HomeMy Public PortalAbout06) 7D Adoption of Reso No. 14-5015 Approving the Muscatel Avenue Engineering and Traffic Survey and recommended Speed Limits and Traffic Calming ImprovementsAGENDA
ITEM 7.0.
COMMUNITY DEVELOPMENT DEPARTMENT
MEMORANDUM
DATE: August 5, 2014
TO: The Honorable City Council
FROM: Donald E. Penman, Interim City Manager ~
Via: Michael D. Forbes, AICP, Community Development Director~
By: Bryan Ariizumi, Public Safety Supervise ~
SUBJECT: ADOPTION OF RESOLUTION NO . 14-5015, APPROVING THE
MUSCATEL AVENUE ENGINEERING AND TRAFFIC SURVEY AND
RECOMMENDED SPEED LIMITS AND TRAFFIC CALMING
IMPROVEMENTS
RECOMMENDATION:
The City Council is requested to adopt Resolution No. 14-5015, approving the Muscatel
Avenue Engineering and Traffic Survey (Traffic Study) and recommended speed lim its
and traffic calming improvements.
BACKGROUND:
1. At the January 21, 2014 City Council meeting, Temple City residents Dan DeBoer
and Lydia Johnson spoke regarding traffic concerns on Muscatel Avenue.
2. In February 2014, Transtech Engineers, Inc. (Transtech) completed a traffic study
of Muscatel Avenue.
3. On April 23, 2014, the Transportation and Public Safety Commission
(Commission) reviewed the Traffic Study and recommended a two-phase
implementation of proposed improvements .
ANALYSIS:
In response to a complaint received by residents about excessive traffic volumes and
speeding along Muscatel Avenue between Longden Avenue and Garibaldi Avenue,
Transtech completed a traffic study on Muscatel Avenue between Longden Avenue and
Las Tunas Drive. The study analyzed existing conditions and looked at traffic calming
measures that could be implemented along Muscatel Avenue.
City Council
August 5, 2014
Page 2 of 3
Muscatel Avenue currently has a posted speed limit of 35 mph. The purpose of the
Traffic Study was to review the relevant issues that affect the residents and traffic along
this segment. The area is primarily a residential neighborhood with an elementary
school located at Muscatel Avenue and Emperor Avenue, which lies within
unincorporated Los Angeles County.
After analyzing the data collected, Transtech is recommending the following:
1. Reduce the speed limit on Muscatel Avenue from 35 mph to 30 mph;
2. Install new, larger (30" x 36") 30 mph signs at identified locations along the
corridor;
3. Replace all stop signs with larger (36" x 36") stop signs;
4. Install stop ahead signs and pavement legends at identified locations;
5. Repaint existing crosswalks and stop bars; and
6. Install solid white stripes on both sides of Muscatel Avenue between Longden
Avenue and Garibaldi Avenue, eight (8) feet from the curb face. The white
stripes are used as a traffic calming measure to visually reduce the roadway
width.
The Commission reviewed the Traffic Study and agreed with the recommended speed
limits and traffic signage and striping proposed by Transtech. However, the
Commission recommended a two-phase implementation of the proposed improvements
and the addition of "ALL WAY" supplemental plaques at intersections where all
approaches are controlled by stop signs. The phases of implementation are described
below:
Phase One
~ Installation of larger speed limit signs and stop signs;
~ Installation of stop ahead signs; and
~ Installation of "ALL WAY" supplemental plaques at intersections where
all approaches are controlled by stop signs.
Phase Two
~ Slurry seal and installation of new traffic striping and markings on
Muscatel Avenue as part of upcoming Pavement Management Plan
(PMP) projects.
City Council
August 5, 2014
Page 3 of 3
CONCLUSION:
The Transportation and Public Safety Commission reviewed the Traffic Study prepared
by Transtech and provided their recommendations. The City Council is requested to
approve the speed limits and traffic signage and striping in two phases as
recommended by Transtech and the Transportation and Public Safety Commission.
FISCAL IMPACT:
Approval of this item does not have an impact on the Fiscal Year (FY) 2014-15 City
Budget. Funds have been included in the FY 2014-15 budget to upgrade traffic signs
and for street improvement projects.
ATTACHMENT:
A. Muscatel Avenue Engineering and Traffic Survey
ATTACHMENT A
To:
Date:
From:
ANALYSIS OF TRAFFIC CONDITIONS ON
MUSCATEL AVENUE BETWEEN LONGO EN AVENUE AND LAS TUNAS DRIVE
IN TEMPLE CITY
Public Works Department
City of Temple City
Monday, March 10, 2014
Yunus Rahi, TE, PE, Transtech Engineers, Inc.
Jana Robbins, Sr. Transportation Analyst, Transtech Engineers, Inc.
Melissa Demirci, Transportation Analyst, Transtech Engineers, Inc.
Subject: ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN
LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY
INTRODUCTION
In response to a complaint received by a resident about excessive traffic volumes and
speeding along Muscatel Avenue between the segment of Longden Avenue and
Garibaldi Avenue, City Traffic Engineering staff has completed a traffic study, analyzed
existing conditions and looked at traffic calming measures that could be implemented
along this corridor.
Muscatel Avenue between Longden Avenue and Las Tunas Drive is within the limits of
Temple City. Segments of Muscatel Avenue north of Longden Avenue and south of Las
Tunas Drive are within the County of Los Angeles.
The review was extended south of Longden Avenue to Las Tunas Drive as this segment is
posted with a 35 mph speed limit. Muscatel Avenue north of Longden Avenue and
south of Las Tunas Drive (in the County of Los Angeles) is posted with a 25 mph speed
limit.
The resident noted that motorists were using the Muscatel Avenue corridor between
Longden Avenue and Las Tunas Drive as a cut through avoiding traffic congestion on
Rosemead Boulevard due to the Beautification Project.
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND lAS TUNAS DRIVE IN TEMPLE CITY Page 1 of 22
The study's purpose was to review the relevant issues that affect the residents and
traffic along this segment. The area is primarily a residential neighborhood with an
elementary school at Emperor Avenue and Muscatel Avenue which lies within Los
Angeles County. The County is responsible for any improvements north of Longden
Avenue.
···················~~~~~~~~~~~~~~~~--~~~~~~~~~~~~~~~~~~-
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPlE CITY Page 2 of 22
The study has been broken down into two segments as follows:
• Segment 1: Muscatel Avenue between Longden Avenue and Garibaldi Avenue
(Approx. 1,500 ft.) (posted 35 mph)
• Segment 2: Muscatel Avenue between Garibaldi Avenue and Las Tunas Drive
(Approx. 2,000 ft.) (posted 35 mph)
Leg-end
~
1 Segment 1: Muscatel
I 1 Ave between Longden
I Ave and Garibaldi Ave I
1 (App rox. 1,500 ft.) •
1 Segment 2: Muscatel
I Ave between Garibaldi I
I
I •
Ave and Las Tunas Dr
(Approx. 2,000 ft.)
Rosemead Blvd
Beautification Project:
Callita St to Pentland St
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS T UNAS DRIVE IN TEMPLE CITY Page 3 of 22
BACKGROUND
Segment 1 : Muscatel Avenue between Longden Avenue and Garibaldi Avenue
Posted 35 mph
n==-------~~--~~-----=--
This segment of the road has a 40 foot street width carrying one lane in each direction
with parking permitted on both sides. There are no east-west streets connecting
Muscatel Avenue in this segment. The intersection of Longden Avenue and Garibaldi
Avenue at Muscatel Avenue is all way stop controlled. Land use is single family
residential. During a field visit a temporary speed feedback sign with a 35 mph posted
speed limit was stationed in front of the address 6138 Muscatel on the east side of
Muscatel Avenue for NB travel. A permanent 35 mph speed limit sign is posted south of
the Longden Avenue and Muscatel Avenue intersection, in front of the address 6263
Muscatel Avenue on the west side of Muscatel Avenue for SB travel.
Segment 2: Muscatel Avenue between Garibaldi Avenue and Las Tunas Drive
Posted 35 mph
--~--------~r-~~--~
This segment of the road has a posted 35 mph speed limit, with a 40 foot street width
carrying one travel lane in each direction . Two east-west streets connect to Muscatel
Avenue in this segment: Elm Avenue and Hermosa Drive . Elm Avenue is stop controlled
for EB and WB vehicles only and Hermosa Drive is all way stop controlled at Muscatel
Avenue. Garibaldi Avenue is also all way stop controlled. Land use is primarily si ngle
family residential with some commercial use near Las Tunas Drive. Parking is allowed on
both sides of the street.
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEM PLE CITY Page 4 of 22
BACKGROUND
During certain phases of the Rosemead Boulevard Construction Project, some drivers
may have used Muscatel Avenue and other north-south corridors . The City has
attempted to make every effort to shorten any such closure durations and to maintain
traffic flow back onto Rosemead Boulevard.
March 2013 Stop Study at Muscatel Avenue and Jaylee Drive:
In March 2013 a study was conducted for all-way stop control at Muscatel Avenue and
Jaylee Drive. During that time, tube counts were taken and fo und that there were 4,041
vehicles per day traveling in the north and south direction on Muscatel Avenue. The
intersection of Muscatel Avenue and Jaylee Drive did not meet warrants for all-way stop
control. At this location Muscatel Avenue is posted 25 mph.
Traffic Calm i ng Study prepared by RBF Associates:
The City re tai ned RBF to prepare a City-wide Traffic Calming Study in 2012. The subject
area, Muscatel Avenue: Las Tunas Drive to Camino Real is located in Focus Area B, as
shown below in the Traffic Calmin Master Plan.
LEGEND
Tier 1 Study Corridors
---Tier 2 Study Corridors
---Tier 3 Study Corridors
In the Traffic Calming Master Plan, Focus Area B addresses cut through traffic that
occurs west of Rosemead Boulevard. The Focus Area is bound by Longden Avenue to the
north and Garibaldi Avenue to the south; the segment is located on the western border
of the city. At the time traffic calming measures for this area were not being cons idered
since future improvements were to be implemented as part of the separate Rosemead
Boulevard Improvement Project. Focus Area B is entirely residential.
New Signal at Rosemead Boulevard and Garibaldi Avenue:
During prior public outreach events, the community identified that is was difficult to
make turns at Rosemead Boulevard and Garibaldi Avenue. This i ss ue is addressed with
ANALYSIS OF TRAF FIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUN AS DRIVE IN TEMPLE CITY PageS of 22
the installation of a new traffic signal at Rosemead Boulevard and Garibaldi Avenue as
part of the Rosemead Boulevard Project. Additional comments from the residents
indicated that cut through traffic occurs on Sultana Avenue, lvar Avenue and Reno
Avenue when Rosemead Boulevard is congested. No comments concerning the cut thru
traffic on Muscatel Avenue was brought up by residents at the prior public outreach
events.
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY
1
2
RADAR SPEED STUDY
The City completed a City Wide Engineering and Traffic Survey in 2010, which is a Radar
Speed Study.
A speed survey was performed along the segment of Muscatel Avenue between
Longden Avenue and Las Tunas Drive. The data from the study is as follows:
City ofTemple City: 2010 Radar Speed Survey for
Muscatel Avenue between Longden Avenue and las Tunas Drive
Dir. of 85th %ile Calculated Expected
Location Travel Date of Survey Speed Accident Rate Accident
Rate
Muscatel Avenue between
Longden Avenue and Las Tunas NB/ SB Apr 2010 36.3 0.728 1.98
Drive
As part of this current traffic study, additional radar speed measurements were
conducted in the field in February 2014 for the following segments:
• Segment 1: Muscatel Avenue between Longden Avenue and Garibaldi Avenue
(posted 35 mph)
• Segment 2: Muscatel Avenue between Garibaldi Avenue and Las Tunas Drive
(posted 35 mph)
Highway, traffic and roadside land uses were analyzed for conditions not readily
apparent to motorists. The hours of radar operation were restricted to off-peak periods
for heavily traveled streets, and to non-congested peak periods on lightly traveled
streets on a weekday.
The survey was conducted in clear weather. The radar measurements were taken from
an unmarked vehicle so as not to alter or impede the free flow of traffic. A total of 50
samples were obtained in each direction for each street segment surveyed.
The following table shows the speed survey results·
City of Temple City: 2014 Radar Speed Survey for
Muscatel Avenue between Longden Avenue and las Tunas Drive
Dir. of Date of 85 %ile 50%ile 10 Posted Limit per Location Travel Survey Speed Speed MPH Limit 85 %i!e Pace MPH
Muscatel Avenue between
Longden Avenue and NB/SB 02/24/14 36.3 32.4 29-38 35 35
Garibaldi Avenue
Muscatel Avenue between
Garibaldi Avenue and Las NB/SB 02/24/14 32.5 28.8 25-34 35 30
Tunas Drive
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY
Posted
Limit MPH
35
Proposed
speed
Limit
30
30
Page 7 of22
Muscatel Avenue between Longden Avenue and Las Tunas Drive is considered a local
road. Local roadways provide direct access to individual residential properties, schools
and churches typically with a posted speed of 25 mph. Through traffic on local streets
is usually discouraged. Local roads within residential and business district zones are not
subject to Speed Trap provisions and are posted at the Prima Facie speed limit.
Per eve Section 627, the Engineering and Traffic Survey states:
(a) "Engineering and traffic survey," as used in this code, means a survey of
highway and traffic conditions in accordance with methods determined by
the Department of Transportation for use by state and local authorities.
(b) An engineering and traffic survey shall include, among other requirements
deemed necessary by the department, consideration of all of the following:
(1} Prevailing speeds as determined by traffic engineering
measurements.
(2} Accident records.
(3} Highway, traffic, and roadside conditions not readily apparent to the
Driver.
(c) When conducting an engineering and traffic survey, local authorities, in
addition to the factors set forth in paragraphs (1) to (3}, inclusive, of
subdivision (b) may consider all of the following:
(1) Residential density, if any of the following conditions exist on the
particular portion of highway and the property contiguous thereto,
other than a bus iness district:
(A) Upon one side of the highway, within a distance of a quarter of
a mile, the contiguous property fronting thereon is occupied
by 13 or more separate dwelling houses or business structures.
(B) Upon both sides of the highway, collectively, within a distance
of a quarter of a mile, the contiguous property fronting
thereon is occupied by 16 or more separate dwelling houses or
business structures.
MUSCATEL Avenue MEETS THE CRITERIA OF A RESIDENCE DISTRICT
(C) The portion of highway is longer than one-quarter of a mile but
has the ratio of separate dwelling houses or business structures
to the length of the highway described in either subparagraph (A)
or (B).
(2} Pedestrian and bicyclist safety.
Amended Ch. 466, Stats. 1982. Effective January 1, 1983.
Amended Sec. 1, Ch. 45, Stats. 2000. Effective January 1, 2001.
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 8 of 22
Per CVe Section 22352 Prima Facie Speed Limits
( )6 (b) Twenty-five miles per hour:
( )3 (1} On any highway other than a state highway, in any business or residence
district (SEE CRITERIA ABOVE FOR RESIDENCE DISTRICT) unless a different
speed is determined by local authority under procedures set forth in this code.
If Muscatel Avenue is considered a Residence district, a 25 mph speed limit can be
imposed based on this designation and on the basis of an engineering and speed survey
signed by a registered engineer.
Prima facie speed limits are specified by statute or established by the State or local
authorities within their respective jurisdictions on the basis of an engineering and traffic
survey. Prima facie speed limits are specific limits stated in the eve or specific limits
established on the basis of an engineering and traffic survey authorized by the eve.
Prima facie speed limits are preempted by the basic speed limit law when the conditions
in CVC Section 22350 are met.
Local Authority to establish Prima Facie Speed Limits : Sections 22357 and 22358 of CVC
authorize local authorities to establish prima facie speed limits on streets and roads
under their jurisdiction on the basis of an engineering and traffic survey.
Per Section 2B.13 the CAMUTeD: Reduction of the 85th Percentile Speed can be
justified in an Engineering and Traffic Study and Approved by Civil or Traffic Engineer.
Standard:
12a: When a speed limit is to be posted, it shall be established at the nearest 5
mph increment of the 85th-percentile speed of free -flowing traffic, except as
shown in the Option below.
Option:
The posted speed may be reduced by 5 mph from the nearest 5 mph increment
of the 85th-percentile speed, in compliance with eve Sections 627 and 22358.5.
See Standard below for documentation requirements.
Standard:
12b : If the speed limit to be posted has had the 5 mph reduction applied, then
an E& TS shall document i n writing the conditions and justification for the lower
speed limit and be approved by a registered Civil or Traffic Engineer. The reasons
for the lower speed limit shall be in compliance with eve Sections 627 and
22358.5.
Support:
12c: The following example is provided to explain the application of this speed
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 9 of 22
limit criteria:
1. A. If the 85 %ile speed in a speed survey for a location was 37 mph, then
the speed limit would be established at 35 mph since it is the closest 5 mph
increment to the 37 mph speed. As indicated by the option, this 35 mph
established speed limit could be reduced by 5 mph to 30 mph if the
conditions and justification for using this lower speed limit are documented
in the E& TS and approved by a registered Civil or Traffic Engineer.
The fundamentals used to establish speed limits recognize that the majority of Drivers
behave in a safe and reasonable manner, but need to be advised of conditions which
may not be readily apparent. For this reason, collision history, roadway conditions,
traffic characteristics, and land use must be analyzed along with speed measurements
to determine speed limits. Speed limit changes are usually coordinated with visible
changes in roadway conditions or roadside developments.
In general, speed limits cannot be successfully enforced without voluntary compliance
by a majority of Drivers. Consequently, only the Driver whose behavior is clearly out of
line with the normal flow of traffic is considered a violator for enforcement purposes.
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 10 of 22
EXISTING AVERAGE DAILY TRAFFIC
Average Daily Traffic (ADT) data was obtained from counts taken by a private traffic
counting firm, in February 2014. These counts were taken on a Tuesday while school
was in session. Any unusual counts were checked and redone in order to verify the
amount of traffic each segment carries. The results are as follows:
Average Daily Traffic (ADT)
Location Vehicles per Day (vpd)
Muscatel Avenue: North of Las Tunas Drive 6,985 vpd
Muscatel Avenue: South of Hermosa Drive 5,993 vpd
Muscatel Avenue: South of Garibaldi Avenue 5,465 vpd
Muscatel Avenue: between Longden Avenue and 5,125 vpd
Garibaldi Avenue
In March of 2013 a resident complained that NB/SB vehicles on Muscatel Avenue who
were taking their children to school and picking them up in the afternoon were blocking
her street, Jaylee Drive, making it difficult to exit her street. At this time staff observed
traffic and conducted counts at this intersection. As part of this effort 24 Hour
automatic traffic counter machines and tubes were placed on each approach of
Muscatel Avenue on Tuesday March 5, 2013.
Table 1: Tube Counts -Muscatel Avenue, South of Jaylee Drive
NB Approach: 2,109
SB Approach: 1,932
Total ADT: 4,041
Observations found that the school Drop-off and pick-up for Emperor Elementary
effected traffic and parking along Muscatel Avenue. Parking along Muscatel Avenue and
Emperor Avenue was very heavy during these times. Also parents would travel on
Muscatel Avenue to enter the school site, north of Emperor Avenue to pick up students
and then exit on Emperor Avenue onto Muscatel Avenue. This phenomenon is shown in
the AM (8-9 AM) and the PM (2-3 PM) spike in north/south traffic.
The (6-7 PM) flow can be related to vehicles commuting N/S on Muscatel Avenue. At the
time, these numbers were used to determine if additional traffic control could be placed
at the intersection. It was found that this location did not meet Warrants for the
installation of all-way stop control. Any new traffic control device is guided by the
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 11 of22
California Manuel of Uniform Traffic Control (CAMUTCD) and the California Vehicle Code
(CVC).
The following summarizes the vehicle counts during the highest 8 hours of a given day.
VEHICLE COUNTS DURING THE HIGHEST 8 HOURS OF A GIVEN DAY ON MUSCATEL
AVENUE AT JAYLEE DRIVE
=Time NB Approach SB Approach Total N/S Approach (Highest 8 Hours)
7:00-8:00 am 72 109 181
8:00-9:00 am 151 249 400
9:00-10:00 am 114 129 243
10:00-11:00 am 91 99 190
2:00-3:00 pm 166 109 275
4:00-5:00 pm 179 133 312
6:00-7:00 pm 212 182 394
8:00-9:00 pm 101 43 144
*Vph: veh1cles per hour
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 12 of 22
ACCIDENT HISTORY
Accident data was obtained for Muscatel Avenue from Las Tunas Drive to Longden
Avenue from the computerized accident records system maintained by the State of
California Statewide Integrated Traffic Records System (SWITRS), and the LA County
Sheriff's Department. For this study, information available for the most recent 3 year
period was used to develop the accident statistics as a part of the Analysis. Accident
data was obtained for the years 2013, 2012, and 2011. Accident data in front of the
school was not available.
There were a total of 12 accidents on the Muscatel Avenue corridor over a 3 year
period. As seen in the accident summary, most of the accidents (7) occurred at the Las
Tunas Drive intersection (4) at or near Longden Avenue and (1) at or near Hermosa
Drive. One accident was related to excessive speed. This was south of Hermosa Drive in
2011, which is in the 35 mph segment of Muscatel Avenue.
2013-7 accidents
2012-2 accidents
2011-3 accidents
Accident Summary Table
Collision No Date Location Dist. Time
Type
Severity Factor
2013
1 09/27/13
las Tunas Drive at
I 13:50 Broadside PDO Veh traveling SB
Muscatel Avenue hit EB Veh
07/04/13 Las Tunas Drive at
I 20:52 Broadside INJ
Veh traveling EB 2 Muscatel Avenue hit WB veh
3 04/17/13 Las Tunas Drive at I 18:14 Sideswipe INJ Veh traveling WB
Muscatel Avenue hit EB veh
4 04/10/13 Las Tunas Drive at 45' N 18:17 Sideswipe PDO NB veh hit parked
Muscatel Avenue motor veh
5 03/26/13 Muscatel Avenue at 316' s 18:25 Sideswipe PDO NB veh hit parked
Longden Avenue motor veh
6 02/16/13 Longden Avenue at
I 18:35 Broadside INJ SB veh hit EB veh Muscatel Avenue
7 01/24/13 Muscatel Avenue at
I
Las Tunas Drive
10:00 Broadside INJ EB veh hit NB veh
2012
1 09/05/12 Longden Avenue at
I 16:20 Broadside INJ SB veh hit WB veh Muscatel Avenue
2 01/14/12 Las Tunas Drive at
I 10:48 Sideswipe PDO EB veh hit SB veh
Muscatel Avenue
2011
07/23/11 Las Tunas Drive at
I 8:15 Broadside INJ
EB RT veh hit SB 1 Muscatel Avenue veh
2 06/23/11 Muscatel at I Longden Avenue 18:40 Broadside PDO EB veh hit SB veh
ANALYSIS OF TRAFFIC CONDlTlONS ON MUSCATEl AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 13 of 22
Accident Summary Table
No I Date I Location I Dist. I Time I Collision
I Severity I Factor Type
2013
3 I 01/09/11 I Muscatel Avenue at I 25' 5 I 03:45 I Rear-end
I INJ I
NB thru veh hit
Hermosa Dnve Speed NB stopped veh
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 14of 22
TRAFFIC CALMING DEVICES AND STRATEGIES
There are various traffic calming measures that can reduce the flow and speed of traffic
on a street. Some of these are:
1) Traffic Education Campaign: This consists of flyers, neighborhood meetings,
banners and other notices to assist is making the public aware of the traffic
conditions in a certain area. The goal is to educate residents and non-residents
about basic traffic laws, speed limits and safety conditions near schools.
2) Signage and Striping: Modifying the signage along the road or changing the
striping to narrow travel lanes, effectively slows speeds by changing the travel
environment. Narrower lanes create "friction" and thereby cause Drivers to
travel at a slower pace. Signs alert the Driver to their speed, such as larger speed
limit signs or a radar feedback sign, or alert the Driver to a change in conditions
such as "Traffic Calming Zone Ahead:" signs.
Stop
• Larger Dimension Stop and Speed Limit Signs: Instal lation of striping, stop
signs, additional and larger speed limit signs, and striped speed limit
pavement legends . These are recommended as treatments to increase
the motorist's awareness and other Driver conditions by highlighting
various areas of the roadway. Speed limit signs and striped speed limit
pavement "messages," either used separately or as a combination, are
one of the most cost effective measures in increasing awareness of
motorists traveling through a neighborhood street. These two devices do
not have glaring negative impacts as far as air quality, emergency
response time, maintenance, and li ab ility exposure are concerned. All
sign dimensions should be in compliance with the dimensions specified in
the California Manual of Uniform Traffic Control Devices (CAMUTCD)
Table 2B-1 Regulatory Sign and Plaque Sizes. The larger sizes are shown in
the multi-lane column as: 36" x 36" for stop signs and 30" x 36" for speed
limits.
Table 28-1. Regulatory Sign an~-~La.!LU~-~izes (Sheet 1 of 4)
Convenl lonal Road I
Sign or Plaque Sign Sectlon Single: I Multi-~pres sway Freeway Minimum Oversized Designation
Lane Lane I
R1 -1 28 .05 30 x 30~ I 36 x 36 I 36 x 36 -30 x3o· 48 x48
ll sp eed Limit R2-1 I I 2B.13 II 24~3o·1 I 3ox3s I : 36x 4a I 4a x so I ta x 24' I 3ox3e II
I I
L-------'
CAMUTCD Section 2A.11 Sign Dimensions prescribes design details for up to five
different sizes depending on the type of traffic facility, including bikeways . Smaller sizes
are d es igned to be used on bikeways and some other off-road applications. Larger sizes
ANAlYSIS OF TRAFFIC CONDITIONS ON MUSCATEl AVENUE BETWEEN LONGDEN AVENUE AND lAS TUNAS DRIVE IN TEMPlE CITY Page 15 of 22
are designed for use on freeways and expressways, and can also be used to enhance
road user safety and convenience on other facilities.
The sign dimensions prescribed in the sign size tables, in the "Standard Highway Signs
and Markings" book (Section 1A.11) shall be used unless engineering judgment
determines that other sizes are appropriate.
The sizes shown in the Oversized columns in the various sign size tables in this Manual
should be used for those special applications where speed, volume, or other factors
result in conditions where increased emphasis, improved recognition, or increased
legibility is need ed, as determined by engineering judgment or study. Increases above
the prescribed sizes should be used where greater legibility or emphasis is needed. If
signs larger than the prescribed sizes are used, the overall sign dimensions should be
increased in 6-inch increments.
Standard:
Where engineering judgment determines that sizes that are different than the
prescribed dimensions are appropriate for use, standard shapes and colors shall be used
and standard proportions shall be retained as much as practical.
• Radar Feedback Signs: Radar feedback signs are
an effective way to alert Drivers of their speed.
A portable sign surveys the speed of each
passing vehicle and displays the speed
information on a board next to the posted
speed limit. The sign is used as passive
enforcement to inform Drivers of their travel
speed. They can be affixed to street light poles
and run on solar po wer or small battery packs .
Relocating the radar feedback signs on a
regular basis will reduce the potential for
Drivers to become accustomed to the signs and ignore them. It also
allows the City to relocate the signs as necessary to address community
concerns over speed issues throughout the City.
• Striping: To aid in slowing through traffic, a white stripe is painted along
both sides of the travel way to give the Driver a perception of a narrower
road. This has been used in adjacent cities and in documented surveys
(traffic calming sources 1 ) this has shown to be an effective device for
reducing travel spe eds.
1 Guide f o r the Planning, Design and Operation of Pedestrian Facilities. AASHTO, July 2004 and PEDSAFE:
Pedestrian Safety and Countermeasures Sel ecti on System, USFHWA, 2004
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 16 of 22
an f-'xtJrnnw
sides of a travel way, this example is along Almansor north of Bay
State Looking North in the City of Alhambra.
3) High Visibility Crosswalks: Higher visibility paint can be created by signing either
paving blocks or color concrete or painting crosswalks with the vertical "zebra"
stripes. The goal is to increase crosswalk visibility to Drivers.
4) Targeted Police Enforcement: The police department deploys officers to perform
enforcement on residential streets for at least an hou r a day. The goal i s to make
Drivers aware of the speed limits and reduce speeds .
5) Gateway Entrance : These treatments consist of a physical change to streets that
are located at key entry ways into a neig hborhood. They consist of chokers that
help to narrow a streets r ight of way. The goal of gateways is to remind Drivers
that they are entering a local residential area.
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 17 of 22
RECOMMENDATIONS
1) The speed limit along the subject corridor (Muscatel Avenue between Longden
Avenue to Las Tunas Drive) should be reduced by 5 mph from 35 mph to 30 mph.
Per the California Manual of Uniform Traffic Control Devices (CAMUTCD), when a
speed limit is to be posted, it shall be established at the nearest 5 mph
increment of the 85th-percentile speed of free -flowing traffic, except as shown
in the Option below. The posted speed may be reduced by 5 mph from the
nearest 5 mph increment of the 85th-percentile speed, in compliance with eve
Sections 627 and 22358 .5. If the speed limit to be posted has already had the 5
mph reduction applied, then an E&TS shall document in writing the conditions
and justificat ion for the lower speed limit and be approved by a registered Civil
or Traffic Engineer. The reasons for the lower speed li mit shall be in compliance
with eve Sections 627 and 22358.5. A 5 mph reduction in posted speed limit is
justified by the field survey and eve and CAMUTCD guidelines. This
recommendation will require City Council approval.
2) All Stop Signs (Rl-1) al ong the subject corridor in the north-south direction (on
Muscatel Avenue between Longden Avenue and Las Tunas Drive) to be rep l aced
with larger stop signs in compliance with the dimensions specified in the
California Manua l of Uniform Traffic Control Devices (CAMUTCD) Table 2B-1
Regulatory Sign and Plaque Sizes under the multi-lane column (36" x 36").
3) All speed limit signs (R2-1) installed and or replaced along the subject corridor
(on Muscatel Avenue between Longden Avenue and Las Tunas Drive) to be
oversized speed limit signs in compliance with the dimensions specified in the
California Manual of Uniform Traffic Control Devices (CAMUTCD) Table 2B-1
Regulatory Sign and Plaque Sizes under the multi-lane column (30" x 36").
Table 28-1. Regulatory Sign an.steLa.5lu_e_~izes (Sheet 1 of 4)
ConvenJional Road I
Sign or Plaque Sign
Designation Section Single: Multi-~pressway Freeway Minimum Overs ized
Lane Lane I
Stop R1-1 28.05 30 )( 30~ 36x36 I 36 x36 -30 x30' 48x48
Speed Limit R2-1 26 .13 30x 31'1 24 )( 30'1 1 36 x48
I I
48 X 80 18 X 24' 30 K 36
I I
L-------'
Larger dimension signs per the CAMUTCD Section 2A.ll Sign Dimensions
prescribes design details for up to five different sizes depending on the type of
traffic facility, including bikeways.
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE A N D LAS TUNAS DRIVE IN TEMPLE CITY Page 18 of 2 2
4) Install speed limit signs and stop ahead signs at locations shown on the attached
diagrams for NB and SB between Longden Avenue and Las Tunas Drive. See
aerial of sign locations at the end of the report for each segment.
5) Repaint existing crosswalks and stop bars where noted on the attached
diagrams.
6) Install solid white side stripe along the segment of Muscatel between Longden
Avenue and Garibaldi Avenue on both sides, 8' from curb face. See attached
diagrams.
a. Striping is used to aid in slowing through traffic, a white stripe is painted
along both sides of the travel way to give the Driver a perception of a
narrower road. This has been used in adjacent cities and in documented
surveys (traffic calming sources 2
) this has shown to be an effective device
for reducing travel speeds.
The following diagrams show the proposed improvements of Traffic Calming measures
along Muscatel Avenue.
2 Guide for the Planning. Design and Operation of Pedestrian Facilities, AASHTO, July 2004 and PEDSAFE:
Pedestrian Safety and Countermeasures Selection System, USFHWA, 2004
............................ ,,, ___________ _
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 19 of 22
EXISTING : Yellow "SC HOOL"
legend a nd schoo l signs (Sl-1
signs) in th e SB direction
SHOWN AS REFERENCE
CONDITIONS NORTH OF LONGDEN AVENUE
EXISTING: Stop ahead si gn (W3 -1) and "STO P
A HE AD " pavement l egend in the SB direction
EXISTING : Ye llow crosswalk in north l eg at all
way stop.
EXISTING: Stop ahead sign (W3 -1) and "S TOP
A HEA D" pavement legend in the NB direction
EXISTING : Ye llow "S CHOOL"
lege nd a nd sc h ool sign s (Sl-1
signs) i n the NB d irection
EXISTING: Existing 25 m ph sig n an d
pav em ent lege nd in theN B direction
EXISTING: Stop ah ea d si gn (W3-l) an d "STOP
AHEAD" pavement legend in the SB direc tion
MATCH LIN E-SEE NEXT PAGE
next page f or imp rovements at M
and Lo ngden Ave .
ANALYSI S OF TRAFF IC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS D RIVE I N TE MPLE CITY Page 20 of 22
SEGMENT 1: MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND GARIBALDI AVENUE
~
MATCH LINE-SEE PREVIOUS PAGE
NG: All-way stop wit h crosswalks (white
n the south, east, and west legs.
ROPOSED: Repaint stop bars, crosswa lks an
ent legends . Replace north-south d
(Rl-1) with l arger 36" x 36" sto
G: 35 mph sign in the SB direction.
IPR,OPIOSI=D : Remove existing 35 mph sign, an
II new 30 mph (30" x 36") sign and legen
the SB direction.
irect ion (sign is old and not reflectorized).
ROPOSED: Remove existing sign. Install
d sign (W3-1) and legend in the
irecti o n. (appr. 250' south of Lon gden Ave).
ROPOSED: Install solid white side stripe alon
e segment of Muscatel Ave betw
gden Ave and Garibaldi Ave on both si
m curb face.
30 mph sign s (30" x 36"
legends in NB and SB directions i
block between Longden Ave and Garibal 1
: Install Stop ahead sign (W3-1) an
end in the SB direction . (appr. 250' north
ROPOSED: Install 30 mph sign (30" x 36") a
legend in NB direction.
MATCH LINE-SEE NEXT PAGE
next page for improvem ents at Mu
and Garibaldi Ave
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 21 of 22
SEGMENT 2: MUSCATEL AVENUE BETWE EN GARIBALDI AVENUE AND LAS TUNAS DRIVE
MATCH LINE-SEE PREVIOUS PAGE
!STING: All -way stop, no crosswalks.
ROPOSED: Repaint stop bars, and paveme
egends. Replace north-s outh dir stop
Rl-1) with larg er 36" x 36" stop signs.
!STING: 35 mph sign in SB direction ..
ROPOSED : Remove existing 35 mph sign an
II new 30 mph (30" x 36") and legend i
PROPOSED: Install 30 mph signs (30" x 36")
and legend in NB direction
!STING: All-way stop, no crosswalks.
ROPOSED: Repaint stop bars, and paveme
egends. Replace north -south dir stop
Rl-1) with larger 36" x 36" stop sig n s.
ROPOSED: In sta ll 30 mph signs (30" x 36"
d legend in SB direction .
EXISTING: 35 mph sign in NB direction ..
PROPOSED : Remove existing 35 mph sign and
install new 30 mph (30" x 36") and legend in
NB direction.
ISTING: Signal at Las Tunas and Muscatel.
ANALYSIS OF TRAFFIC CONDITIONS ON MUSCATEL AVENUE BETWEEN LONGDEN AVENUE AND LAS TUNAS DRIVE IN TEMPLE CITY Page 22 of 22