HomeMy WebLinkAbout08 STOP @ RAINTREE 01-17-05
AGENDA REPORT
Agenda Item
Reviewed:
City Manager
Finance Director
MEETING DATE: JANUARY 17, 2005
TO: WILLIAM A. HUSTON, CITY MANAGER
FROM: PUBLIC WORKS DEPARTMENT/ENGINEERING DIVISION
SUBJECT: AUTHORIZATION TO INSTALL NORTHBOUND STOP CONTROL FOR
RAINTREE LANE AT ANA TREE PLACE
SUMMARY
An analysis of traffic control at the intersection of the northbound approach of Raintree
Lane at Ana Tree Place has been completed. It has been determined that the installation
of northbound stop control for Raintree Lane at Ana Tree Place is appropriate for
assignment of vehicular right of way at this intersection.
RECOMMENDATION
It is recommended that the City Council adopt Resolution No. 05-15, authorizing the
installation of stop controls. for the northbound approach of Raintree Lane at Ana Tree
Place.
FISCAL IMPACT
It is estimated that the cost to install a "stop" sign, a "stop ahead" sign, and appropriate
pavement markings at the subject intersection is approximately $800. Adequate funds are
available in Engineering Division Account No. 01-402-6230 (Sign Maintenance and Striping)
and Account No. 01-402-6625 (Traffic Signs & Paint) to perform this work.
BACKGROUND
For orientation purposes Raintree Lane is considered a north/south local residential street.
The westerly and easterly intersections of Raintree Lane and Ana Tree Place are
approximately 1 00 feet ,apart, constituting a "jog" in Raintree Lane for northbound and
southbound traffic. Despite supplemental speed signs recommending 10 MPH for Raintree
Lane traffic as it approaches Ana Tree Place from each direction, many drivers have been
observed negotiating the "jog" in Raintree Lane at relatively high speeds. Many of these
drivers cross over the yellow centerline in conflict with on-coming traffic due to the speeds
at which they are driving.
DISCUSSION
On November 1, 2004 the Engineering Division received a petition from residents of Ana
Tree Place requesting that the City of Tustin install traffic control measures at the two
intersections of Raintree Lane and Ana Tree Place. The westerly intersection of Raintree
Lane and Ana Tree Place is a ninety degree "knuckle" and, therefore, does not experience
cross traffic in need of right-of-way assignment. Traffic issues at this location are related to
the speed of approaching vehicles and are being addressed with a radar actuated, solar
Authorization to Install Northbound Stop Control for Raintree Lane at Ana Tree Place
January 17, 2005
Page 2
powered electronic "driver feedback" sign. This type of sign tells drivers how fast they are
traveling and is already planned for installation later this winter.
The easterly intersection is a "Tee" intersection, with northbound Raintree Lane terminating
into Ana Tree Place. Similar to the westerly intersection, the speed of approaching
Raintree Lane traffic is a concern at this location. Unlike the westerly intersection,
however, this intersection has conflicting traffic movements without positive assignment of
right-of-way for vehicles entering the intersection. Due to lack of right-of-way assignment,
analysis of stop controls was necessary at this intersection.
The installation of stop controls is typically determined by satisfying established Caltrans
Warrants along with other site-specific conditions that justify the placement of stop signs at
certain locations. The warrants, which are one means of justifying the installation of stop
signs, require evaluation of numerical data collected at the subject location, including traffic
volumes and accident data. To fully analyze a location for the installation of stop controls,
roadway characteristics and traffic conditions need to be evaluated on a case-by-case
basis. At this location the Caltrans Warrants for stop sign installation are not satisfied. A
copy of the warrant analysis is attached.
However, it has long been acknowledged that local residential areas represent unique
situations where engineering judgment may be utilized in determining the installation of
stop signs. At this location it is appropriate to analyze other roadway characteristics and
traffic conditions that may provide more pertinent considerations. Field observations,
supported by eye witness accounts from residents and the Police Department, indicated
that some northbound Raintree drivers are not yielding to Ana Tree drivers. This is partially
due to a sight obstruction for northbound Raintree drivers by the home on the east side of
Raintree at Ana Tree, and partially due to the speed of approaching Raintree traffic.
Installation of a "Stop" sign and a "Stop Ahead" sign for northbound Raintree traffic at Ana
Tree Place will reduce the potential conflict at this intersection.
Standard practice at this "Tee" intersection would be to assign right-of-way to through traffic
on Ana Tree Lane, while requiring northbound Raintree Lane traffic to stop and yield. In
consideration of the forgoing discussion, it is concluded that the installation of stop control
for northbound Raintree Lane at Ana Tree Place is appropriate.
Tim D. Serlet
Director of Public Works/City Engineer
Dana R. Kasdan
Engineering Services Manager
TDS:DRK:ccg:Auth to Install Stop Controls at Raintree & Ana Tree. & Reso 05-15.doc
Attachments: Resolution No. 05-15
Location Map
Stop Warrant Analysis
RESOLUTION NO. 05-15
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF TUSTIN,
CALIFORNIA DESIGNATING THE LOCATION OF CERTAIN STOP CONTROL
INTERSECTIONS
WHEREAS, Section 5323 of the Tustin City Code provides for the designation of
stop intersections by resolution of the City Council upon the making of certain findings;
and
WHEREAS, the City Council hereby finds and determines that the placement of a
stop sign at the intersection listed below is necessary to facilitate the flow of traffic and
provide for the assignment of vehicular right-of-way; and
WHEREAS, said findings are made subsequent to receipt of a traffic engineering
report summarizing traffic survey data relative to said intersection;
NOW, THEREFORE, BE IT RESOLVED by the City Council of Tustin that the
intersection set forth below is hereby designated as a stop controlled intersection and
the City Engineer is hereby directed to place and maintain a stop sign at one entrance
to said intersection as herein specified, and that Resolution 05-15 shall take effect upon
placement of said signs.
INTERSECTION
Northbound Raintree Lane at Ana Tree Place
PASSED AND ADOPTED at a regular meeting of the City Council of the City of
Tustin held on the 17th day of January 2005.
Lou Bone, Mayor
ATTEST:
City Clerk
STOP CONTROL FOR
RAINTREE LANE AT ANA TREE PLACE
/
/'/;
~
/
/
N
w
E
s
CITY. O.F TUSTIN
ALL- WAY STOP WARRANT
INTERSECTION OF (lA
,J 'f/J...t& LM.
. (Major Street)
AND ANA ít<.té . PL1Þ
(Minor Street)
"
Any of the following conditions may 'warrant an all-way stop control where the volume of traffic on the .
intersecting streets is approximately equal: (
1. Where traffi~ signals årewarranted and the need is urgent, the
aI I -stop is an interim measure.
Meets signal warrants?
yes; /. no. Urgent?
2. Accident occurrence, as indicated by 5 or more reported
accidents of a. type susceptible of correction by an. way-way
stop installation in a 12-month period. Types of accidents
susceptible of correction include right angle as well as
right- and left-turn collisions.
Accidents =
5 or more?
no.
yes;
3. Minimum Volume Warrant:
a. Total e,ntering volume'must average at least 500 vph
any 8 hours of an average day.
ENTERING TRAFFIC VOLUME
for 8 hours = ---td 0
1 hour ave. = 10 ~
b. The combined vehicular and pedestrian volume from minor
street must average 200 unites per hour with an average
delay of at least 30 seconds per vehicle during the
maximum hour.
Side street volume and . I
peds for same 8 hours = /'l 0
1 hour ave. - t{ .
DELAY =
,
c. When the 85th - percentile approach speed of the 'm.ajor
street exceeds 40 miles per hour, the minimum vehicular
volume warrant is 70% of the above requirement.
85th%-tile speed = 2-S ~l~
70th % applies?
yes; / no.
Applicable minimum volumes:
Total ; Minor'
~
Traffic Volume Ratio Determination
Traffic yol lime on major street approaches = 2 q \
Traffic vol ume on minor street approaches = J s 1
Total volume. I. = '! s:'{$ .
RA TIO = 5"1, b 'I?., c.f
Comments :
"
ALL-WAY STOP CONTROL WARRANTED?
YES; ,/ NO.
date: I I:) z..q I D
TUSTIN.ALL
Calc. by:'
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TRAFFIC DATA SERVICES. INC.
MACHINE COUNT DATA
LOCATION - RAINTREE & AHA TREE
----.~-----~---------------------~------u---------------------------~-----~--------------------------------------------
TIME
--w_----------------~"---~- AM --------------------------
N. LEG E. LEa S. LEG W. LEG TOTAL
(S8) (WB) (HB) (EB)
HOURL Y VOLUMES
TIME
---------~----------~~----- PM ~------------------~-----
N. LEG E. LEG S. LEG W. LEG TOTAL
{SB} (we) (NS) {EB)
12:00... 1:00
0
-----*--_._-----------~----~~--~-------~------------~--------~---_ft._--"---~--~~~---~-~~---------------------------~---
42
83 -
19
1:00" 2:00
-
0
2:00.. 3:00
0
2
3;00 - 4:00
-
4:00 - 5:00
...
1
5:00 - 6:00
6:00.. 7:00
2
o@
3 - @)
II@
@
@
7 : 00 -' 8: 00
..
6:00.. 9:00
9:00 - 10:00
..
2
10:00 - 11:00
-
4
11:00 ~ 12:00
2
25
----------------_W_~y----------------------------------~-----------_w_----~_w_w~~----_w_--------------------------------
1,549
-
TOT Af.S
7
0
0
1
13
21
13
20
12:00 - 1:00
1:00 - 2:00
..
3
3
@
31
37
30
30
21
25
19
3
c45
64
,/ íõã)
'.. . ....,.",;'
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@
83 --'
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(~\
\~
82
2
z
z:oo - 3:00
3:00 - 4:00
4;00 - 5:00
-
6
~
53
52
80
94
52
49
74
0
0
5:00 - 6:00
6:00 - 7:00
...
...
1
1
2
(§
35
39
67
0
13
3
27
7:00.. 8:00
8~OO - 9:00
-
...
5
0
4
3
2
1
51
657
21
42
20
43
9:00 - 10:00
-
10
14
16
58
(~
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68
râ8)
'---""
10:00 - 11:00
..
841
-~------------------------------------------~--_w_--------_M______-------------------------------...----------------------
30
33
28
43
42
69
11~OO - 12:00
...
East Leg (WB) - - MONDAY 10/18/04 TO TUESDAY 10/19/04
South Leg (NB) - - MONDAY 10/18/04 TO TUESDAY 10/19/04
West Leg (E8) - - MONDAY 10/18/04 TO TUESDAY 10/19/04
1ó "1A'L---
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TRAFFIC DATA SERVICES. lfit.
MACHINE COUNT DATA
-------------------------------------------------------------~---------------------------------------------------_N___-
LOCATION - RAINTREE & ANA TREE
TIME
-----"---------~----------- AM ---~-------------------._-
TOT At.
N. LEG E. LEG S. lEG W. LEG
(SD) ('WB) (Me) (ra)
15 MINUTE VOLUMES
TIME
--------------------------~ p~ -------~----~M____M_W___-
TOTAL
N. LEG E. LEG S. LEG W. LEG
(SB) ('WB) fNB) (n)
------"~-------------------------------------------------_W_-------------~-------"Ø_---_uw_--------"------------~------
12:00 - 12:15
12:15 - 12;30
12:30 - 12;4E
12;45 - 1:00
1:-00 - 1:1'5
l:lS - l;SO
1:3t1 - 1;45
1;45... 2:00
"2':00 - '2: f5
2: 15.. "2 ;'30
'2:gt} - 2~45
2 = 45 - '3 : 00
3 ~'OO - 3 ~ 15
3:15 - 3:30
3;.30 - 3:43
3:4'5 - 4:00
4dm - 4:15
4~15 - 4~30
4:30 - 4~4S
4:45 - 5:00
5:00 - 5:15
5: 15.. 5; 30
5:30 - 5:45
5":45.. 6'; 00
6:00 - 5~lS
6": 15... 6 :30
6:30.. &:45
6:45.. 7:00
7~OO.. '~lS
7': 1'S... 7 = 3'0
'7~30 - 7';45
7':~S - 8: 00
'S.~"oQ - 'S': 1'5
8':1'5 - 8:3'0
-a":3Q - '8:45
8~('5 - '9~'OO
9';00 - 'S': lS
9~lS - 9':30
g.: 3ß... g': 4S
9 ~ 45- 10 :'ot)
l~:OO - 10: lS
10:15 r- 10:30
1~~30 - 10~45
10:45... 11~OO
11:00 - 11:15
11:15 -' 11;gO
11:30 - 11:45
11~45 - 12:00
...
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0
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2
1
2
1
0
0
0
2
0
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3
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0
"0
0
0
0
0
0
0
0
0
1
1
4
4
4
3
6
3
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5
9
18
10
10
16
23
2'0
16
12
1:2
11
12
11
!
7
18
7
8
8
7
4
3
11
9
9
8
16
2
6
3
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1
0
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0
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0
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12:00 - 12:15
12:15 ... 12.:30
12~30 ... 12:4"5
12:45.. 1:00
1:00 - 1:15
1:15 - 1:30
1 : '3Q - 1 : 4S
1: 45 - "2 :'ß()
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0
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0
4
'0
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1
2
0
0
0
0
2
0
0
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0
10
10
(1
12
11
'8
5
7
11
10
10
7
'It)
16
20
1'8
l5
11
14
12
15
10
9
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10
10
10
15
2'5
23
15
20
22
1'8
15
Z4
6
5
1
8
9
11
4
19
0
0
0
n
"2:00 - .2: 1S
2:15 - "2:30
Ž:'30 - 2:4'5
'2:45 - 3:00
3:00 - ~:t5
3: 15. '3 : 30
3 : 30 - 3 ; 45
3:45 - 4:00
9
5
11
12
5
6
8
11
11
12
11
8
5
12
12-
6
ì
9
8
6
20
14
10
8
2'2
'26
'32
28
24
16
25
26
1"2
10
16
14
22
18
22
18
11
16
24
26
as
30
33
26
3
2
3
S
5
10
4
11
8
11
21
18
15
28
27
32
0
()
0
2
4 : 00. 4 : 1'5
4~lS - 4:30
4:'30 - 4: 45
4:45... 5:00
5:00 - S~lS
5:15 - 5:30
5:30 - 5~45
5'~45... 6: 00
6:00 - 6:15
6:15 - 6~30
6:30 - 6~4'5
6~4S - ':00
7:00 - 7:15
7:15 - 7:30
7: 30... 7 ~.45
7:45 - 8:00
"8 :"00... '8: 15
S';15 - 8:3'0
'S': 3"0... '8 : ~5
8'~45 - i:OO
'9:t'O - 9:15
t :-15 - g '~ 31>
'9:3~... 9~45
9~4S - 10~OO
10:00 - 10~15
10:15 - 10~30
10:30 - 10~45
10:45 - 11:00
11 dX> - 11 ~ lS
11:15 .. 11:30
11:30 .. 11~45
11:45 - 12:00
7
3
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7
1"6
8
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4
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5
2
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1
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28
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is
34
41
33
26
1'1
10
6
6
'27
23
1'8
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1"8
21
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17
27
23
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14
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19
18
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13
13
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13
10
7
9
23
19
12
13
7
6
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15
11
5
11
3
2
6
3
TOTALS
----------"'___M______-----------_..._----------------~~--------...~---~----------...-ft~-~......_-----------~--_.._------------~..._--
1,549
51
657
841
-~~-~..._-----------_..._---------------------------------..._------------~..._----------..._-~---------------~~----~---------M__-
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