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Home My WebLink AboutE- 5 Staff Report Traffic Controls on Sunset at fifth and Sixth St fif AZUSA CONSENT CALENDAR TO: HONORABLE MAYOR AND CITY COUNCIL MEMBERS FROM: NASSER ABBASZADEH, CITY ENGINEER VIA: RICK COLE, CITY MANAGER / , DATE: APRIL 7, 2003 SUBJECT: TRAFFIC CONTROLS ON SUNSET AT FIFTH AND SIXTH STREETS RECOMMENDATION It is recommended that the City Council approve installation of four-way stop signs on Sunset at Sixth Street. BACKGROUND Staff received a request to study the intersections of Sunset at Fifth and Sixth Streets for potential traffic controls. Current Controls The intersection of Sunset and Sixth is controlled by two-way stops in the east/west directions. The intersection of Sunset and Fifth is a T intersection and there is a stop sign on the south leg. Since the general vicinity of Sunset Avenue is controlled by stop signs (please see the attached vicinity map), staff conducted multi-way stop sign studies at both intersections. Multi-way Stop Signs Multi-way stop signs are posted when there is a right of way conflict. The conflict manifests itself in form of accidents and if the accidents are susceptible to correction by installing stop signs.This type of right of way conflict is characterized by broad side type collisions. /i4' V /o The two main warrants applicable to multi-way stop signs are: 1. An accident problem, where five or more accidents within the past 12 months have occurred and stop signs may prevent such accidents in the future. 2. Traffic volumes, where the numbers of vehicles on all the approaches are nearly equal. Findings Accidents There were no reported accidents in calendar year 2002 at Sunset/Fifth or Sunset/Sixth. Traffic Volumes Twenty-four hour counts were taken on studied streets and show the following(count sheets are attached): On Sunset, 03/04/03, 772 total daily trips On Fifth, 03/12/03, 2,238 total daily trips On Sixth, 03/20/03, 1,153 total daily trips Speeding Staff conducted a speed study on February 20, 2003. The average speed on Sunset was recorded at 29MPH, while the critical speed was 33MPH. Sunset is a 25MPH zone. The recorded speeds are typical on residential streets and no anomalies were detected. Conclusions The accident history on Sunset at Sixth and Fifth does not support multi-way stop signs. The traffic volumes, on the other hand, show that multi-way stop signs are warranted only at the intersection of Sixth and Sunset. Currently, more vehicles have to stop on Sixth, while Sunset traffic, a lower volume, drives through the intersection without controls. A four-way stop will reduce conflicts at this intersection. No additional controls are recommended for Fifth and Sunset. FISCAL IMPACT The cost to add two more signs and legends to the intersection of Sixth and Sunset is$300. Public Works will handle the installation of the signs. Attachments EXISTING TRAFFIC CONTROLS ON SUNSET AVENUE AND VICINITY :.... ...... FOOTHILL BOULEVARD - - LIME ST Li w w w w D D D D D Z Z z Z Z w' w w w w Q` Q Q Q Q I I - SIXTH ' ISTREET1 w_ 0 m z m Li H w z 0 w J 0 O z w Li D z Q 0 • I FIFTH STREET ' I LEGEND STO P CITY OF AZUSA 24 HR TRAFFIC COUNTS Titlel : Sixth Street Site: SIXTH STREET Title2 Date: 03/20/03 Title3 : Interval Day: Thursday Begin AM- PM- 12:00 1 1 3 55 12:15 0 19 12:30 0 17 12:45 0 16 1:00 0 3 17 58 1:15 1 - 10 1:30 1 13 1:45 1 18 2:00 0 2 19 97 2:15 1 18 2:30 1 29 2:45 0 31 3.00 1 1 33 104 3:15 0 17 330 0 31 3:45 0 23 4.00 0 4 16 90 4:15 0 - 27 430 0 29 4:45 4 18 5:00 1 17 26 89 5:15 2 22 5:30 4 21 5:45 10 20 6:00 17 56 17 85 6:15 9 31 6-30 12 • .. 22 6:45 18 15 7:00 13 93 19 49 7:15 22 14 730 28 11 7:45 30 5 8:00 28 94 11 47 8:15 19 14 8:30 20 8 8:45 27 14 9:00 13 47 8 29 9:15 10 8 � 93(1 16 7 6 9:45 8 - 10:00 11 50 6 15 10:15 11 6 1030 15 2 10:45 13 1 11:00 18 59 3 8 11:15 14 3 11:30 12 2 11:45 15 0 Totals 427 726 Peak Hour 7:15 2:45 Volume 108 112 Factor 0.9 0.85 DavTotal 1353 Data File: $ MS0001 Printed: 3/24/2003 Page: 2 CITY OF AZUSA 24 HR TRAFFIC COUNTS Titlel : Fifth Street Site: Fifth Street Title2 : Btwn. Sunset and Orange Date: 03/12/03 Title3 : Interval Day: Wednesday Begin AM- PM- 12:00 3 7 22 120 12:15 2 36 1230 1 38 12:45 1 24 1:00 1 2 22 103 1:15 0 24 1:30 0 31 1:45 1 26 2:00 2 5 40 232 2:15 3 48 230 0 96 2:45 0 48 3:00 2 6 56 197 3:15 1 39 3:30 0 49 3:45 3 53 - 4:00 1 7 44 142 4.15 2 32 430 3 32 4:45 1 34 5:00 6 43 36 140 5:15 8 27 530 9 39 5:45 20 38 6:00 30 114 34 136 6:15 22 24 6:30 32 32 6:45 30 46 7:00 29 140 26 91 7:15 30 20 7:30 51 20 7:45 30 25 8:00 34 250 20 64 8:15 34 14 8:30 62 16 • 8:45 120 14 _ 9:00 32 81 17 78 - 9:15 14 22 9.30 20 _ 19 9:45 15 _ 20 10:00 22 83 14 50 _ e 10:15 17 15 1030 22 9 10:45 22 12 11:00 20 132 6 15 11:15 40 6 11:30 30 2 11:45 42 1 Totals 870 1,368 Peak Hour 8:00 2:15 , Volume 250 248 Factor 0.52 0.65 DavTotal 2.238 Data File: STM$0001 Printed: 3/13/2003 Page: 1 CITY OF AZUSA / . 24 HR TRAFFIC COUNTS Titlel : Btwn.Fifth St. and Sixth St. Site: SUNSET AVE Title2 : Date: 03/04/03 Title3 : Interval Day: Tuesday Begin AM- PM- 12:00 0 0 14 31 12:15 0 7 12:30 0 5 12:45 0 5 1:00 0 0 6 35 1:15 0 10 1:30 0 8 1:45 0 11 2:00 0 1 8 81 2:15 0 20 2:30 1 38 2:45 0 15 3:00 1 2 14 75 3:15 0 30 3:30 0 16 3:45 1 15 4:00 1 5 14 49 4:15 1 18 4:30 2 5 4:45 1 12 5:00 0 7 8 44 5:15 2 14 5:30 2 11 5:45 3 11 6:00 9 31 10 43 6:15 8 14 6:30 8 10 6:45 6 9 7:00 13 106 11 31 7:15 10 3 730 21 8 7:45 62 9 8:00 40 56 6 20 8:15 6 6 8:30 5 6 8:45 5 2 9:00 7 30 5 17 9:15 5 3 9:30 6 5 9:45 12 4 10:00 4 23 2 10 10:15 6 3 1030 8 1 10:45 5 4 11:00 4 19 1 6 11:15 5 2 11:30 7 2 11:45 3 1 Totals 280 442 Peak Hour 7:15 2:30 Volume 133 97 Factor 0.54 0.64 DavTotal 722 Data File: STM$0002 Printed: 3/11/2003 Page: 1 CITY OF AZUSA DEPARTMENT OF COMMUNITY DEVELOPMENT STREET ''' '.--.),--1',L-1.--- ', '`, 'T- Auc6' ' /n'' r / ENGINEERING DIVISION Date 2" "° 3 Day 7-2(c_,;4 `7 r_-- t-) LOCATION ---/'-- S/U S/,‘,-. 7,-/ -3. 7"7. Hours ' 'l :j-1D '6"---1 To // `fO A --, Average Speed 24' 777.-- MPH Weather :�L L' r ._/ "''"` Recorder ''-'' 50 Percentile— Z q MPH Remarks 85 Percentile 27-17 MPH 97 Percentile '7, MPH - 10 Mile Pace to MPH TRAFFIC SPEED STUDY NO. Samples in 10 Mile Pace % of Total . . OU V O75 p N N CJ Cn o` v W CON) �a O N IC') Cn o• VCA) 00 Wso ot N �. t VI t V i O 'If N W Cn o, V DD (Z id O °' N Ca A Cn r