HomeMy WebLinkAboutCC 8 SPEED ZONES 11-07-88DATE: NOVEMB:ER 1, 1988 ~ ..,. -- ,
TO:
WILLIAM HUSTON, CITY MANAGER
FROM: PUBLIC WORKS DEPARTMENT/ENGINEERING DIVISION
SU~EGT: ENGINEERING AND TRAFFIC SURVEY FOR SPEED ZONES ON BRYAN AVENUE,
SYCAMORE AVENUE, AND WILLIAMS STREET
RECOMMENDATION:
It is recommended that the City Council approve the engineering and
traffic survey for speed zoning on Bryan Avenue, Sycamore Avenue, and
Williams Street and direct the City Clerk to file a copy of the survey
with the appropriate authorities for enforcement purposes.
BACKGROUND:
The California Vehicle Code requires that engineering and traffic
surveys for speed zoning be conducted every five years to enable the
· continued use of radar for speed enforcement. The last such survey for
~he subject .streets was done in 1983, so a new survey has been
;nducted so that radar enforcement can continue.
The attached report has been prepared by the City's Consulting Traffic
Engineer, Dennis Barnes of BSI Consultants, Inc. The three-street
segment studied is listed below along with the existing posted speed
limits. No changes in these speed limits are being recommended.
Bryan Avenue, Browning Avenue to Jamboree Road
Sycamore Avenue, Newport Avenue to Redhill Avenue
Williams .Street, McFadden Street to Main Street
45 MPH
35 MPH
35 MPH
Bob Ledendecker -
Director of Public Works/City Engineer
BL:REW:mv
RSn~lld E. VWolf~d.
Engineering S~rvlces Manager
CONSULTANTS, INC.
Consultants to Governmental Agencies
..
September 26, 1988
City of Tustin
Attention Mr. Bob Ledendecker
Director of Public Works
300 Centennial Way
Tustin, California 92680
Engineering and Traffic Survey for Three
Street Segments Within the City of Tustin
_
As requested, engineering and traffic surveys have been
completed for three routes in the City of Tustin.
Therefore, I am pleased to submit this letter-type report
which contains recommendations for posted prima facie speed
limits on the three street segments surveyed.
The California Vehicle Code requires that engineering and
traffic surveys be conducted every five years to enable the
continued use of radar for speed enforcement. These
engineering and traffic surveys include measurements of
prevailing speeds, an analysis of accident records, and a
review of highway, traffic and roadside characteristics
which are not apparent to motorists. However, in accordance
with California Vehicle Code provisions, local streets which
are not included on the City's Federal Aid Urban (FAU)
Select System of Streets are exempt from the survey
requirements.
Since the last engineering and traffic survey for the
subject streets was conducted in 1983, a new survey has been
conducted so that radar enforcement can continue. The
individual surveys for each of the three street segments
involved the following factors:
1. Field radar speed measurements consisting of a total of
100 vehicles for each roadway now striped for four or more
travel lanes and a total of 50 vehicles for each segment
having two marked travel lanes were made. Field tally
sheets included engineering calculations of the average or
mean speed, the 85th percentile or critical speed, and the
10 mile per hour pace speed containing the greatest number
of observations.
1415 East 17th Street · Santa Ana, California 92701 · (714] 558-1952 · FAX [714) 543-7473
City of Tustin
Mr. Bob Ledendecker
-2-
September 26,1988
2. Accident records for each street segment for the last
three years were reviewed and summarized. Accident
frequencies were then compared with studies published by
other agencies to determine if the accident experience is
higher or-lower than other similar roadways.
3. Highway, traffic and roadside characteristics which are
not readily apparent to motorists were determined based upon
a field review of each segment. Characteristics noted
included the number of travel lanes, frequency of
driveways, density of on-street parking, predominate land
use, crosswalks, horizontal and vertical alignment, and
traffic controls.
The previous information was gathered and summarized on a
survey sheet for each street segment. Recommendations for
speed limits based upon the current prevailing conditions
were then developed.
Attached is a summary listing for the three segments which
were surveyed within the City. The listing indicates the
current po~ted speed limit and the recommended posted speed
.,
limit. As noted, no changes are recommended on the three
.three street segments.
In addition to the summary listing, the survey sheets for
each street segment are attached for your files.
Recommended ~ction
It is recommended that this specific Engineering and Traffic
Survey report be forwarded to City Council for their
approval. After approval, the City Clerk should be directed
to file a copy with the appropriate authorities for
enforcement and prosecution purposes.
Sincerely yours,
BSI CONSULTANTS, INC.
Dennis D. Barnes, P.E.
Project Manager
DDB:ddb
Attachments
STREET/LOCATION
EX[STiNG
SPEED
L'IHITS
~RY OF RECOF~ENDATIONS
RECOI~ENDED
SPEED
LIHITS
85th IOMPH
PERCENTILE AVERAGE PACE
SPEED SPEED RANGE
PERCENT
OF
VEHICLES
IN PACE
REASGN
FOR
CHANGE
BRYAN AVENUE
BROUNING AVENUE TO
HYFORD ROAD
HYFORD ROAD TO
JAHBOREE BOULEVARD
SYCAMORE AVENUE
REDH[LL AVENUE TO
NEIJPORT AVENUE
UILLIAHS STREET
HcFADDEN STREET TO
*HAIN STREET
45
NOT POSTED
35
35
45
45
35
35
49.5 44.4 39-49
40.6 36-46
40.0 35.3 32-42
39.2 34.1 31-41 75.7
NO CHANGE
85TH
PERCENTILE
NO CHANGE
NO CHANGE
CITY OF TUSTIN
ENGINEERING AND TRAFFIC SURVEY
FIELD REVIEU FORM
STREET:.BRYA~ .AVNEUE
FIELD REVIEU BY: S. DOUBLEDAY
LOCATION: BETWEEN BROWNING AND MYFORD RD.
CHECKED BY: D. BARNES DATE: .8/3/88
F A C T O"R.'S
A. PREVAILING S~EED DATA
DATE OF SURVEY
LOCATION OF SURVEY
DIRECTION: EASTBOUND
8/3/88
UEST Of PARK CENTER
DIRECTION: WESTBOUND
'85TH PERCENTILE
10 MPH PACE
PERCENT IN PACE
POSTED SPEED LIMIT
B. ACCIDENT HISTORY
8/3/88
EAST OF PARK CENTER
NO. OF MONTHS COVERED
SPEED-RELATED ACCIDENTS
TOTAL ACCIDENTS
49.5 MPH
39-49 MPH
65.2 %
45 MPH
~6 MONTHS
0
6
49.5 MPH
39-49 MPH
65.2 %
45 MPH
ANNUAL ACCIDENT RATE
ACCIOENTS/MIL. VEH. MILES
.,
C. TRAFFIC FAC'TORS
AVERAGE DAILY TRAFFIC
0 ACCIDENTS/YEAR
0 ACCIDENTS/MVM
6060 VEHICLES PER DAY
LANE CONFIGURATION
TRAFFIC CONTROLS
CROSSWALKS
PEDESTRIAN/BICYCLES
TRUCK TRAFFIC
DM-STREET PARKING
2 LANE
YES
YES
YES/YES
FEW
NO
2 LANE
YES
YES
YES/YES
FEW
NO
OTHER (SPECIFY)
D. R~ADWAY FACTORS
LENGTH OF SEGMENT (MILES)
VERTICAL CURVE
HORIZONTAL CURVE
LATERAL VISIBILITY
SURFACE CONDITION
SIDEWALKS/DRIVEWAYS
STREET LIGHTING
OTHER (SPECIFY)
NO STOPPING ANYTIME
.98 gILES
NONE
NONE
GO(X)
YES/NO
YES
RAISED MEDIAN ISLAND
NO STOPPING ANYTIME
NONE
NONE
GOCO
YES/NO
YES
RAISED MEDIAN ISLAND
E. ADJACENT LAND USES RESIDENTIAL CANAL
45 MPH 45 MPH
RECOMMENOED SPEED LIMIT
SPEED LIMIT ~H~NGE?
NO NO
Y!LE: 3RYAN
c I T Y
RADAR
.
OF T U S T I N
SPEED DISTRIBUTION
BRYAN AVFNUE
-- BETt4EEI'..I BI:.'.-'..F:,14NING AVE. & MYFC)RD F,',C',AI:)
EAST & 141:: ::, F B LH.I i ,i [.
DATA RFDUCTI[:)FI:
· '"' " 4'9 5 MPH
85th PEF, CENFILE SPEEr): .
UPPER LIMIT OF 1'0 MPH PAC,'E. 49.C! MPH
LI')I,,,IEI::~ LIMIT F)I:-. 10 PIPH PACE- $'.-.';'.f') MF:'t-.t
P E R C: l:f I',.I"F. I I'..I P A C: E . e," or:'. 2 ,~. °'
· -% -~ .... \ .
F ERL,[:_! I'i" OVEr; PACE ....................................... ,:..-,.z,,. ,_":' ,,.'"'
I"A(.,[:. .1.1 ,':, %
F - I'~(.,I:::DIT UI'-iDEI'~ " "' -: ...... · ........................... ..
o F El_ I.. - ..... 44.4. I"t !:::' H
h F'ERCEhlTII_E (M[.--DIAF.I) c.:.., ..-:: ..,
' . E: ~z L: - ,:~ ....
.,.... C i"l I::: E:.' '''~" -"'
I'~L. Ei'.iTZI_-E SI::" "' ..... ' ............................. ,::,-' F,
>,
' U.ILu
I-
I,L!
0
CITY OF TUSTIN
ENGINEERING AND TRAFFIC SURVEY
FIELD REVIEW FORM
STREET: BRYAN AVENUE
FIELD REVIEU BY: S. DOUBLEDAY
LOCATION: BETWEEN MYFORO ROAD & JAMBOREE BOULEVARD
CHECKEO BY: O.D. BARNES DATE: 10-31-88
FACTORS
A. PREVAILING SPEED DATA
DATE OF SURVEY
LOCATION OF SURVEY
85TH PERCENTILE
10 MPH PACE
PERCENT IN PACE
POSTEO SPEEO LIMIT
B. ACCIDENT HISTORY
NO. OF MONTHS COVERED
SPEED-RELATED ACCIDENTS
TOTAL ACCIDENTS
ANNUAL ACCIOENT RATE
ACCIDENTS/MI]. VEH. MILES
C. TRAFFIC FACTORS
AVERAGE DAILY TRAFFIC
LANE CONFIGURATION
TRAFFIC CONTROLS
CROSSWALKS
PEOESTRIAN/BICYCLES
TRUCK TRAFFIC
ON-STREET PARKING
OTHER (SPECIFIY)
D. ROADWAY FACTORS
LENGTH OF SEGMENT (MILES)
DIRECTION: EASTBOUND
10-31-88
EAST OF MYFORD
46.1MPH
36-46 MPH
66.9 ~
NONE POSTED
0
.00 ACCIDENTS/YEAR
.00 ACCIDENTS/MVM
6000 VEHICLES PER DAY
2 LANES
TRAFFIC SIGNALS AT dAMBOREE ANO MYFORD
YES AT SIGNALS
FEW/NONE
YES
NO STOPPING ANYTIME
.25 MILES
DIRECTION: UESTBOUND
10-31-88
EAST OF MYFORD
46.1MPH
35-45 MPH
66.9 %
NONE POSTED
2 LANE
TRAFFIC SIGNALS AT dAMBOREE AND MYFORD
YES AT SIGNALS
FEW/NONE
YES
NO STOPPING ANYTIME
VERTICAL ~URVE
HORIZONTAL CURVE
LATERAL VISIBILITY
SURFACE CONDITION
SIDEWALKS/DRIVEWAYS
STREET LIGHTING
NONE
NONE
GO00
GOOD
NONE/NONE
YES
NONE
NONE
GOOD
GOOD
NONE/NONE
YES
OTHER (SPECIFY)
E. ADJACENT LAND USES
RECOMMENDED SPEED LIMIT
SPEED LIMIT CHANGE?
FILE: BRYO5
RAISED CENTER MEDIAN
NEW RESIDENTIAL
=============================
45 MPH
YES POST
BLOCK WALL LINES STREET
VACANT FIELD
45 MPH
YES POST
T U S T I N
--~ADA R
S-P E E D
DISTRIBUTION
dTREET.
LF)CAT I ON:
DIRECTION:
BRYAN AVENUE
BETWEEN MYFORD R(')AD AND JAMBOREE BL. VD
EAST AFl[) WESTBC)UNI)
[)ATE OF SURVEY. 10-31--8:=:
PERIC)D 01:= SURVEY: -- 1:05 PM T(:) 2:05 PM
TF)TAL VEHICLES SLIRVEYED: - 260
SURVFY CONDLICTED BY: -' ........... S. DOIJBLEDAY
(MPt.i) FREQUENCY PERCENTAGE :
................ 0
54 2 O.f:: :100.0 :
53 0 0.0 : 99.2 :
52 2 0.8 -99.2 :
51 3 1.2 : 98.5 :
5(3 8 3.1 : 97.J :
49 7 2.7 : 94.2 :
4::3 11 4.,='" - 91.5 :
47 7 ':' 7 : ,:,7.3 -
4,'."_", 1.1 4 '" "" '~
.~. - ,:2,4.~, :
45 15 5 '"" : "" ' .
.,:, ,:,U 4 '
44 '" ':'
,:., .1 74 F-',
4;-~ .L:3 " 6.9 - 66.5 -
42 13. 5.0 : 59.6 :
41 ,_7 10 4 : 54 6 : .
40 19 7.3 : 44.-'- ~''
...~ 19 7 '-' : .36 9
o,=, 17 6.5 ' 29 6 :
37 12 4.6 : ~.o.1 :
36 1S 5.("! ' 18. ~
35 1J 5.0 - 1J.5 :
34 1. (3 3 ':'" '-'.
. ,:, : ,::, 5
33 5 1.9 - 4.~.::, - *
--"'-' 2 0 '::'
o,-_ . : 2 7 :*
J1 4 1.5 ' 1.9 : *
30 1 0.4 : (:!.4 :*
...................................
D A'F A R F D U C. T I 0 FI:
.
L
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4.7
4,5
4.'5.'
44
4. i
40
3 9
34
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"T ")
-~.
30
,:,U .................. 7,D ..... : ...... .L(.i(..) ........
............................... I.'l ............... 2,5 ............. '- ' ' ......
85 t h P E R C E FI'F I L E S F' E E D: .......................... 4 e',. ]. M P H
IJ P P E R L I M I T 0 I:: 10 M P H P A Cl=-.. 4,S. 0 M F' Ft
[_C) WER L. IMIT OF 10 MPt..t F:'ACE: ............ J6.0 MPH
PERC:IENT IN PACE': ..................................... 6,S.9 %
PE RC:EN"F C) VE R PACE: ............................... 19.6 %
'~ '~ "' ,-,.a
IDEF<CENT UFIDER FAL, F:: ............................... 13.5 ''/
' .D I- E.E I..: ...... 40 d, M PH
50 t.h I::'E R CE N T I L. [-: ,, M E I') I A N ) '-'" ........ '~ .
15 t h P E-- R C FN"I' ]: L E S P E E i'): ............................ 35.3 Id P Ft
'REPARED BY:
BERRYMAN & --STEPHENSON,INC-
1415 E 17th ST. SANTA ANA, CA. 92701
PH. 714/558-1952
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CITY OF TUST I N
ENGINEERING AND TRAFFIC SURVEY
FIELD REVIEg FORM
STREET:.SYCAMOREAVENUE
, .
FIELO REVIE~ BY: S. OOUBLEDAY
...-
LOCATION: BETUEEN REDH]LL AVE. AND NEUPORT AVE.
CHECKED BY: Do BARNES DATE: 8/5/88
F'ACTORS
I
A. PREVAILING S~EED DATA
DATE OF SURVEY
LOCATION OF SURVEY
85TH PERCENTILE
10 MPH PACE
PERCENT IN PACE
POSTED SPEED LIMIT
B. ACC]DENT HISTORY
NO. OF MONTHS COVERED
SPEED-RELATED ACCIDENTS
TOTAL ACCIDENTS
ANNUAL ACCIOENT RATE
ACCIDENTS/MIL, VEH. MILES
C. TRAFFIC FACTORS
AVERAGE DAILY TRAFFIC
LANE CONFIGURAT]OM
TRAFFIC CONTROLS
CROSSWALKS
PEDESTRIAN/BICYCLES
TRUCK TRAFFIC
ON-STREET PARKING
OTHER (SPECIFY)
D. R~ADWAY FACTORS
LENGTH OF SEGMENT (MILES)
VERTICAL CURVE
HORIZONTAL CURVE
LATERAL VISIBILITY
SURFACE CONOITION
SIDEWALKS/DRIVEWAYS
STREET LIGHTING
OTHER (SPECIFY)
'DIRECT]ON: EASTBOUND DIRECT]oN: UESTBOUND
8/5/88
BETWEEN CHARLOHA ANO REDHILL
40 MPH
32-42 MPH
78.1%
36 MONTHS
0
21
0 ACCIDENTS/YEAR
0 ACCIDENTS/MVM
9070 VEHICLES PER DAY
1 LANE
YES
YES
YES/YES
FEW
YES
.5 MILES
SLIGHT
NONE
GO00
GOCO
YES/YES
YES
8/5/88
BETWEEN CHARLOIqA ANO REDHILL
40 MPH
32-42 MPH
78.1%
35 MPH
1. LANE
YES
YES
YES/YES
FEW
YES
SLIGHT
NONE
GCX~O
GOCO
YES/YES
YES
E. AOJACENT LAND USES SCHOOL/RESIDENT]AL RESIDENTIAL
RECOMMENDED SPEED L]MIT 35 MPH 35 MPH
SPEED LIMIT CHANGE? NO NO
,
FILE: SYCAMORE
C I T Y O F T U $ T I N
RADAR SPEED DISTRIBUTION
~ .~ATIF) N: .............
DIRECTIOH- -
S Y C A MO R E A V EI',IUI:':
BE"I'I,,,IEEN I:.-~EDt.-tlLL AVE. &
EAST & WE3TE'.,.'OUND
h.I[Z ~.,J !::'(:) R"I" A V E.
DATE (")F ;SURVEY .......... = .................... 8~~'' '-''-'.., ~,::,,'",
· ,::~ U I",, ",/I:::."' "'T" ..................... l [) - 4. 5 A 1"! 'T'i':~....l ]. - :5 (.1 A M
PERIOD O!:..- '"' -
. , , / - . ¢.. ..... ,. ....
i. L..t.. L:.. o ::"; I...I R"7 [":" Y E Ii:" -- .7 .d.
'I"OTA. .... N !.:::.H ,-.
R ,/E ~ L, uI',ILI..;L,I I:=r: "' DF.U ii.?..L. EDAY
SU ", "" ...... ; ' "' .....':' -
D A T A RED UC T I C.~hl:
85t. h PE'RCEN'FiLE SPEED:
UPPER LIMIT OF 10 MPH PACE:
LF:.WER LIMIT OF 10 MPt.-t PACE.
PERL, ENT II',l PAL,[.: .................
PERCEI,.IT OVE-R PACE.
PERF;EI',IT UNDER PACE:
· -- T PEEf).
5Otb F'EROENIiI_E (I'IED.,.AN) S
4 F~. 0 M F'H
42.0 MPH
j ;:_'. F~ H P H
-7 ,.-., .]. o/
1.1
.... l. 0 . ,~:, '"
._,._:,. :S H P H
:l
I IIIIl-I, br=ol4<!, .-:,LF.l l q l l ¼1 ¼1 -i.,Iqllllll IIII
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~. ~ ; ; I f ~ ~ i i t i I ; i i ~ t '
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CITY OF TUST I N
ENGINEERING AND TRAFFIC SURVEY
FIELD REVIEU FORFI
STREET:.WILLIANS STREET
FIELD REVIEW BY: $' DOUBLEDA~
LOCATioN: BETbt~EN McFADDEN STREET AND MAiN STREET
CHECKED BY: D. BARNES DATE: 8/5/88
F'AGTORS
A. PREVAILING SPEED DATA
DATE OF SURVEY
LOCATION OF SURVEY
85TH PERCENTILE
10 MPH PACE
PERCENT IN PACE
POSTED SPEED LIMIT
B. ACCIDENT HISTORY
NO. OF MONTHS COVERED
SPEED-RELATED ACCIDENTS
TOTAL ACCIOENTS
ANNUAL*'ACCIOENT RATE
ACCIDENTS/MIL. VEH. NILES
C. TRAFFIC FACTORS
AVERAGE DALLY TRAFFIC
LANE CONFIGURATION
TRAFFIC CONTROLS
CROSSWALKS
PEOESTRIAN/BICYCLES
TRUCK TRAFFIC
ON-STREET PARKING
OTHER (SPECIFY)
D. R~ADWAY FACTORS
LENGTH OF SEGMENT (NILES)
VERTICAL CURVE
HORIZONTAL CURVE
LATERAL VISIBILITY
SURFACE CONDITION
SIDEWALKS/DRIVEWAYS
STREET LIGHTING
OTHER (SPECIFY)
E. AOJACENT LAND USES
RECOHNENOED SPEED LIMIT
SPEED LIMIT CHANGE?
F[LE: W[LLiAMS
DIRECTION: NORTHBOUND
8/5/88
SCXJTH OF 'LORELEI LN.
39.2 NPH
31-41MPH
75.7 ~
35 MPH
36 MONTHS 0
0 ACCIDENTS/YEAR
0 ACCIDENTS/NVN
8640 VEHICLES PER DAY
DIRECTION: SOUTHBOUND
815188
SOUTH OF LORELEI LN.
39.2 MPH
31-41MPH
75.7 X
35 MPH
I LANE
YES
YES
YES/YES
FEW
YES
1 LANE
YES
YES
YES/YES'
FEW
YES
.55 MILES
NONE
NONE
GOCO
GOUO
YES/YES
YES
NONE
NONE
GOCO
GOGO
YES/YES
YES
I RES!DENT!AL RES!DENT !AL
I==
I 35 MPH 35 MPH
I
I NO NO
I
C I T Y
RADAR
O F T U S ~ I N
S P E E D D I S T R I B U T I _ N
STREE'I".
--_
-~ I %'TI 01',! -
· . ,:-_- C T I ON:
- WILLIAMS. STREET
BETWEEN Mc:FADDEN ST. AND MAiN S'F.
~..~.-
NORTH & ,:m)UTHBF)UND
DATE OF ' .... "" "'
:::,. d I' x,V E Y ......................... ,:, -, x x .-~ ~ x ~ ,:, '"" ,:::, '""
PERI(.')[) F)I..-.. 'SURVEY- 9-00 AM TO 10-S0 AM
TOI"AL VEH]!CI_ES SURVEYED: - 305
c: DOUBLEDAY
SURVF:Y CX'31'IDLICTED BY: .......... ..,-
--.
( MPH ) F-K ........ JEI',IL, F PEI'~C;EI',ITAGE
32
29
2:3
27
26
25
DATA REDUCTIC, N -
85th PERCENTILE SPEEf): -
UPPER CIMIT OF 1(3 MPH PACE:
LOWER LIMIT C)F 10 MPH ?ACE.
PERCENT IN PACE:
PEROENT OVER PAOE:
PERCENT UNDER PACE-
59.2 MPH
41:0 MPH
3i .0 MPH
75.7 %
9.8 %
14.4 %
50th PERCE:hlTIL. E (MEDIAN) SPEED ..... 7;4.1 MPH
15th PERCI.'.-.-.NTIL. E SPI:ZED ........................ 30.1 HPH
PREPARED BY-
r'~RRYIdAN & STEPHENSON,ZNC.
.5 E 17th ST. SANTA ANA, CA. 92701
?i /55s--t 52
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