory and the invest•igati.ng ongincer. opinion have been subordinated to afford maximum objectivity in determining crosswalk needs. .. '� \_ , PEDE STRIAM CRCSSWAL,KS (Cont. ) 2.15 Point System Gap Time Ii?arrant 14a):imum 10 Point Pedestrian volume Warrant " 5 it Approach Spced Vlar.•r.ant 5 " General Conditions Vlarrant " -5 Total Points •25 2.16 Point Evaluation The minimum warrant for the installation of a marked crosswalk is satisfied. when a location rates 16 or more points, one of: which must be, for pedestrian volumes. i -17-- 1 l y MAY, 1972 WARRANTS t { ! PEDESTRIAN CROSSTIALK'S } f a Gap Time Warrant Point Assignment 'Avc:l:age number ' of yaps per 5- Criterion minute _period Points ' The number of unimpedea 0 -- 0.99 10 vehicle time gaps equal 1 - 1.99 8 ! to or exceeding the re- 2 - 2.99 6 quired pedestrian cross- 3 - 3.99 4 ing time in an average 4 - 4.99 2 five-minute period h or over 0 during the peak vechicle hour. Maximum 10 Computations .(A) Pedestrian Crossing Time = Street ,width _curb to cu7_t> 4..0 feet per second (13) Average Number of Gaps per rive -Minute Period = Total. gap time in seconds _usable • Pedestrian C ossing' `.L me x i 2___ # Provisions (A) The above criterion is based on a one -hour field ,• survey Con,,isting of 12 five-minute sainp.les. s t n • (B) All roadways having a raised median or a painted median (4•-fcet .ini.ni.mum width) -gill be considered as two separate T:oade:ays. (C) See Appendix One for survey methods and warrant field f form. , • ° - 18 - .. .. ..w•+I..•a , w. n..r•w r•. .w .rl• •.. w w)e. .•� •n 1•.�. i..«♦ n.I •w.w t.J.r J•A rr•a•wI{♦.- • «.•�.. t.. .. w.L r• .+•+• ' Pedestrian Volume warrant Point Assi_cinment Pedestrian criterion � Total _ Points The total number of pedestrians 0 - 10 0 crossing the street under study 11 - 30 1 during t•1.,: peal; vehicle hour . 31 -- 60 2 This includes pedestrians in 61 - 90 3 both crosswalks at an 91 - 120 4 ni:ersecti.on Over. 100 5 • i i . Maximum 5 Approach Speed Warrant i Approach Cr•i-erion Speed -Points The vehicular approach speed Under 20 MPH 0 fro-m both directions of 20 or 25 MPII 3 i travel as determined by the 30 or 35 I;PIi 5 investigating engineer 40 or 45 MPII 3 1 through speed study 50 or 55 I'M techniques. 60 or over 0 Maximum 5 General Conditions Warrant General « Criterion Condi•ton, Points Those conditions affecting Values assigned 0 -• 5 the movement of pedestrian according to traffic other than gap engineering time, pode:�trian volumes, judgement. • and vehicular approach speed. Consideration should be given to inter-' . section layout, pedestrian accident history, vehicle turning movom6nts, adjacent groun(ls and 1)uildi•ng s, and pedostr. ian generators • Maximum - 19 - ' � O MAY, 1972 POLICY 1\0. 4' 2=-WAY S`J.'0P C011`!'ROL 4.1 Purpose The purpose of stop signs is to control the right -of --way assign!,lont at an intersection. Stop signs are placed at entrances to desigllate through highways or at any intersection designated by.resolution as a stop intersection. in the latter case, these locations are commonly referred to as Illtcrsect-iO!l Stops. If such a location meets the following warrants, the signs are located on the street carrying the minor volume of etltcring • traffic. properly installed stop s'i.gns facilitate traffic movement and promote traffic safety. 4.2 General in order for an intersection to receive consideration for two-way stop control, certain factual data must be obtained. These include accident records, visibility • conditions, traffic and pedestrian volumes, and unusual conditions (such as proximity of schools, fire stations, etc.) Points are assigned to each of: these warrants. The total possible points is 30. The installation of a two-way stop control is justified with a total, of 18 points. • 4.3 Accident Warrant .` • Three points are assigned for each accident susceptible to ' correction by stop signs during one f••ll year prior to the investigation. Maximum 9 points. 4.4 Visibility 06rr.ant • Where the critical approach speed to the ,intersection IS less than 17 NIM, 1 point •shall be assigned for each MPH under 17 M11'I1♦ Maximum 9 points. r� r -1 Pb 4.5 Volume Warrant A. Major Street: 1 point for. every 100 vehicles per clay In excess of 500. Maximuin 5 points. 'B. Minor Street: 1 point for every 25 vehicles and pedestrians* on minor street during the peak hour. Maximum 4 points. * Pe6.�strians crossing the minor street. 4.6 Unusual Condition Warrant ` Where* unusual conditions exist,sLich as a school, fire station, playground, steep hill, etc., points are assigned on the basis of engineering judgement. Maximum 3 points. i r t1114 : ' • • • • w • i t -21- r { } MhY, 1972 t POLICY NO. 5 9-WAY STOP CONTROL 5.1 Purpose A fully justified, properly installed four-way stop can effectively assign right-of-way, reduce vehicle delay and decrease accidents. Generally, a Lour -way strop is reserved for use at the intersection of two through highways, and only as an interim traffic control measure prior to si.gnalization, 5.2 General The posting of an intersection for four-way stop control should be based on factual data. Included are: Through street volumes, and unusual conditions, such as proximity of schools, fire stations, etc. points are assinged to each of these criteria. The total possible points are 50. The installation of -four --way stop control is justified with a total of 28 points. 5.3 Primary Warrant One of the streets at an intersection must be a through highway before the intersection can be considered for four- way stop control. A. If street is a through highway -0 points B. If both streets are through highways 5 points 5.4 Accident Warrant • Two poirits are assignod for each accident susceptible to correction by four --way stop control during one full year. prior to the investigation. Maximum 20 points. 5.5 Unusual Condition Warrant Where unusual, conditions exist, such as a school, fire station, playground, steep hill, etc., points are assigned on the basis or engineering judgement. A school location in itself, is not sufficient justification for a four-way stop installation. Maximum 5 points. ^•22 - , 4-WAX STOIC CONTROL (Cont.) 5.6 Volume Warrant A. Total entering vehicle volume must equal 2000 `vehicles for the four hi.ghest.hours in average day. B. Minimum side street volume must equal 600 vehicles during same four-hour period. Points shall be assigned in accordance with the following tables. Major Approach Minor Approach i . 4-hour Vol.uizc Point's 4 -hour Volume Points 800 1 0 - 1400 0 600 - ! 1401 - 1700 1 • 801 - 1000 2 4 1701 - 2000 2 1001 - 1200 3 2001 - 2300 3 1201 - 1400 4 2301 - 2600 4 1401 - 1600 5 2601 - 2900 5 1601 - 1800 6 2901 - 3200 4- 1801 - 2000 7 3201 - 3500 3' 2001 - 2200 a 3501 - 3800 2 2201 - 240C 9 3801 - 4100 1 2401 - over "• • 10 4104 - over 0 5.7 Volume Split Warrant , four -%,lay stops operate best where the minor approach volume and the major approach volume are nearly equal.. Points • shall be assigned in accordance with the following table: Major Less Minor Approach Leg Volume Difference Points . 0 -• 300 5 ' 301 - 600 4 601 - 900 • 3 901 -- 1200 2 1201 - 1500 1 • 1501 •- over 0 a -23- SIGNALS AND LIGHTING TRAFFIC MANUAL. April, 1 177 �. Figure 9•1A 7ZAFF11a, 55i'%'7�NAL WARRAii35 CALC DATE DIST CO RTE pM CHK CATE Major St: Critical Approach Speed mph Minor St: _ Critical Approach Speed mph Critical speed of major street traffic ; 40 mph __ ..._ __.__. _ ❑ In built up area of isolated community of < 10,000 pop. _____.._. a RURAL (R) ❑ URBAN (U) WARRANT 1 — Minimum Vehicular Volume MINIMUM REQUIREMENTS 100% SATISFIED Yes ❑ No ❑ (80% SHOWN IN BRACKETS) 80% SATISFIED Yes ❑ No U R U R APPROACH LANES 1 2 or more Hour Both Apprchs. 500 350 600 420 Major Street (4001 (230) (336) Highest Apprc 150 105 J90) 00 140Minor --I- tj Street ' (120) (84) 60) (112) ' NOTE: Heavier of talc turn movement 1.om Major Street in laded when LT -phasing is proposed ❑ WARRANT 2 — Interruption of Continuous Traffic MINIMUM REQUIREMENTS 100% SATISFIED Yes ❑ No ❑ (SOT. SHOWN IN BRACKETS) — 80% SATISFIED Yes ❑ No ❑ U R u I R APPROACH LANES 1 2 or more How both Apprchs. 750 S25 900 630 .._. Major Street (600) (420) (720) (504) Highest Apprch 75 53 100 loo 70 Minor Stfeet' 16W (42) fS0) ' NOTE: Heavier of left turn movement lrom ,Major Street included when LT•phasirg is proposed ❑ WARRANT 3 — Minimum Pedestrian Volume 100% SATISFIED Yes ❑ No ❑ MINIMUM REQUIREMENTS 80% SATISFIED Yes ❑ No ❑ 190 % SHOWN IN BRACKETS) ll I R Both Apprchs. Major Street No Median 600 1490) 420 (336) Volume Paised 4' Median 1000 (000) 700 11560► Ped's On Highest Volume X•%Valk Xing Major Street ISO t12o) 105 (941 IF MIDEILOCK SIGNAL PROPOSED ❑ MIN. REOuIREMENT DISTANCE TO NEAREST EST 48L ISHED CRWLK. FULFILLED 150 Feet N/E ft S/W_—._._ft Yes ❑ No n WARRANT 4 — School Crossings 15-10A Not Applicable ❑ See School Crossings Warrant Sheet ❑ -24- 9 4 E 11 14 TRAFFIC MANUAL SIGNALS AND LIGHTING April, 1977 Figure 9.1B TRAFFIC SIGNAL WARRANTS WARRANT 5 — Progressive Movement Satisfied Yes ❑ No ❑ MINIMUM REQUIREMENTS DISTANCE TO NEAREST SIGNAL FULFILLED > 1000 ft N , S it, E ft, W ft I YES❑ NO ❑ ON ISOLATED ONE WAY ST. OR ST. WITH ONE WAY TRAFFIC SIGNIFICANCE ADJACENT SIGNALS ARE SO FAR APART THAT NECESSARY PLATOONING A SPE D_CONTROL WOULD BE LOST ON 2-WAY ST WHERE ADJACENT SIGNALS 00 NOT PROVIDE NECESSARY PLATOONING A ❑ ❑ SPEED CONTROL. PROPOSED SIGNALS COULD CONSTITUTE A PROGRESSIVE SIGNAL SYSTEM WARRANT 6 — Accident Experience Satisfied Yes ❑ No ❑ REQUIREMENT WARRANT FULFILLEO ONE WARRANT SATISFIED a0 , WARRANT 1-_M_INIM_U_M V_EHIC_ULAR V_OLUM_E_ _ _ _ _ _— _ __ WARRANT _T 2INTERRUPTION Of CONTINUOUS _TFC_ _^_^_ WARRANT 3 - MINIMUM PEDESTRIAN VOLUME - _ YES❑ NO ❑ SIGNAL WILL NOT SERIOUSLY DISRUPT PROGRESSIVE TRAFFIC FLOW ❑ ❑ ADEQUATE TRIAL OF LESS RESTRI.:TIVC REMEDIES HAS FAILED TO REOUCE ACC. FRED. ❑ ❑ ACC WITHIN A 12 MON. PERIOD SUSCEPTIBLE OF CORR. d INVOLVING INJURY OR*>SZOOOAMAGE MINIMUM REQUIREMENT—NUMeF.R OF ACCIDENTS ❑ ❑ S OR MORE • NOTE, Left turn accidents can be included when LT -phasing is proposed WARRANT 7 — Systems Warrant MINIMUM VOLUME RCQUIRErAENr ENTERING VOLUMES - ALL APPROACHES �, FULFILLED .. DURING TYPICAL WEEKDAY PEAK HOUR Boo VEHIHR VEH/11R DURING EACH OF ANY S HRS OF A SATURDAY AND/OR SUNDAY —YES❑ NO ❑ '' VEHIHR CHARACTERISTICS OF MAJOR ROUTES MAJOR ST MINOR ST PART Of NWYSYSTEM SCRVINGAS PR NECTINCIPLE NETWORKFOR THROUGH TFC CONS ARCAS OF PRINCIPLE TRAFFIC GENERATION RURAL OR SUBURBAN HWY OUTSIDE OF, ENTERING. OR TRAVERSING A CITY_ HAS SURFACE STREET FWY OR EXPWAY RAMP TERMINALS .. — 1— — — — — — -- APPEARS AS MAJOR ROUTE ON AN OFFICIAL PLAN — ANY MAJOR ROUTE CHARACTERISTICS MET. BOTH STS. ❑ ❑ WARRANT 8 — Combination of Warrants !Used it no one warrant satisfied 100%) Sat isf led Yes ❑ No ❑ REQUIREMENT WARRANT FULFILLED TWO WARRANTS SATISFIED so-. 1 - MINIMUM VEHICULAR VOLUME YES❑ NO ❑ 2 - INTERRUPTION OF CONTINUOUS TRAFFIC 3 - MINIMUM PEDESTRIAN VOLUME TS-100 The satisfaction of a warrant is rut necessarily justification for signals. Delay, congestion, confusion or other evidence of the need for right of way assignment must be shown. —25- 2(# SIGNALS AND LIGHTING TRAFFIC MANUAL Apri I, 1977 Figure 9.1C TRAFFIC SIGNAL WARRANTS (Based on Estimated Average Daily Traffic — See Note 2) URBAN ..............................RURAL........................ Minimum Requirements EADT 1. Minimum Vehicular Satisfied___ Not Satisfied Vehicles per day on major Vehiclesperdoyonhigher— i street (total of both approaches) volume minor-street approach (one direction only) ' Number of lanes for moving traffic on each approach Urban Rural Urbon Rural Major Street Minor Street 1............. 1................ 8,000 5,600 2,400 1,680 2 or more ........ 1 z ............... 9,600 6,720 2,400 1,680 2 or more ........ 2 or more ........... 9,600 6,720 3,200 2,240 1 .............. 2 or more ........... 8,000 5,600 3,200 2,240 2. Interruption of Continuous Traffic Vehicles per day on major Vehicles per day on higher — street (total of both volume mi not. street approach Satisfied Not Satisfied approaches) (one direction only) Numberof lanes formovingtrafficon each approach I Major Street Minor Street Urban Rural Urban Rural 1.............. 1................ 12,000 8,400 1,200 850 2 or more ........ 1 ................ 14,400 10,080 1,200 850 2 or more ........ 2 or more ........... 14,400 10.080 1,600 1,120 1 . . . ........... 2 or more ........... 12,000 8,400 1,600 1,120 3. Combination Satisfied Not Satisfied 2 Warrants 2 Warrants No one warrant satisfied but following warrants fulfilled 8070 or more...... -- 1 ?, NOTE: 1. Leh turn movements from the major street may be included with minor street volumes if a separate signal phase is to be provided for the left -turn movement. 2. To be used only for NEW INTERSECTIONS or other locations where actual traffic volumes cor:not be counted. TS-10-C —26� 6) a %C, c ■ i t TRAFFIC MANUAL SIGNALS AND LIGHTING April, 1977 Figure 9•ID SCHOOL PROTECTION WARRANTS CALC. DATE 01 ST 0 RTE P. M. CHK. DATE Critical speed of approach traffic '— 40 mph — — — — — — — — — — — — — — — — — — — — — — — ❑ In built up area of isolated community of < 10,000 pop — — — — — — — — — — — — _ _ _ _ _ — a RURAL (R) ❑ URBAN (U) FLASHING YELLOW SCHOOL SIGNALS -SATISFIED YES ❑ NO ❑ (All parts must be satisfied) 11 Minimum Requirements 11 U R PART A Vehicle Volume Each s 2 hourrs 200 140 11 School Age Pedestrian Each of11 40 1 40 Crossing Street 2 hours . Satisfied Yes ❑ No ❑ AND PART B Critical Approach Speed Exceeds 35 mph Satisfied Yes[] No ❑ AND PAc— C Is iearest controlled crossing more than 600 feet away? Sat+stied Yes ❑ No ❑ SCHOOL AREA TRAFFIC SIGNALS SATISFIED Yes ❑ No ❑ (Both parts must be satisfied) Minimum Requirements I U R PART A Ven�cte Volume Each of 2 hours 500 350 Each of 100 70 School Age Pedestrians 2 hours _ 1[ Crossing Street or 5G0 350 a oer day AND PART B Is neatest controlled crossing more than 600 feet away? 27 — Satisfied YeaNo ❑ Satisfied Yes No April, 197 SIGNALS AND LIGHTING - TRAFFIC MANUAL Figure 9.2 DIRECTIONAL TRAFFIC COUNT SHEET NO OF LANES PEDESTRIANS TOTAL PEAK J i1 Q E- O E- Y Q w a INSERT NORTH POINT a Y a w a AM PEAK PM PEAK TOTAL w a ^r- - w a. z AM PEAK Phi PEAK TOTAL �/ Z Q y � zN -�----L ( X X ) W °" J o w ddZ J o FQ a C w R r o J H O I- a >< DIRECTIONAL TRAFFIC COUNT w n. g OIST ___ CO, RTE_ PM A w w INTERSECTION (GIVE NAME) 4. v CITY PEDESTRIANS TOTAL PEAK DAY DATE NO OF LANES HOUR TO HOUR TOTAL VOLUMt AM PEAK PM HOUR VOLUME _ 28 FORM TS•11 01 21 E