ORDINANCES AND RESOLUTIONS City Council
September 22, 2026
TO: Mayor and City Council
FROM: Jeff Boynton, City Manager
ORIGINATED BY: Anne Haraksin, Assistant City Manager
SUBJECT: RESOLUTION NO. 26-26 APPROVING THE INSTALLATION OF
TRAFFIC SIGNALS AT THE INTERSECTION OF ROSECRANS
AVENUE AND STANTON AVENUE
BACKGROUND
At the Public Safety and Traffic Commission meeting on February 26, Pablo Mejia expressed concerns regarding traffic safety and vehicles exceeding the speed limit at Rosecrans Avenue and Stanton Avenue. On March 3, the City received a request via the My La Mirada app for the installation of traffic signals at Rosecrans Avenue and Stanton Avenue. This request was also discussed by several residents on social media. At the Public Safety and Traffic Commission meeting on April 23, the Commission approved a traffic study of the location to determine if the installation of traffic signals was warranted.
FINDINGS
The Traffic Engineer studied the intersection of Rosecrans Avenue and Stanton Avenue Below is an aerial map of the location.
Algecitas Dr
Algeciras Dr
Algeciras Dr Dunnet Ar
Rosecrans Ave
Rosecrans Ave
Rosecrans Ave Rosecrans
Stanton Ave Rosecrans Ava
Formby Dr
Formby Dr
Exhibit A - Aerial Map
AGENDA NO. 8.1
Resolution No. 26-26
City Council Meeting of September 22, 2026
Existing Conditions
Stanton Avenue is defined in the City's General Plan - Circulation Element as a local/residential road providing convenient access to bordering neighborhoods to the north and south of the intersection as well as Eastwood Elementary School and El Camino High School (Los Coyotes Athletic Fields). As a local road, Stanton Avenue has a posted speed limit of 25 MPH and is stop controlled in the northbound and southbound approaches at Rosecrans Avenue.
Rosecrans Avenue is defined in the City's General Plan - Circulation Element as a major arterial road serving two lanes of travel in both the east and west directions. Rosecrans Avenue has a posted speed limit of 45 MPH. Due to the intersection's proximity to two schools, the posted school speed limit is 25 MPH between Beach Boulevard and Santa Gertrudes Avenue when students are present. In addition to the modified speed limit, the intersection has painted yellow crosswalks on the north, west, and south legs along with appropriate usage of the "School Advance Crossing Assembly" ahead of the crossing and "School Crossing Assembly" at the painted crosswalks.
School Advance School Crossing
Crossing Assembly Assembly
S1-1 S1-1
AHEAD W16-9P K W16-7P
Exhibit B: School Crossing Assemblies
Speed Survey
Methodology:
Traffic speed data was collected on March 12, 2026 for vehicles traveling on Rosecrans Avenue and Stanton Avenue (Attachment "A"). A summary of the speeds is provided ir Table 1 - Traffic Data Summary below. The data is separated into 85th percentile speed mean speed (average speed), 10 MPH pace speed, number of vehicles in the pace speed, and percent of vehicles in the pace speed. Definitions of each term are as follows:
85th Percentile Speed:
The 85th percentile speed is the speed at or below which 85 percent of the motorists drive on a given road, unaffected by slower traffic or poor weather. This speed indicates the speed that most motorists on the road consider safe and reasonable under ideal conditions. It is considered reasonable guideline for setting the appropriate speed limit for that road.
Mean Speed (Average Speed):
The average, or arithmetic mean speed characterizes the speed observations in a single number and is calculated by dividing the summation of all observed speeds by the number of observations.
2 Resolution No. 26-26
City Council Meeting of September 22, 2026
10 Mile per Hour Pace Speed:
The 10-mile per hour pace speed is defined as the range in which the largest number of observations falls. Normally, 60% - 70% of vehicles drive within the 10 mile per hour pace speed.
Number/Percent of Vehicles in the Pace Speed:
Of the total number/percent of vehicles observed during the data collection, this is the number of vehicles that fell within the 10 MPH pace speed.
Table 1 - Traffic Data Summary
85th 10 MPH
Mean Speed Number in % in
Direction of Travel Percentile Pace Speed
(MPH) Pace Pace
(MPH) (MPH)
Rosecrans Avenue West of Stanton Avenue - 3/12/2026
Eastbound 49 45 41-50 6584 69.2
Westbound 48 43 36-45 5436 57.3
Combined 49 44 41-50 11738 61.7
As shown in Table 1, the 85'h percentile speed of vehicles traveling on Rosecrans Avenue in combined observations is 49 MPH, meaning 85% of all vehicles recorded drive a speed of 49 MPH or lower. With a posted speed limit of 45 MPH along Rosecrans Avenue, an expected range of speeds would be 1-55 MPH. According to this expected range, the 85th percentile speed is within the expected range.
Table 2 - Rosecrans Avenue Analysis Table
1-55 MPH 56+ MPH Total Combined
Time of Day
EB WB EB WB EB WB Total
Rosecrans Avenue West of Stanton Avenue - 3/12/2026
12:01AM to 7:00AM 584 48 59 49 643 803 1,446
7:01AM to 9:00AM 1,292 226 24 13 1,316 1,420 2,736
9:01AM to 11:00AM 943 101 23 10 966 978 1,944
11:01AM to 4:00PM 2,786 253 76 66 2,862 2,620 5,482
4:01PM to 6:00PM 1,622 170 30 28 1,652 1,369 3,021
6:01PM to 12:00AM 2,006 271 75 64 2,081 2,301 4,382
Directional Totals 9,233 1,069 287 230 9,520 9,491 19,011 3 Resolution No. 26-26
City Council Meeting of September 22, 2026
Total 18,494 517 19,011
Table 2 summarizes the data into eastbound and westbound traffic speeds grouped by speed category and various peak periods along with totals for both directions along Rosecrans Avenue. There is a total of 19,011 vehicles recorded with 18,494 (97%) falling into the expected range of 1-55 MPH and 517(3%) falling outside of the expected range.
Traffic Signal Warrant
The CA MUTCD provides a set of studies and factors that help justify the installation of traffic signals at any given location. These eight studies and factors are referred to as warrants in the CA MUTCD. Satisfying one or more of the warrants does not solely justify the installation of a traffic signal nor does it override all other considerations. Agencies should verify that the installation of traffic signals is the best solution for improving overall safety and operation at the intersection. Table 3 below summarizes the results of the eight warrants.
Table 3 - Traffic Signal Warrant Analysis
Warrant Yes No N/A
Warrant 1 - 8 Hour Volume
Warrant 2 - 4 Hour Volume x
Warrant 3 - Peak Hour X
Warrant 4 - Pedestrian Volume X
Warrant 5 - School Crossing X
Warrant 6 - Coordinated Signal System X
Warrant 7- Crash Experience Warrant
Warrant 8 - Roadway Network
Warrant 9 - Intersection Near a Grade Crossing x
Warrant 2 of the analysis is intended in applications where the major road traffic volume causes a delay or operation to the minor road. The CA MUTCD provides the following guidance and applicable curve regarding this warrant:
Section 4C.03 Warrant 2, Four-Hour Vehicular Volume
02 The need for a traffic control signal should be considered if an engineering study finds that, for each of any 4 hours of an average day, the plotted points representing the vehicles per hour on the major street (total of both approaches) and the corresponding 4 Resolution No. 26-26
City Council Meeting of September 22, 2026
vehicles per hour on the more critical minor-street approach (one direction only) all fall above the applicable curve in Figure 4C-1 for the existing combination of approach lanes.
Figure 4C-1. Warrant 2, Four-Hour Vehicular Volume
500
2 OR MORE LANES & 2 OR MORE LANES
400
1 MAJOR-STREET LANE &
MINOR 2 OR MORE MINOR-STREET LANES
STREET 300
MORE
CRITICAL
APPROACH - 200
VPH
1 LANE & 1 LANE 1 115*
100 80*
2 OR MORE MAJOR-STREET LANES
& 1 MINOR-STREET LANE
300 400 500 600 700 800 900 1000 1100 1200 1300 1400
MAJOR STREET—TOTAL OF BOTH APPROACHES-
VEHICLES PER HOUR (VPH)
Exhibit C - CA MUTCD Figure 4C-1
The following Exhibit D is taken from the completed traffic signal warrant worksheet included in Attachment "B" and uses traffic volume data collected on April 21, 2026.
WARRANT 2 - Four Hour Vehicular Volume SATISFIED* YES X NO D Record hourly vehicular volumes for any four hours of an average APPROACH LANES One More /Hour
Both Approaches - Major Street x 1109 1410 1601 1763
Higher Approach - Minor Street 134 121 164 | 131
*All plotted points fall above the applicable curve in Figure 4C-1. (URBAN AREAS Yes X No OR, All plotted points fall above the applicable curve in Figure 4C-2. (RURAL AREAS Yes O No Exhibit D - Traffic Signal Warrant 2 - Four Hour Vehicular Volume As completed, the intersection of Rosecrans Avenue and Stanton Avenue may warrant the installation of a traffic signal through the second warrant. A satisfied warrant does not automatically indicate the requirement of the installation of a traffic signal. Other factors such as signal coordination and collision data can influence the necessity of signalization.
Conclusion
5 Resolution No. 26-26
City Council Meeting of September 22, 2026
Vehicle data along Rosecrans Avenue at Stanton Avenue was collected in March and April of 2026 to analyze the speed and volume of cars passing through the intersection.
Vehicles travelling through the intersection were found to be moving at an 85 percentile speed of 49 MPH, which while high, is within the expected range of 1-55. Additionally, using the recorded traffic volume data along with guidance from the CA MUTCD's Traffic Signal Warrant Analysis criteria, the intersection triggers the second warrant, "4-Hour Volume" and justifies the installation of traffic signals at the intersection.
At the Public Safety and Traffic Commission meeting on August 27, the Commission unanimously approved the installation of traffic signals at the location.
RECOMMENDED ACTION
It is recommended the City Council adopt Resolution No. 26-26 approving the installation of traffic signals at the intersection of Rosecrans Avenue and Stanton Avenue.
ATTACHMENT A
Counts Unimited, Inc. Page 1
City of La Mirada PO Box 1178
Rosecrans Avenue Corona, CA 92878
W/ Stanton Avenue (951) 268-6268 LMD001
24 Hour Directional Speed Survey email: [email protected] Site Code: 237-26222 Eastbound
Start 16 21 36 41 46 76
Time 25 45 99!
03/12/26
01:00
02:00 CLONE
03:00
04:00
05:00
06:00 101
07:00 265 176
08:00 265 664
09:00 199 150 504
10:00 175 152 462
11:00
12 PM
13:00
14:00
15:00 11
16:00 18 00-NO 00000000000
17:00 10
18:00
19:00
20:00
21:00
22:00
23:00
Total 141 23
Daily 15th Percentile: 39 MPH
50th Percentile : 44 MPH
85th Percentile : 49 MPH
95th Percentile: 54 MPH
Statistics Mean Speed(Average) :
Number of Vehicles > 55 MPH:
Percent of Vehicles > 55 MPH:
Counts Unimited, Inc. Page 2
City of La Mirada PO Box 1178
Rosecrans Avenue Corona, CA 92878
W/ Stanton Avenue (951) 268-6268 LMD001
24 Hour Directional Speed Survey email: [email protected] Site Code: 237-26222 Westbound
Start 16 46
Time 25 99
03/12/26
01:00 120000 10888
02:00
03:00
04:00
05:00 168
06:00 388
07:00 OLO OOO ONTO 0 0 0 0 0 00
671
08:00 749
09:00 • O 513
10:00 465
11:00 moon
12 PM 10010NON10100010000W000008 • • =
13:00 551
14:00 547
15:00 597
16:00 697
17:00 672
18:00 690
19:00 575
20:00 WO -0000O 417
21:00
22:00
23:00
Total 19 31
Daily 15th Percentile: 35 MPH
50th Percentile : 42 MPH
85th Percentile : 48 MPH
95th Percentile : 53 MPH
Statistics Mean Speed(Average) : 43 MPH
10 MPH Pace Speed : 36-45 MPH
Number in Pace: 5436
57.3%
Number of Vehicles > 55 MPH: 230
Percent of Vehicles > 55 MPH: 2.4%
Counts Unimited, Inc. Page 3
City of La Mirada PO Box 1178
Rosecrans Avenue Corona, CA 92878
W/ Stanton Avenue (951) 268-6268 LMD001
24 Hour Directional Speed Survey email: [email protected] Site Code: 237-26222 Eastbound, Westbound
16 41 46 61 81 76
15 50 65
112
112 206 200
18 290 479 304
15 OANO 319 513 346
12 188 369 272
185 354 927
VO-WONON A 10110000000000d
1050
1181
1313
11 27808028483388
Total 170 19 1701
Daily 15th Percentile:
50th Percentile :
85th Percentile:
95th Percentile :
Statistics Mean Speed(Average) : 44 MPH
10 MPH Pace Speed : 41-50 MPH
Number in Pace :
Percent in Pace : 61.7%
Number of Vehicles > 55 MPH:
Percent of Vehicles > 55 MPH: 2.7%
ATTACHMENT B
Counts Unlimited, Inc. Page 1
City of La Mirada PO Box 1178
N/S: Stanton Avenue Corona, CA 92878
EV: Rosecrans Avenue (951) 268-6268 LMA001NS
24 Hour Entering Volume Counts email: [email protected] Site Code: 237-26328 Date Start: 4/21/26
Start 4/21/26 Northbound Hour Totals Southbound Hour Totals Combined Totals Time Tue Afternoon Morning Afternoon Morning Afternoon Morning Afternoon 12:00 Morning
12:15
12:30 0
12:45 40 0 2 2 54
01:00
01:15 5
01:30
01:45 11 49 0 9 23 72
02:00 20 11
02:15 0 29 0 9
02:30 1 21 10
1 95 39 1 134
3 18 4 23 7 121
17 131 8 33 25 164
18 110 22 21 40 131
40 42 82 113
94 51 49 13 143
08-
08:15
08:30
08:45 88 27 24 10 112 37
09:00
09:15
09: :30
09:45 55 26 25 17 80 43
10:00
10:15
10:30
10:45 15 54 12 26 80 18
11:00 9 9
11:15 21
11:30 17
11:45 13 60 5 21 3 81 8
Total 430 730 430 730 223 229 223 229 653 959
Combined 1160
Total 1160 452 452 1612
AM Peak 07:30 07:00
Vol. : 123 : : : :
49 P.H.F. 0.715 0.557
PM Peak : 04:15 01:45
Vol. 141 : : : : : : :
39 P.H.F. 0.881 0.886
Percentag 37.1%
62.9% 49.3% 50.7%
ADT/AADY ADT 1,612 AADT 1,612
Counts Unlimited, Inc. Page 1
City of La Mirada PO Box 1178
N/S: Stanton Avenue Corona, CA 92878
EN: Rosecrans Avenue (951) 268-6268 LMA001EW
24 Hour Entering Volume Counts email: [email protected] Site Code: 237-26328 Date Start: 4/21/26
Start 4/21/26 Eastbound Hour Totals Westbound Hour Totals Combined Totals Time Tue Morning Afternoon Morning Afternoon Morning Aftern Morning Afternoon Morning Afternoon 128 14
11 106 16
15 127 8
121 42 482 11 49 502 91 984
5 121 8
6 130 9
124 8
157 24 532 28 553 52 1085
8 125 10
6 24 528 7 31 581 55 =7109
31 716 35 694 66 1410
73 857 92 744 165 1601g
131 905 188 858 319 1763
309 697 463 730 772 1427
188
238
674 464 286 880 577 1554 1041
220
233
240
706 312 883 460 1589 772
486 230 562 376 1048 606
443 119 110 482 173 925 292
128
115
104
443 72 135 482 109 925 181
3386 5914 4175 4175 6357 7561 12271
Cor
9300 9300 10532 10532 19832
: 07:30 : 07:45
793 : 979 : : : : :
0.949 0.856
: 04:30 : 04:45
Vol. : 927 : : 862 : : : :
P.H.F. 0.946 0.949
Percentag 36.4%
e 63.6% 39.6% 60.4%
ADT/AADT ADT 19,832 AADT 19,832
RESOLUTION NO. 26-26
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LA MIRADA
AUTHORIZING THE INSTALLATION OF TRAFFIC SIGNALS AT THE
INTERSECTION OF ROSECRANS AVENUE AND STANTON AVENUE
A. Recitals.
(i) The La Mirada City Council finds that because of traffic conditions in the vicinity of Rosecrans Avenue and Stanton Avenue, certain traffic improvements are necessary and desirable.
(ii) The Traffic Engineer has evaluated field conditions and determined that for the benefit of public safety it is recommended that traffic signals be installed at the intersection of Rosecrans Avenue and Stanton Avenue. (iii) At its regular meeting of August 27, 2026, the La Mirada Public Safety and Traffic Commission reviewed field conditions and reports prepared by the City's Traffic Engineer and recommends that the indicated improvements be approved.
(iv) All prerequisites to the adoption of this Resolution have occurred.
B. Resolution.
NOW, THEREFORE BE IT FOUND, DETERMINED AND RESOLVED as
follows:
The facts set forth in the Recitals, Part A, of this Resolution, are true and correct.
2. The City Council of the City of La Mirada hereby authorizes the installation of traffic signals at the intersection of Rosecrans Avenue and Stanton Avenue.
PASSED, APPROVED AND ADOPTED this 22nd day of September 2026.
Anthony A. Otero, Mayor
Resolution No. 26-26
September 22, 2026
ATTEST:
1, Leticia Revilla, City Clerk of the City of La Mirada, do hereby certify that the foregoing Resolution No. 26-26 was adopted at a regular meeting of the City Council of the City of La Mirada held on the 22nd day of September, 2026, by the following vote:
AYES:
NOES:
ABSENT:
ABSTAIN:
Leticia Revilla, City Clerk
2