RPVCCA_SR_2011_03_15_07_Four-Way_Stop_Controls_At_Intersection_Of_Ambergate_Drive_And_Brookford_DriveMEMORANDUM
TO:
FROM:
DATE:
SUBJECT:
HONORABLE MAYOR AND MEMBERS OF CITY COUNCIL
RAY HOLLAND,DIRECTOR OF PUBLIC WORKS 'it.-f
MARCH 15,2011
ESTABLISH FOUR-WAY STOP CONTROLS AT THE
INTERSECTION OF AMBERGATE DRIVE AND BROOKFORD
DRIVE
REVIEWED:CAROLYN LEHR,CITY MANAGER ~P<I't,.,eJ#'-
Staff Coordinator:Nicole Jules,Senior Engineer 'i'\~
RECOMMENDATIONS:
1.Establish four-way stop controls and associated pavement markings at the intersection
of Ambergate Drive and Brookford Drive.
2.Adopt Resolution No 2011 -,A Resolution of the City Council of the City of Rancho
Palos Verdes establishing four-way stop controls at the intersection of Ambergate
Drive and Brookford Drive.
BACKGROUND
In November 2009,the City received a request from Mr.Scott Burack requesting a
posted "STOP"sign to be installed for both directions of Ambergate Drive at Brookford
Drive.Mr.Burack sent an email correspondence to staff indicating the reasons for the
request.Subsequent to receiving Mr.Burack's request,at the recommendation of the
Traffic Safety Commission,staff investigated the traffic history for this location and
found that previous studies and actions had been conducted in the past consistent with
the City's Neighborhood Traffic Calming Manual.Table 1 summarizes the previous
actions taken by the Public Works Department.
Table 1 -Summary of Actions Taken
December 2003
September 2005
Increase enforcement
October 2006 Reduce speeding on Ambergate Drive Modified striping and
Installed signs
7-1
Ambergate Drive at Brookfood Drive Stop Controls
March 15,2011
Page 2
The City's consulting Traffic Engineer,Willdan,conducted an all-way stop analysis for
the location and the results are included in the discussion below.A copy of Willdans'
study is included as an attachment to this report.
DISCUSSION
Ambergate Drive and Brookford Drive are two-lane,36-foot wide local roadways that
qualify for the prima facie 25 mph residential speed limit.Fronting development is single
family residential.There is curb and gutter on both sides ofthe roadways,with sidewalk on
both sides for most of their length.
The City has a stop sign policy that outlines the requirements and guidelines for installation
of a stop sign.A traffic engineering study has been completed that evaluates the Federal
mandated warrants to justify installation of a stop sign.
Based on the analysis,a stop sign on Ambergate Drive is not currently warranted.The
analysis takes into account vehicular volumes,sight distance and the number of collisions.
The number of collisions is provided by the Sheriff's department and is based on reported
collisions (cases where the party's involved chose to file a report and whether the
responding officer chose to write the report).In this case,there was only one reported
collision in the past two years.
At the two public hearings held by the TSC,September 13,2010 and October 25,2010,
members of the community testified that this location has been the subject of many more
collisions than were reported.Photos and copies of insurance documents were presented
as proof that past collisions have occurred that were not reported nor accounted for in the
analysis.
Based on public testimony and sheriff's department input,the TSC concluded that the
results of the study could have resulted in a stop sign being warranted for this location due
to a large number of unreported collisions and that a stop sign should be installed.Staff
concurs with this conclusion.Additionally,the City's consulting Traffic Engineer supports
the recommendation as well.
At the conclusion of the October 25,2010 TSC meeting,staff took the following steps to
improve traffic conditions along Ambergate Drive near the intersection of Brookford Drive:
•Restriped Ambergate Drive to narrow the travel lanes from 18'to 12'with a 6'curb-
parking lane.
•Installed 25 mph signs at periodic intervals along Ambergate Drive
•Stenciled 25 mph pavement legends adjacent to the 25 mph signs for increased
visibility and speed limit awareness.
•Trimmed back overgrown trees to improve visibility
The above improvements were completed during the week of January 17,2011.With the
addition of four-way stop controls at the intersection of Ambergate Drive and Brookford
Drive,traffic conditions along Ambergate Drive will improve.
7-2
Ambergate Drive at Brookfood Drive Stop Controls
March 15,2011
Page 3
Resolution No.2011-xxx is included as an attachment to this staff report that establishes
the four-way stop controls at the intersection of Ambergate Drive and Brookford Drive.
CONCLUSION
Adopting staff's recommendations will establish four-way stop controls at the intersection of
Ambergate Drive and Brookford Drive.
FISCAL IMPACT
The cost to implement staff's recommended actions is approximately $600.Funding for
the proposed improvements is included in the Traffic Management Program of the FY
10-11 budget.
Attachments:Resolution No.2011-xxx
Willdan's All-way stop analysis
Correspondence related to the All-way stop request
7-3
RESOLUTION NO.2011-_
A RESOLUTION OF THE CITY COUNCIL OF THE CITY
OF RANCHO PALOS VERDES ESTABLISHING ALL-WAY
STOP CONTROLS AT THE INTERSECTION OF
AMBERGATE DRIVE AND BROOKFORD DRIVE
THE CITY COUNCIL OF THE CITY OF RANCHO PALOS VERDES DOES
HEREBY FIND,ORDER AND RESOLVE AS FOLLOWS:
WHEREAS,Section 21351 of the California Vehicle Code authorizes the City to
place and maintain,or cause to be placed and maintained,such appropriate signs,
signals or other traffic control devices as may be necessary properly to indicate and
carry out the provisions of the Vehicle Code or local traffic ordinances or to warn or
guide traffic;and
WHEREAS,formal police reports of accidents did not support the warrant for an
all-way stop at this intersection,that the neighbors presented other evidence
demonstrating that 6 additional collisions have occurred at this intersection during the
last 3 years,which demonstrates that the intersection does comply with the warrant
requirement to establish three way stop controls,and that the Traffic Engineer
recommends the installation of the three-way stop controls;and
NOW,THEREFORE,IN ACCORDANCE WITH SECTION 10.04.010 OF THE
RANCHO PALOS VERDES MUNICIPAL CODE,THE CITY COUNCIL DOES HEREBY
RESOLVE AND ORDER AS FOLLOWS;
Section 1.All-way stop controls are hereby established at the intersection of
Ambergate Drive and Brookford Drive.
Section 2.The City Clerk is hereby ordered to file certified copies of this
Resolution with the Los Angeles County Sheriff's office.
Section 3.The all-way stop controls established in Section 1 of this Resolution
shall become effective upon posting of the appropriate signs and markings.
Section 4.The City Council of the City of Rancho Palos Verdes does hereby
authorize and direct the City Manager to cause signage to be erected indicating where
the turning restrictions are established.
PASSED,APPROVED and ADOPTED this __day of 2011.
1228671-1
7-4
THOMAS LONG,Mayor
ATTEST:
CARLA MORREALE,City Clerk
State of California )
County of Los Angeles )ss
City of Rancho Palos Verdes )
I,Carla Morreale,City Clerk of the City of Rancho Palos Verdes,hereby
certify that the above Resolution No.2011-_,was duly and regularly passed and
adopted by the said City Council at a regular meeting thereof held on ,2011.
City Clerk
1228671-1
7-5
extending
your
reach
October 11,2010
Ms.Nicole Jules
Senior Engineer
Department of Public Works
City of Rancho Palos Verdes
30940 Hawthorne Boulevard
Rancho Palos Verdes,CA 90275
Subject:Updated All-Way Stop Study for the Intersection of Ambergate Drive and
Brookford Drive
Dear Ms.Jules:
Willdan Engineering has updated the.traffic engineering study to determine if all-way stop
controls should be installed at the three-legged intersection of Ambergate Drive and Brookford
Drive.Since there was some question as to whether residential construction activities affected
the traffic counts used in the original September 7,2010 study,the traffic count data was
collected again.The recount was coordinated with City staff to ensure that no construction
activities affected the data collection.The all-way stop analysis included in this updated report
is based on the new traffic count data collected on September 23,2010.It should be noted that
in both cases,the traffic data was collected on a Thursday.
Ambergate Drive is a two-lane north-south residential street.Brookford Drive isa two-lane east-
west residential street,with a stop sign at Ambergate Drive.Brookford Drive tees into
Ambergate Drive from the west.The updated all-way stop study indicates that the study
intersection does not meet the minimum requirements of the City's policy for installing all-way
stop controls.
The traffic study was based on the City's policy for installing an all-way stop at the intersection
of two local streets.Twenty-four hour daily traffic counts were collected for each leg of the
intersection and a spot speed survey was conducted on Ambergate Drive north of Brookford
Drive.The updated traffic count data and spot speed survey are attached.It should be noted
that the 24-hour total entering volume from the newer traffic count is somewhat lower than the
24-hour total entering volume from the original traffic count (2,230 vehicles per day versus 2,280
vehicles per day).Since the eight highest hours and their traffic volumes are also different,the
all-way stop analysis was redone using the updated traffic data (traffic count summaries for the
original and recounted data are attached).
The updated traffic counts show that the intersection still does not meet a key requirement for
installing an all-way stop:The daily traffic volumes on the intersecting streets must be as close
to equal as possible.According to the City's policy,three-legged intersections should have no .
less than a 70/30 split,whereas the updated split for the study intersection is 73/27,which is
greater than the original split of 72/28,with both just below the minimum split.The intersection
does not meet traffic signal warrants since the traffic volume on Brookford Drive is too low.Nor
does the intersection meet the Volume Warrant for Local Streets,which requires a minimum
Engineering I Geotechnical I Environmental I Financial I Homeland Security
562.908.6200 I 800.499.4484 I fax:562.695.2120 I 13191 Crossroads Parkway North,Suite 405,Industry,CA 91746-3443 I www.willdan.com
7-6
Updated Stop Study,Ambergate/Brookford Drives
City of Rancho Palos Verdes
October 11,2010
Page 2
total entering volume of 180 vehicles per hour for the eight highest hours or a minimum entering
volume of 72 vehicles per hour (vph)on the minor street for the eight highest hours.The study
intersection was somewhat lower than the minimum total volume,with an updated average of
173 vph (originally 177 vph).The entering volume on the minor street was an average of 46
vph (originally 44 vph),both well below the required traffic volume.Collision data was not
available for the accident warrant.
The spot speed survey for Ambergate Drive north of Brookford Drive showed that the 85th
percentile speed is 35 miles per hour in both the northbound and southbound directions.
Available sight distance was estimated based on the 85th percentile speed and on an
approximate sight distance triangle using an aerial map.There appears to be adequate
available sight distance in both directions.If cars are frequently parked on the west side of
Ambergate Drive between Brookfield Drive and the first driveway north or south of Brookford
Drive,however,parking removal should be considered to improve sight distance.The All-Way
Stop Warrant worksheet is attached.
We appreciate this opportunity to serve the City of Rancho Palos Verdes.If you have any
questions,please contact me at (714)978-8225 or ruthsmith@willdan.com ..
Very truly yours,
WILLDAN ENGINEERING
Ruth Smith,TE,PTP
Project Manager
Attachments
7-7
City of Rancho Palos Verdes
ALL-WAY STOP WARRANT
DATE:10/1/2010
BY:R.Smith
Ambergate Drive &Brookford Drive
85th %tile Speed:35 mph
85th %tile Speed:---
INTERSECTION:-----------~-------------------MAJOR STREET:Ambergate Drive (NS)
MINOR STREET:Brookford Drive (EW)
REQUIRED CONDITIONIWARRANT
The volume of traffic on the intersecting roads is approximately equal (no less than a
60/40 split for a 4-legged intesection or a 70/30 split for a 3-legged intersection).Split =
1.Where a traffic signal is justified and the need for traffic control at the intersection is
urgent,all-way stop control can be used as an interim device while arrangements
are being made to install a traffic signal.
2.Available sight distance is less than that dictated by the prevailing traffic speed
(sight distance triangle)for pedestrians and vehicles crossing the higher volume
street.
3.Five or more reported accidents of a type susceptible to correction by the
installation of an all-way stop have occurred within a 12-month period.Types of
accidents susceptible to correction include broadside and left-turn collisions.
4.Volume Warrant -Local Streets
a.Total vehicular volume entering the intersection from all approaches must
average 180 vehicles per hour for any 8 hours of an average day;and
b.The vehicular volume entering the intersection from the minor street for the same
8 hours must average at least 72 vehicles per hour.
5.Volume Warrant -Arterial Streets
a.Total vehicular volume entering the intersection from all approaches must
average 500 vehicles per hour for any 8 hours of an average day;and
b.The combined vehicular and pedestrian volume from the minor street or highway
must average at least 200 units per hour for the same 8 hours with an average
delay to minor street vehicular traffic of at least 30 seconds per vehicle during the
peak hour.
c.When the 85th percentile approach speed of the major street exceeds 40 mph,
the minimum vehicular warrant is 70%of the of the above requirements.
6.Any unusual phyisical or geometric conditions that cannot be effectively addressed
by less restrictive methods.If yes,attach description.
CONDITION
SATISFIED?
YES NO
~~X I
73/27
X
I X I
X
x
x
x
X
All-Way Stop Warrant Satisfied?
EIGHT HIGHEST HOURSNOLUMES AVE.VOL.
TIME:8-9 am 3-4 pm 7-8 am 6-7 pm 5-6 pm 4-5 pm 2-3 pm 9-10 am
TOTAL VOLUME:231 211 182 174 171 145 138 128 173
MINOR VOLUME:50 52 66 50 32 41 41 32 46
7-8
TRAFFIC COUNT SUMMARY
(Recount)
Date:9/23/2010Ambergate(NS)&Brookford (EW)Location:__---.;.~--..;..~-'-----~---I._-
ENTERING VOLUMES 8 HIGHEST
HOUR NB SB EB WB TOTAL HOURS
12-1 AM 0 4 1 0 5
1-2 1 2 0 0 3
2-3 0 0 0 0 0
3-4 0 2 4 0 6
4-5 1 1 2 0
4
5-6 4 1 14 0 19
6-7 39 10 47 0 96
7-8 77 .39 0
8-9 112 69 0
9-10 52 38 0
10-11 51 29 44 0 124
11-12 26 48 38 0 112
12-1 PM 34 59 26 0 119
1-2 5 44 19 0 68
2-3 41 56 0
3-4 61 98 0
4-5 35 69 0
5-6 45 94 0
6-7 29 95 0
7-8 20 71 23 0 114
8-9 19 57 11 0 87
9-10 17 31 3 0 51
10-11 5 21 4 0 30
11-12 4 7 1 0 12
678 945 607 0 2,230
NS/EW Split =73 27
7-9
TRAFFIC COUNT SUMMARY
(Original)
Ambergate (NS)&Brookford (EW)Date:9/2/2010
ENTERING VOLUMES 8 HIGHES
HOUR NB SB EB TOTAL HOURS
12-1 AM 1 8 1 10
1-2 1 1 0 2
2-3 1 1 0 2
3-4 0 2 0 2
4-5 1 0 4 5
5-6 8 3 19 30
6-7 48 3 43 94
7-8 72 .42
8-9 117 66
9-10 43 25 110
10-11 45 36 117
11-12 32 34 99
12-1 PM 35 48 117
1-2 20 43 92
2-3 47 71
3-4 75 87
4-5 44 94
5-6 40 87
6-7 33 86
7-8 23 80
8-9 16 52 86
9-10 3 41 52
10-11 3 19 30
11-12 1 13 18
709 942 2,280
NS/EW Split =72 28
7-10
Transportation Studies,Inc.
2680 Walnut Avenue,Ste C
Tustin,CA.92780
Location :AMBERGATEDRIVE Site:RPV
Segment :S/O BROOKFORD DRIVE Date:09/23110
Client :WILLDAN
IntelVal NB SB COOlbined Day:Thursday
Begin AM PM AM PM AM PM
12:00 0 0 15 34 0 3 14 54 0 3 29 88
12:15 0 12 1 13 1 25
12:30 0 5 0 15 0 20
p:45 0 2 2 12 2 14
01:00 0 2 5 1 2 12 41 1 3 14 46
01:15 0 0 0 11 0 11
01:30 0 1 0 8 0 9
01:45 1 2 1 10 2 12
02:00 0 0 2 41 0 0 16 56 0 0 18 97
02:15 0 16 0 8 0 24
02:30 0 12 0 16 0 28
02:45 0 11 0 16 0 27
03:00 0 0 24 61 0 4 26 86 0 4 50 147
03:15 0 17 2 22 2 39
03:30 0 14 0 16 0 30
03:45 0 6 2 22 2 28
04:00 0 10 35 1 2 15 79 1 3 25 114
04:15 0 5 0 14 0 19
04:30 0 9 0 32 0 41
04:45 1 11 1 18 2 29
05:00 2 4 18 45 6 12 10 78 8 16 28 123
05:15 0 6 0 24 0 30
05:30 1 5 4 16 5 21
05:45 1 16 2 28 3 44
06:00 2 39 6 29 2 10 29 77 4 49 35 106
06:15 2 5 4 20 6 25
06:30 20 10 4 12 24 22
06:45 15 8 0 16 15 24
07:00 16 77 7 20 4 24 24 62 20 101 31 82
07:15 22 5 8 11 30 16
07:30 22 3 6 16 28 19
07:45 17 5 6 11 23 16
08:00 32 112 6 19 6 49 9 45 38 161 15 64
08:15 13 5 8 13 21 18
08:30 31 3 30 10 61 13
08:45 36 5 5 13 41 18
09:00 20 52 2 17 5 29 6 21 25 81 8 38
09:15 15 6 8 5 23 11
09:30 12 5 7 6 19 11
09:45 5 4 9 4 14 8
10:00 10 51 2 5 18 35 6 20 28 86 8 25
10:15 15 0 4 8 19 8
10:30 16 1 4 4 20 5
10:45 10 2 9 2 19 4
11:00 3 26 1 4 8 41 1 4 11 67 2 8
11:15 14 0 12 2 26 2
11:30 5 2 4 0 9 2
11:45 4 1 17 1 21 2
Totals 363 315 211 623 574 938
Split%63.2 33.6 36.8 66.4
Day Totals 678 834 1,512
Day Splits 44.8 55.2
Peak Hour 08:00 02:45 07:45 05:15 08:00 03:00
Volume 112 66 50 97 161 147
Factor 0.78 0.69 0.42 0.84 0.66 0.74
*Data File :D1009147 7-11
Transportation Studies,Inc.
2680 Walnut Avenue,Ste C
Tustin,CA.92780
Location :AMBERGATE DRNE Site:RPV
Sel(ment :N/O BROOKFORD DRNE Date:09/23/10
Client :WlLLDAN
Interval SB NB C<mbined Day:Thursday
Bel(in AM PM AM PM AM PM
12:00 1 4 17 59 0 8 45 1 5 25 104
12:15 1 12 0 12 1 24
12:30 0 17 0 19 0 36
12:45 2 13 1 6 3 19
01:00 1 2 12 44 0 0 12 40 1 2 24 84
01:15 0 14 0 10 0 24
01:30 0 7 0 12 0 19
01:45 1 11 0 6 1 17
02:00 0 0 17 56 0 0 7 68 0 0 24 124
02:15 0 10 0 10 0 20
02:30 0 9 0 29 0 38
02:45 0 20 0 22 0 42
03:00 1 2 28 98 0 2 33 102 1 4 61 200
03:15 0 33 2 29 2 62
03:30 0 19 0 18 0 37
03:45 1 18 0 22 1 40
04:00 0 16 69 0 2 15 64 0 3 31 133
04:15 1 14 1 13 2 27
04:30 0 25 1 18 1 43
04:45 0 14 0 18 0 32
05:00 1 15 94 6 24 9 71 7 25 24 165
05:15 0 31 2 20 2 51
05:30 0 20 7 14 7 34
05:45 0 28 9 28 9 56
06:00 2 10 36 95 9 68 10 51 11 78 46 146
06:15 0 20 10 20 10 40
06:30 3 20 17 10 20 30
06:45 5 19 32 11 37 30
07:00 9 39 22 71 25 120 16 40 34 159 38 111
07:15 9 22 30 12 39 34
07:30 6 14 38 8 44 22
07:45 15 13 27 4 42 17
08:00 11 69 16 57 33 137 2 17 44 206 18 74
08:15 13 18 22 6 35 24
08:30 34 9 33 5 67 14
08:45 11 14 49 4 60 18
09:00 14 38 13 31 30 78 2 4 44 116 15 35
09:15 7 7 17 0 24 7
09:30 12 5 18 1 30 6
09:45 5 6 13 1 18 7
10:00 8 29 4 21 13 66 3 7 21 95 7 28
10:15 7 8 16 3 23 11
10:30 5 4 17 1 22 5
10:45 9 5 20 0 29 5
11:00 16 48 1 7 8 64 1 2 24 112 2 9
11:15 14 3 25 1 39 4
11:30 9 0 15 0 24 0
11:45 9 3 16 0 25 3
Totals 243 702 562 511 805 1,213
Split%30.2 57.9 69.8 42.1
Day Totals 945 1,073 2,018
Day Splits 46.8 53.2
Peak Hour 07:45 05:15 08:00 02:30 08:00 02:30
Volume 73 115 137 113 206 203
Factor 0.54 0.80 0.70 0.86 0.77 0.82
Data File :D1009146 7-12
Page 1
Location:BROOKFORD DRIVE
Segment:W/O AMBERGATE DRIVE
Transportation Studies,Inc.
2680 Walnut Avenue,Suite C
Tustin,CA.92780
d1009145
Site Code:RPV
Start 23-Sep-10
Time Thu EB WB Total
12:00 AM 1 1 2
01:00 0 0 0
02:00 0 0 0
03:00 4 0 4
04:00 2 1 3
05:00 14 11 25
06:00 47 16 63
07:00 66 33 99
08:00 50 20 70
09:00 38 31 69
10:00 44 29 73
11 :00 38 25 63
12:00 PM 26 33 59
01:00 19 28 47
02:00 41 33 74
03:00 52 34 86
04:00 41 43 84
05:00 32 45 77
06:00 50 35 85
07:00 23 44 67
08:00 11 44 55
09:00 3 30 33
10:00 4 9 13
11 :00 1 3 4
Total 607 548 1155
Percent 52.6%47.4%
AM Peak 07:00 07:00 07:00
Vol.66 33 99
PM Peak 15:00 17:00 15:00
Vol.52 45 86
Total 607 548 1155
Percent 52.6%47.4%
ADT ADT 1,155 MDT 1,155
7-13
Page 1 Transportation Studies,Inc.
2680 Walnut Avenue,Suite C
Location:BROOKFORD DRIVE Tustin,CA.92780
Segment:W/O AMBERGATE DRIVE d1009145
Site Code:RPV
Start 23-Sep-10 Total
Time Thu EB WB
12:00 AM 0 1 1
12:15 0 0 0
12:30 0 0 0
12:45 1 0 1
01:00 0 0 0
01 :15 0 0 0
01:30 0 0 0
01:45 0 0 0
02:00 0 0 0
02:15 0 0 0
02:30 0 0 0
02:45 0 0 0
03:00 1 0 1
03:15 0 0 0
03:30 0 0 0
03:45 3 0 3
04:00 0 0 0
04:15 0 0 0
04:30 1 0 1
04:45 1 1 2
05:00 3 6 9
05:15 2 1 3
05:30 1 2 3
05:45 8 2 10
06:00 10 4 14
06:15 3 6 9
06:30 17 4 21
06:45 17 2 19
07:00 14 8 22
07:15 23 6 29
07:30 15 8 23
07:45 14 11 25
08:00 6 6 12
08:15 10 7 17
08:30 13 6 19
08:45 21 1 22
09:00 13 6 19
09:15 8 8 16
09:30 11 9 20
09:45 6 8 14
10:00 13 7 20
10:15 13 6 19
10:30 7 9 16
10:45 11 7 18
11:00 9 5 14
11 :15 15 6 21
11:30 9 6 15
11 :45 5 8 13
Total 304 167 471
Percent 64.5%35.5%
Peak 06:30 07:00 07:00
Vol.71 33 99
P.H.F.0.772 0.750 0.853
7-14
Page 2 Transportation Studies,Inc.
2680 Walnut Avenue,Suite C
Location:BROOKFORD DRIVE Tustin,CA.92780
Segment:W/O AMBERGATE DRIVE d1009145
Site Code:RPV
Start 23-Sep-10 Total
Time Thu EB WB
12:00 PM 6 8 14
12:15 6 7 13
12:30 9 9 18
12:45 5 9 14
01:00 3 5 8
01 :15 3 6 9
01:30 7 8 15
01:45 6 9 15
02:00 5 7 12
02:15 10 10 20
02:30 16 6 22
02:45 10 10 20
03:00 17 7 24
03:15 19 7 26
03:30 6 9 15
03:45 10 11 21
04:00 8 16 24
04:15 16 16 32
04:30 7 6 13
04:45 10 5 15
05:00 6 13 19
05:15 9 11 20
05:30 4 10 14
05:45 13 11 24
06:00 15 10 25
06:15 19 10 29
06:30 11 5 16
06:45 5 10 15
07:00 12 9 21
07:15 2 11 13
07:30 6 12 18
07:45 3 12 15
08:00 1 9 10
08:15 4 18 22
08:30 2 12 14
08:45 4 5 9
09:00 2 7 9
09:15 0 10 10
09:30 1 10 11
09:45 0 3 3
10:00 0 2 2
10:15 2 4 6
10:30 0 1 1
10:45 2 2 4
11 :00 0 1 1
11 :15 0 1 1
11:30 1 0 1
11:45 0 1 1
Total 303 381 684
Percent 44.3%55.7%
Peak 14:30 15:30 17:45
Vol.62 52 94
P.H.F.0.816 0.813 0.734
Total 607 548 1155
Percent 52.6%47.4%
ADT ADT 1,155 AADT 1,155
7-15
185m~:::Y:L'''::L'r!L!'UH"';"''',;:1':[i"i'::!'·'ij·!:'::i3S·',·::::!iH'M~pjHj.:n
50T':I%:32 M.P.H.
15TH %:28 M.P.H.
AVERAGE SPEED:33 M.P.H.
10 MPH PACE:29 -38 M.P.H.
%IN PACE:79%
%OVER PACE:8%
%UNDER PACE:13%
OBSERVED BY:AMBROCIO SANTIAGO
CITY OF RANCHO PALOS VERDES
FOR ROADWAY:AMBERGATE DRIVE
SPEED VEHicLES SURVEYED TOTAL
(MPH)NORTHBOUND SOUTHBOUND VEHICLES
65 0
64 0
63 0
62 0
61 0
60 0
59 0
58 0
57 0
56 0
55 0
54 0
53 0
52 0
51 0
50 0
49 0
48 0
47 0
46 0
45 0
44 0
43 0
42 I~I~2
41 I~I)I 2
40 0
39 0
38 0 1*
37 2 *
36 2
35 1)1 4 P
34 XI)I 1)1 1)1 1)1 8 A
33 1)1 4 C
32 1)1 4 E
31 6 *
30 XI)lI)I 6 *
29 2 *
28 0
27 I)I)2
26 I)1
25 I)I)I)3
24 0
23 0
22 0
21 0
20 0
19 0
18 0
17 0
16 0
15 0
GRAND TOTALS I 48
LOCATION:
ROAD
DESCRIPTION:
ACCIDENT
HISTORY:
ACCIDENT RATE:
ROADWAY
CONDITIONS:
WEATHER:
EXISTING
SPEED LIMIT:
AVERAGE
DAILY TRAFFIC:
N/O BROOKFORD DRIVE
SUNNY
NIP
DATE:9-01-10 TIME START:10:00AM TIMESTOP:11:00AM
EXPECTED RATE:
PROPOSED
SPEED LIMIT:_
SEGMENT LENGTH:_
DATE
Filename:AMBERGATE-N-O BROOKFORD·NB.xls.xls 91712010
7
-
1
6
18srHl~::H'n","'!!!''',''''H!,H·"·ij',w"'"";';''',iUU3Sh,"'H,MJPJH~:HI
50TH %:33 M.P.H.
15TH%:29 M.P.H.
AVERAGE SPEED:33 M.P.H.
10 MPH PACE:29 -38 M.P.H.
%INPACE:83%
%OVER PACE:8%
%UNDER PACE:8%
OBSERVED BY:AMBROCIO SANTIAGO
CITY OF RANCHO PALOS VERDES
FOR ROADWAY:AMBERGATE DRiVE
SPEED I VEHICLES SURVEYED
(MPH)NORTHBOUND II SOUTHBOUND
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
~:~~
22
21
20
19
18
17
16
15
GRAND TOTALS
TOTAL
VEHICLES
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
'0
0
0
0
0
'1
1
1
0
1 *
1 *
4 *
4 P
5 A
4 C
2 E
2 *
5 *
2 .*
0
0
0
1
2
0
0
0
0
0
0
0
0
'0
36
LOCATION:
ROAD
DESCRIPTION:
ACCIDENT
HISTORY:
ACCIDENT RATE:
ROADWAY
CONDITIONS:
WEATHER:
EXISTING
SPEED LIMIT:
AVERAGE
DAILY TRAFFIC:
N/O BROOKFORD DRIVE
SUNNY
NIP
DATE:9-01-10 TIME START:10:00AM TIME STOP:11:00AM
EXPECTED RATE:
PROPOSED
SPEED LIMIT:_
SEGMENT LENGTH:_
DATE
Filename:AMBERGATE-N·O BROOKFORD -SB.xIs.xIs 9/7/2010
7
-
1
7
Page 1 of2
Nicole Jules
From:Ruth Smith [rsmith2@WILLDAN.com]
Sent:Thursday,March 10,2011 1:34 PM
To:Nicole Jules
Subject:RE:AMBERGATE
Hi Nicole-
It is my understanding that although the Sheriff's Department's records only show one traffic collision
at the intersection of Ambergate &Brookford in the last 3 years,there was testimony and documents
presented by local residents indicating that there were six unreported collisions at the intersection in
2008 and 2009.
It should be noted that the practice of police officers not taking reports for non-injury collisions began
in the early 1990s as a cost-reduction effort and became the norm for southern California.The result
was that the number of reported collisions went down,whereas the minimum collision requirements
for federal and state traffic-related warrants were never adjusted accordingly.In response to that,I
generally review the previous three years in'stead of just the previous 12 months to try to get a better
sense of the actual number of collisions.
My experience has been that most intersections in residential areas have very few traffic collisions,
usually one or less per year.Six or seven collisions in a two-year period indicates to me that there is a
problem.
Based on these factors,I support the Traffic Safety Commissions"recommendation to install a three-
way stop at Ambergate &Brookford.
Please let me know if you have any questions.I'm heading to Placentia for the afternoon,so call me on
my cell.
Thanks!
Ruth
1>.....••.•....'>>/.:..WI LlPAN I'-'II'Engmoonng
Ruth Smith,TE,PTP
Project Manager
Willdan Engineering
2401 East Katella Avenue,Suite 450
Anaheim,CA 92806
T.714.978.8225
F.714.978.8295
C.714.287.8449
ruthsmith@willdan.com
3/10/2011 7-18
From:Nicole Jules [mailto:nicolej@rpv.com]
sent:Thursday,March 10,201112:10 PM
To:Ruth Smith
Subject:AMBERGATE
Hi Ruth,
I need to finalize my staff report,what's the status on your opinion regarding the stop signs?
City of Rancho Palos Verdes
Nicole Jules,P.E.
Senior Engineer
Department of Public Works
30940 Hawthorne Blvd
Rancho Palos Verdes,CA 90275
310.544.5275
310.544.5292 fax
3/10/2011
Page 2 of2
7-19
Sap 04 10 11:04p 310.807.8336 3108078336 p.1
LE\lEL 2 TRAFFIC CALt\1ING PETITION
We~the undersigned,desire,agree with,and request implementation ofthe following traffic
calming tools(s):.
Install (specified trafrlC calming tool)on (subject street)between (first cross-street)
and (second cross-street)orat(specified location)per the attached conceptual plans
dated (month/day/year;.
Install two (2)Stop Signs on Ambergate Drive at Brookford Drive per the
attached conceptual plans or map dated August 301 2010.
I understand that the proposed traffic calming tools may have a direct impact on my
property.By signing this·petition,I acknowledge that I have read the detailed description of
the traffic calming tools being proposed.
Address
Petition Spokesperson:S}c.o-rr BUI?Ac.Jt:--.TelephoneNo:{3t0 t:otf-131Cf
PAQ{;f
City ofRJlncbo Palos Verdes
•33.NelsbIlo1boodTraffieCa1~Plopm
7-20
.,----_.,-,---_.._------~---,--------_..,--_._-----
Sap 04 10 11:04p 310,807.8336 3108078336 p.2
r f''\'l,',,-.'1"'1'''1 '\FI::'I('1 ~',\1 '\:"\1(;l:q"I"!"I'I(),\J,_J f...\.,•.,L \..,.\.\.,,I •._.••,.'...,.~.,..
VVe ..the undersigned.desirr~,agree with,and request imprem0ntation of the folio-wing traffic
calming tools(s):,
install (specified traffic calminy;tool)on (subject street)bet'Neen (first cross-street)
and (second ClOss-street)or at (specified focation)per the attached conc'ep:LI8f plans
oated (month/day/year).:
Instal!two (2)Stop Signs on Ambergate Drive at Brookford Drive per the
attached conceptual plans or map dated August 30.2010.
I understcJrlQ that the proposed traffic calming tools may have a direct Impact on my
property.By signIng thi.s petition,I acknowledge th.at 1have read the detailed descripbonof
tho trafflc calmi~g tools being prop~ed.
Tetepl'l;ooe No
PetItIon Spokesperson:sc.01"T 'Bufilct<.Telephone No.(st0)TO'-/-2:?>lCf
,.-
,';
7-21
3108078336 p.3
7-22
Sap 04 10 11 :08p 310.807.8336 3108078336 p.4
7-23
Nicole Jules
From:
Sent:
To:
Subject:
Ok sounds good.
Thanks,
Scott
Scott B.[scottburack@gmail.com]
Friday,February 18,2011 5:37 PM
Nicole Jules
Re:Ambergate 1 Brookford -Stop Sign and Traffic Calming -10/25/2010 TSC Meeting
voice:
Fax:
Email:
310-704-2319
310-807-8336
scott@click2scott.com
On Feb 18,2011,at 3:45 PM,Nicole Jules <nicolej@rpv.com>wrote:
>Greetings Scott,
>
>Per my'phone call to you today,this item is scheduled to be on the
>March 15th City Council meeting.
>
>I'll be in touch as we me move closer to the date.
>
>City of Rancho Palos Verdes
>Nicole Jules,P.E.
>Senior Engineer
>Department of Public Works
>30940 Hawthorne Blvd
>Rancho Palos Verdes,CA 90275
>310.544.5275
>310.544.5292 fax
>
>-----Original Message-----
>From:scottburack@gmail.com [mailto:scottburack@gmail.comJ On Behalf
>Of Scott B.
>Sent:Thursday,February 17,2011 10:34 PM
>To:Nicole Jules
>Cc:CC@rpv.comi traffic@rpv.com
>Subject:Re:Ambergate /Brookford -Stop Sign and Traffic Calming -
>10/25/2010 TSC Meeting
>
>Hi Nicole,
>
>What did you learn about this,as I have not heard back for you in a while.
>
> I would have hoped the City Counsel would have made their decision on
>this matter by now since the Traffic Safety Commission (TSC)approved
>the stop sign request back in October,2010.
>
>Please update me as we have be waiting for the stop signs at Ambergate
>Drive &Brookford Drive for almost 2 years,and with the green light
>given by the TSC,I would have expected this would have been done by
>now.
>
>Thanks,
>Scott Burack
>
>---------------------
>
1 7-24
310-704-2319
310-807-8336
scott@click2scott.com
>
>On Friday,January 14,2011,Nicole Jules <nicolej@rpv.com>wrote:
»Hi Scott,
»
»The traffic calming improvements are scheduled for this upcoming
»Monday,January 17,2011.
»
»I'll let you know when and if the appeal is scheduled for City Council.
» I need to discuss the appeal process with the Deputy and Director of
>Public
»Works.
::;->
»Thanks.
»
»
»City of Rancho Palos Verdes
»Nicole Jules,P.E.
»Senior Engineer
»Department of Public Works
»30940 Hawthorne Blvd
»Rancho Palos Verdes,CA 90275
»310.544.5275
»310.544.5292 fax
»
»-----Original Message-----
»From:Scott B.[mailto:scottburack@gmail.com]
»Sent:Friday,January 14,2011 12:13 AM
»To:Nicole Jules
»Cc:traffic@rpv.comi Scott Burack
»Subject:Re:Ambergate /Brookford -Stop Sign and Traffic Calming -
»10/25/2010 TSC Meeting
»
»Hi Nicole,
»
»Any info on this project?I have not heard from you since the end of
»December.Has the City Manger added the stop signs to the city
»counsel agenda?
»
»We have had several days now of dry weather and according to the
»current weather report we are not getting any rain for at least the
»next 7-10 days.So I would think we a all good to go to get the
»striping installed on Ambergate Drive.The new speed signs &steep
»grade signs can also be installed too.
»
»Please let me know when you will schedule the street crew to do the
»work on Ambergate Drive.
»
»Thanks,
»Scott Burack
»
»
»Voice:
»Fax:
»Email:
»
»
»
»On Dec 29,2010,at 7:19 PM,"Scott B."<scottburack@gmail.com>wrote:
»
»>Hi Nicole,
»>Thanks for the status update.
»>Have a Happy New Year!!!
»>
»>Scott Burack
»>
»>
»>Voice:310-704-2319
2 7-25
310-807-8336
scott@click2scott.com
»>Fax:
»>Email:
»>
»>
»>
»>On Dec 29,2010,at 5:37 PM,Nicole Jules <nicolej@rpv.com>wrote:
»>
»»Hi Scott,
»»
»»1)I will have an ETA on the striping as soon as we have 72 hours
»»of
»clear
»»weather.The striping crews are ready to go except Mother Nature is
»»in charge right now.After the New Year and a clear weather
»»forecast,I'll
»give
»»you an approximate date of installation.
»»
»»2)The City Council has not set a date a for the stop sign.The City
»Council
»»does not set the date,the City Manager does.We are in line with
»»other projects and programs.As soon as I know,you will know,well
»»in
>advance.
»»
»»3)The new striping will include red curb along the long steep
»»vertical/horizontal curve on Ambergate.
»»
»»I'll touch base with you when City Hall re-opens on January 3rd.
»»
»»City of Rancho Palos Verdes
»»Nicole Jules,P.E.
»»Senior Engineer
»»Department of Public Works
»»30940 Hawthorne Blvd
»»Rancho Palos Verdes,CA 90275
»»310.544.5275
»»310.544.5292 fax
»»-----Original Message-----
»»From:scottburack@gmail.com [mailto:scottburack@gmail.com]On
»»Behalf Of Scott B.
»»Sent:Tuesday,December 28,2010 10:25 PM
»»To:Nicole Jules
»»Cc:traffic@rpv.com;Scott Burack
»»Subject:Re:Ambergate /Brookford -Stop Sign and Traffic Calming
»»-10/25/2010 TSC Meeting
»»
»»Hi Nicole,
»»
»»I just wanted to check in with you on the following outstanding
»»items we have been working on recently:
»»
»»1)Any ETA on the striping &improvements being started on
»»Ambergate Drive?This was already approved by the TSC back on
»»October 25th (over
»»2 months ago).
»»
»»2)Has the City Counsel set a date to hear the stop sign matter
»»that the TSC approved back in October?
»»
»»3)will the new striping also include no parking red zones around
»»the large steep curve on both North &South bound lanes?If not,
»»can we get the TSC to hear this matter?I know it was discussed at
»»the two TSC meetings I attended,but I am not sure if this was
»»approved by the TSC.It is also a key part of this project making
»»the tight steep curve safer to drive around.
»»
3 7-26
»>
>
>--
>
>
>Thanks,
>Scott
>----------------------------------------------
>Voice:
>Fax:
>Email:
310-704-2319
310-807-8336
scott@click2scott.com
~----------------------------------------------
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>------------------------------------------------
>
>
4 7-27