2024 Engineering & Traffic Survey - Jefferson St (Sept 23)WW I L L DA N extending
your
Engineering reach
October 2, 2024
County of Riverside Superior Courts
Larson Justice Center
46-200 Oasis Street
Indio, CA 92201
SUBJECT: 2024 Engineering and Traffic Survey
City of La Quinta
Dear Larson Justice Center / County of Riverside Superior Courts,
California Vehicle Code Sections 40801 and 40802 require Engineering and Traffic Surveys (ETS) to
establish or revise prima facie speed limits on certain streets within a local jurisdiction before law
enforcement can utilize radar or other electronic speed measuring devices for speed enforcement. These
surveys must be updated every five, seven, or ten years to ensure the speeds reflect current conditions as
dictated by the California Vehicle Code. The surveys can be extended from 5 to 7 years provided the
City's police officer(s) have completed a 24-hour radar operator course [CVC 40802(c)(2)(B)(i)(I)].
Additionally, some surveys may be extended to fourteen years if the City Traffic Engineer certifies there
have been no significant changes to the roadway segment(s) or traffic conditions [CVC
40802(c)(2)(B)(i)(II)]. These provisions assure that posted speed limits are kept reasonably current.
This letter is to certify that I am the licensed and duly designated Traffic Engineer for the City of La
Quinta. I have evaluated six street segments that are part of the 2024 ETS. Attached is the resolution
adopting new speed limits and a copy of the E&T Study. Therefore, based on the above reasons, the
most recent Engineering and Traffic Survey shall be effective 30 days after the adopted date of the
particular ETS conducted for the following six street segments:
• Jefferson Avenue from Dunbar Drive to Fred Waring Drive— 45 mph
• Jefferson Avenue from Fred Waring Drive to Miles Avenue — 45 mph
• Jefferson Avenue from Miles Avenue to Westward Ho Drive — 45 mph
• Jefferson Avenue from Westward Ho Drive to Hwy 111 — 45 mph
• Jefferson Avenue from Hwy 111 to Avenue 48 — 50 mph
• Jefferson Avenue from Avenue 48 to Avenue 50 — 50 mph
If you have any questions, you may contact Mr. Bryan McKinney, Public Works Director at (760) 777-
7045 or myself, at (562) 364-8526.
Sincerely,
Nicolle Spann, P.E., T.E.
Traffic Engineer
leg ESS/
S Sot.
Icy -1-
No. 91787
IVO,
of CAI-!
i.%QFESS!
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TR 2933
9j •AFF�G
up c AL\
Engineering I Geotechnical 1 Environmental I Sustainability I Financial I Homeland Security
562.908.6200 1800.499.4484 I tax: 562.695.2120 113191 Crossroads Parkway North, Suite 405, Industry, CA 91746-3443 I www.willdan.com
City of La Quinta
Engineering and Traffic Survey Extension
October 2, 2024
Cc: City Attorney
City Clerk
Riverside County Sheriff's Department
2
September 23, 2024
Mr. Bryan McKinney, P.E.
City Engineer
Public Works Department
City of La Quinta
78-495 Calle Tampico
La Quinta, CA 92253
W'vvi LLDAN
Subject: 2024 Engineering and Traffic Survey – Jefferson Street
Dear Mr. McKinney:
As requested, Willdan has completed a review of the recommended speed zones on one
segment of Jefferson Street in the City of La Quinta. The Engineering and Traffic Study
dated January 5, 2017, is hereby amended to include the updated speed limit for the
segments listed below that supersede the pervious speed limit recommendations.
31 — Jefferson Street —
32 — Jefferson Street
58 — Jefferson Street
33 — Jefferson Street
34 — Jefferson Street
35 — Jefferson Street
Dunbar to Fred Waring
— Fred Waring to Miles
— Miles to Westward Ho
— Westward Ho to Hwy 111
— Hwy 111 to Avenue 48
— Avenue 48 to Avenue 50
We are pleased to submit the enclosed recommendation and supporting documentation
for the above segment. The Engineering and Traffic Survey for the above segments were
conducted in accordance with applicable provisions of the CVC, following procedures
outlined in the California Manual on Uniform Traffic Control Devices (California MUTCD)
dated November 2014, and as required by Section 627 of the California Vehicle Code.
The Report is intended to satisfy the requirements of Section 40802 of the CVC to enable
the continued use of radar for traffic speed enforcement.
We appreciate the opportunity to serve the City of La Quinta, and the assistance and
cooperation afforded to us during the course of this study.
Very truly yours,
WILLDAN
Nicolle Spann, P.E., T.E.
Traffic Engineer
Enclosure
Engineering and Planning 1 Energy Efficiency and Sustainability Financial and Economic Consulting 1 National Preparedness and Interoperability
562.908.8200 1 800.499.4484 1 fax: 562.695.2120 1 13191 Crossroads Parkway North, Suite 405, Industry, California 91746-3443 1 www.willdan.com
2024 Engineering and Traffic Survey Amendment
City of La Quinta
Page 2
Table 1
Street Segments with Recommended Speed Changes
NO STREET
FROM
TO
POSTED
SPEED
LIMIT
NEW
POSTED
SPEED
LIMIT
CHANGE
31 Jefferson Street
Dunbar
Fred Waring
55
45
10 mph reduction
32 Jefferson Street
Fred Waring
Miles
50
45
5 mph reduction
58 Jefferson Street
Miles
Westward Ho
55
45
10 mph reduction
33 Jefferson Street
Westward Ho
Hwy 111
55
50
5 mph reduction
34 Jefferson Street
Hwy 111
Avenue 48
55
50
5 mph reduction
35 Jefferson Street
Avenue 48
Avenue 50
55
50
5 mph reduction
2024 Engineering and Traffic Survey Amendment
City of La Quinta
Page 2
* See "Segments with Special Conditions" Section for Comments
2024 Engineering and Traffic Survey Amendment
City of La Quinta
Page 3
Table 2
Speed/Collision Data Summary Table
ID Street
Segment
Dist.
(Mi.)Speed
Dir.ADT
85% 10 Mi. % in
Pace Pace
Accident Rate
Posted
Speed
Limit
Prop.
Speed
Limit
Remarks
Exp.
Act.
31 Jefferson Street
Dunbar to Fred
WaringOption
.49
N/S
49.5
41-50
69.7
33,300
1.17
0.81
55
45
CA MUTCD
2
32 Jefferson Street
Fred Waring to
Miles
50
N/S
49.8
42-51
61
33,850
1.17
0.55
50
45
CA MUTCD
Option 2
58 Jefferson Street Miles to
Westward Ho
.50
N/S
51.4
40-49
59.1
29,850
1.17
0.33
50
45
Safety
Corridor
33 Jefferson Street
Westward Ho to
Hwy 111
49
N/S
50.0
42-51
87.0
24,330
1.17
0.76
55
45
34 Jefferson Street
Hwy 111 to
Avenue 48
.51
N/S
51.7
44-53
65.5
26,550
1.17
0.57
55
50
Closest to 85th
Speed
35 Jefferson Street
Avenue 48 to
Avenue 50Speed
.49
N/S
52.7
42-51
60.8
23,700
1.17
0.21
55
50
Closest to 85th
* See "Segments with Special Conditions" Section for Comments
2024 Engineering and Traffic Survey Amendment
City of La Quinta
Page 3
SEGMENTS WITH SPECIAL CONDITIONS
The following segments surveyed had recommended speed limits that were 5 miles per
hour (mph) or more below the critical speed due to conditions not readily apparent to the
driver. Each segment is discussed below.
Segment 33 — Jefferson Street — Westward Ho to Highway 111
This segment is currently posted at 55 mph and has three through lanes in each direction
with an ADT of 24,330 vehicles per day. The adjacent land is commercial along the 0.49 -
mile -long segment. The 85th percentile speed is 50 mph and would normally justify a 50 -
mph posted speed limit. This segment is identified as a land or facility that generates high
concentrations of bicycles and pedestrians. The segment has bike lane presence along
the corridor. Because this segment is established as a land or facility that generates high
concentrations of bicycles and pedestrians, an additional 5 mph reduction can be applied.
It is recommended that the speed limit be posted at 45 mph for the above reasons. This
recommendation falls within the limitations requiring the recommendation be no more
than 12.4 mph under the 85th percentile speed.
2024 Engineering and Traffic Survey Amendment
City of La Quinta
Page 4
HCl
ENGINEERING AND TRAFFIC SURVEY
CITY OF INDIO
JEFFERSON STREET
DUNBAR DRIVE TO FRED WARING DR
DATE: 1/9/2024
TIME: 2:O0PM - 2:43 PM
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
PREVAILING SPEED DATA
LOCATION OF SURVEY
DATE OF SURVEY
85th PERCENTILE
10 MPH PACE
PERCENT IN PACE
POSTED SPEED LIMIT
SOUTH OF AVE 42
1/9/2024
49.5 MPH
41 - 50 MPH
69.7 %
50 MPH
COLLISION HISTORY
NO. OF MONTHS OBSERVED
SPEED -RELATED COLLISIONS
FATALITY COLLISIONS
SERIOUS INJURY COLLISIONS
INVOLVING PEDESTRIAN(S)
INVOLVING BICYCLIST(S)
TOTAL COLLISIONS
60
COLLISIONS PER YEAR
1 0.20
0 0.00
2 0.40
0 0.00
0 0.00
24 4.80
COLL./ MILLION VEH. MILES
0.03
0.00
0.07
0.00
0.00
0.81
TRAFFIC FACTORS
AVERAGE DAILY TRAFFIC
LANE CONFIGURATION
TRAFFIC CONTROLS
CROSSWALKS
PEDESTRIAN/BICYCLES
TRUCK TRAFFIC
ON -STREET PARKING
OTHER
33,300
3 LANES PER DIRECTION
SIGNAL - AVE 42 / DUNBAR-ESPLANADE DEL ORO / FRED WARING
AT AVE 42 / DUNBAR-ESPLANADE DEL ORO / FRED WARING
FEW / YES
YES
NO PARKING ANYTIME
DESIGNATED BIKE LANES
ROADWAY FACTORS
LENGTH OF SEGMENT (MILES)
VERTICAL CURVE
HORIZONTAL CURVE
LATERAL VISIBILITY
ROAD CONDITIONS
SIDEWALKS/DRIVEWAYS
STREET LIGHTING
OTHER
0.49
SLIGHT "C" CURVE
NONE
GOOD
GOOD
YES / NO
NO
RAISED MEDIAN ISLAND
ADJACENT LAND USE
RESIDENTIAL (NF) / GOLF RESIDENTIAL COMMUNITY (NF) / COMMERCIAL (at Ave 42)
RECOMMENDED SPEED LIMIT 1 45 MPH
SPEED LIMIT CHANGE
1 REDUCE
JUSTIFICATION:
This segment of Jefferson Street is a six -lane divided roadway. The adjacent land uses is residential non -fronting. The roadway
has a slight "C" curve, signals at Dunbar Drive and Fred Waring Drive, bike lanes, and No Stopping Any Time signs. A review of
the accident history revealed that this segment had one (1) speed related accident and two (2) involved a serious injury. With
speed data showing an 85th percentile speed of 49.5 mph and a median speed of 44.4 mph, it is recommended that the existing
50 mph speed limit be reduced to 45 mph.
NF = NON -FRONTING
File: Jefferson 2024-84
HCl
RADAR SPEED DISTRIBUTION SHEET
CITY OF INDIO
JEFFERSON STREET
DATE: 1/9/2024
TIME: 2:OOPM -
2:43 PM
DUNBAR DRIVE TO FRED WARING DR
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
SPEED
NUMBER OF VEHICLES
5 10 15
25
VEH.
PCT.
CUM.
PCT.
20
70
65
60
55
50
45
40
35
30
25
20
15
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
X
1
0.8%
100.0%
X
X
2
1.7%
99.2%
X
X
X
3
2.5%
97.5%
X
X
X
3
2.5%
95.0%
X
X
X
X
X
5
4.2%
92.4%
X
X
X
X
X
X
X
7
5.9%
88.2%
X
X
X
X
X
X
X
X
X
X
X
11
9.2%
82.4%
X
X
X
X
X
X
X
7
5.9%
73.1%
X
X
X
X
X
X
X
X
8
6.7%
67.2%
X
X
X
X
X
X
X
X
X
9
7.6%
60.5%
X
X
X
X
X
X
6
5.0%
52.9%
X
X
X
X
X
X
X
X
X
9
7.6%
47.9%
X
X
X
X
X
X
X
X
X
9
7.6%
40.3%
X
X
X
X
X
X
X
X
X
9
7.6%
32.8%
X
X
X
X
X
X
X
X
8
6.7%
25.2%
X
X
X
X
X
5
4.2%
18.5%
X
X
X
X
X
5
4.2%
14.3%
X
X
X
3
2.5%
10.1%
X
X
2
1.7%
7.6%
X
X
2
1.7%
5.9%
X
1
0.8%
4.2%
X
X
2
1.7%
3.4%
0
0.0%
1.7%
X
1
0.8%
1.7%
0
0.0%
0.8%
X
1
0.8%
0.8%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
UPPER LIMIT 10 MPH PACE:
LOWER LIMIT 10 MPH PACE:
PERCENT OVER PACE:
PERCENT IN PACE:
PERCENT UNDER PACE:
TOTAL VEHICLES
50 MPH
41 MPH
11.8 %
69.7 %
18.5 %
1191
85th PERCENTILE SPEED:
MEDIAN SPEED:
15th PERCENTILE SPEED:
49.5 MPH
44.4 MPH
39.2 MPH
File: Jefferson 2024-84
RADAR SPEED DISTRIBUTION SHEET
CITY OF INDIO
HCl JEFFERSON STREET
DATE: 1/9/2024
TIME: 2:OOPM - 2:43 PM
DUNBAR DRIVE TO FRED WARING DR
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
SPEED
20
CUMMULATIVE PERCENT
40 60
80
100
70
x
69
x
68
x
67
x
66
x
65
x
64
x
63
x
62
x
61
x
Cn Cn Cn Cn 0)
0)v OD CO C.
x
x
x
x
x
55
x
54
x
53
x
52
x
51
x
50
x
49
x
48
x
47
x
46
x
45
x
44
x
43
x
42
x
41
x
0) -.1 CO CO 0
x
x
x
x
x
W W W W W
—,IV W 401
x
x
x
x
x
30
x
29
x
28
x
27
x
26
x
25
x
24
x
23
x
22
x
21
x
20
x
19
x
18
x
17
x
16
x
15
x
UPPER LIMIT 10 MPH PACE:
LOWER LIMIT 10 MPH PACE:
PERCENT OVER PACE:
PERCENT IN PACE:
PERCENT UNDER PACE:
50 MPH
41 MPH
11.8 %
69.7 %
18.5 %
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
99.2%
97.5%
95.0%
92.4%
88.2% }PACE
82.4% }PACE - - -85PCT
73.1% }PACE
67.2% }PACE
60.5% }PACE
52.9% }PACE
47.9% }PACE - - -MEAN
40.3% }PACE
32.8% }PACE
25.2% }PACE
18.5%
14.3% - - -15PCT
10.1%
7.6%
5.9%
4.2%
3.4%
1.7%
1.7%
0.8%
0.8%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
85th PERCENTILE SPEED: 49.5 MPH
MEDIAN SPEED: 44.4 MPH
15th PERCENTILE SPEED: 39.2 MPH
Jefferson 2024-84
HCI
ENGINEERING AND TRAFFIC SURVEY
CITY OF INDIO
JEFFERSON STREET
FRED WARING DR TO MILES AVE
DATE: 1/9/2024
TIME: 2:30 PM - 4:00 PM
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
PREVAILING SPEED DATA
LOCATION OF SURVEY
DATE OF SURVEY
85th PERCENTILE
10 MPH PACE
PERCENT IN PACE
POSTED SPEED LIMIT
SOUTH OF FRED WARING
1/9/2024
49.8 MPH
42 - 51 MPH
61.0%
50 MPH
ACCIDENT HISTORY
NO. OF MONTHS OBSERVED
SPEED -RELATED ACCIDENTS
FATALITY ACCIDENTS
SERIOUS INJURY ACCIDENTS
INVOLVING PEDESTRIAN(S)
INVOLVING BICYCLIST(S)
TOTAL ACCIDENTS
60
ACCIDENTS PER YEAR
1 0.20
1 0.20
1 0.20
1 0.20
0 0.00
17 3.40
ACC./ MILLION VEH. MILES
0.03
0.03
0.03
0.03
0.00
0.55
TRAFFIC FACTORS
AVERAGE DAILY TRAFFIC
LANE CONFIGURATION
TRAFFIC CONTROLS
CROSSWALKS
PEDESTRIAN/BICYCLES
TRUCK TRAFFIC
ON -STREET PARKING
OTHER
33,850
3 LANES PER DIRECTION
SIGNAL - FRED WARING / MILES
AT - FRED WARING / MILES
FEW / YES
YES
NO PARKING ANYTIME (SB)
DESIGNATED BIKE LANES
ROADWAY FACTORS
LENGTH OF SEGMENT (MILES)
VERTICAL CURVE
HORIZONTAL CURVE
LATERAL VISIBILITY
ROAD CONDITIONS
SIDEWALKS/DRIVEWAYS
STREET LIGHTING
OTHER
0.50
VERY SLIGHT UP -DOWNHILL GRADES
NONE
GOOD
GOOD
YES / FEW
YES
RAISED MEDIAN ISLAND
ADJACENT LAND USE
RESIDENTIAL -GOLF (NF) / COMMERCIAL
RECOMMENDED SPEED LIMIT
45 MPH
SPEED LIMIT CHANGE
REDUCE
JUSTIFICATION:
This segment of Jefferson Street is a six -lane divided roadway. The adjacent land uses are residential golf communities and
commercial at major intersections. With speed data showing an 85th percentile speed of 49.8 mph and a 10 mph pace range of 42
to 51 mph, it is recommended that the existing 50 mph speed limit be reduced to 45 mph.
F + FRONTING - NF = NON -FRONTING
File: Jefferson 2024-85
HCI
RADAR SPEED DISTRIBUTION SHEET
CITY OF INDIO
JEFFERSON STREET
DATE: 1/9/2024
TIME: 2:30 PM - 4:00 PM
FRED WARING DR TO MILES AVE
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
SPEED
NUMBER OF VEHICLES
5 10 15 20
VEH.
PCT.
CUM.
PCT.
25
60
55
50
45
40
35
30
25
20
15
100.0%
100.0%
100.0%
X
1
0.5%
100.0%
XX
2
0.9%
99.5%
XXX
3
1.4%
98.6%
X
XX
X
4
1.9%
97.2%
X
X
X
X
4
1.9%
95.3%
XXX
3
1.4%
93.4%
X
X
X
X
X
X
X
X
X
X
X
X
X
13
6.1%
92.0%
X
X
X
X
X
X
X
X
X
X
10
4.7%
85.9%
X
X
X
X
X
X
X
X
X
X
X
X
12
5.6%
81.2%
X
XX
XX
XX
XX
XX
XX
13
6.1%
75.6%
X
X
X
X
X
X
X
X
X
9
4.2%
69.5%
XXXXXXXXXXXX
12
5.6%
65.3%
X
X
X
X
X
X
X
X
X
X
X
X
12
5.6%
59.6%
XXXXXXXXXXXXXXXXXXXX
20
9.4%
54.0%
X
X
X
X
X
X
X
X
X
X
X
X
X
X
14
6.6%
44.6%
XXXXXXXXXXXXXXX
15
7.0%
38.0%
X
X
X
X
X
X
X
7
3.3%
31.0%
X
XX
XX
X
6
2.8%
27.7%
X
X
X
X
X
X
6
2.8%
24.9%
X
XX
XX
XX
XX
9
4.2%
22.1%
X
X
X
X
X
X
X
X
X
X
X
11
5.2%
17.8%
X
X
X
X
X
5
2.3%
12.7%
X
XX
X
4
1.9%
10.3%
X
X
X
X
X
X
6
2.8%
8.5%
XXXXX
5
2.3%
5.6%
XXX
3
1.4%
3.3%
X
1
0.5%
1.9%
X
1
0.5%
1.4%
0
0.0%
0.9%
X
1
0.5%
0.9%
X
1
0.5%
0.5%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
TOTAL VEHICLES
213
UPPER LIMIT 10 MPH PACE: 51 MPH
LOWER LIMIT 10 MPH PACE: 42 MPH
PERCENT OVER PACE: 8.0 %
PERCENT IN PACE: 61.0 %
PERCENT UNDER PACE: 31.0 %
85th PERCENTILE SPEED: 49.8 MPH
MEDIAN SPEED: 43.6 MPH
15th PERCENTILE SPEED: 36.5 MPH
File: Jefferson 2024-85
RADAR SPEED DISTRIBUTION SHEET
CITY OF INDIO
HCI JEFFERSON STREET
DATE: 1/9/2024
TIME: 2:30 PM - 4:00 PM
FRED WARING DR TO MILES AVE
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
SPEED
20
CUMMULATIVE PERCENT
40 60
80
100
60
x
59
x
58
x
57
x
56
x
-,NW4U1
x
x
x
x
x
50
x
49
x
48
x
47
x
46
x
45
x
44
x
43
x
42
x
41
x
40
x
39
x
38
x
37
x
36
x
35
x
34
x
33
x
32
x
31
x
30
x
29
x
28
x
27
x
26
x
25
x
24
x
23
x
22
x
21
x
20
x
19
x
18
x
17
x
16
x
15
x
UPPER LIMIT 10 MPH PACE:
LOWER LIMIT 10 MPH PACE:
PERCENT OVER PACE:
PERCENT IN PACE:
PERCENT UNDER PACE:
51 MPH
42 MPH
8.0 %
61.0
31.0
100.0%
100.0%
100.0%
100.0%
99.5%
98.6%
97.2%
95.3%
93.4%
92.0% }PACE
85.9% }PACE
81.2% }PACE - - -85PCT
75.6% }PACE
69.5% }PACE
65.3% }PACE
59.6% }PACE
54.0% }PACE
44.6% }PACE - -MEAN
38.0% }PACE
31.0%
27.7%
24.9%
22.1%
17.8%
12.7% - - -15PCT
10.3%
8.5%
5.6%
3.3%
1.9%
1.4%
0.9%
0.9%
0.5%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
85th PERCENTILE SPEED: 49.8 MPH
MEDIAN SPEED: 43.6 MPH
15th PERCENTILE SPEED: 36.5 MPH
Jefferson 2024-85
HCI
ENGINEERING AND TRAFFIC SURVEY
CITY OF INDIO
JEFFERSON STREET
MILES AVE TO WESTWARD HO DR
DATE: 1/9/2024
TIME: 9:00 AM - 10:20 AM
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
PREVAILING SPEED DATA
LOCATION OF SURVEY
DATE OF SURVEY
85th PERCENTILE
10 MPH PACE
PERCENT IN PACE
POSTED SPEED LIMIT
NORTH OF WESTWARD HO
1/9/2024
51.4 MPH
40 - 49 MPH
59.1 %
50 MPH
ACCIDENT HISTORY
NO. OF MONTHS OBSERVED
SPEED -RELATED ACCIDENTS
FATALITY ACCIDENTS
SERIOUS INJURY ACCIDENTS
INVOLVING PEDESTRIAN(S)
INVOLVING BICYCLIST(S)
TOTAL ACCIDENTS
60
2
0
9
ACCIDENTS PER YEAR
0.40
0.20
0.20
0.00
0.20
1.80
ACC./ MILLION VEH. MILES
0.07
0.04
0.04
0.00
0.04
0.33
TRAFFIC FACTORS
AVERAGE DAILY TRAFFIC
LANE CONFIGURATION
TRAFFIC CONTROLS
CROSSWALKS
PEDESTRIAN/BICYCLES
TRUCK TRAFFIC
ON -STREET PARKING
OTHER
29,850
3 LANES PER DIRECTION
SIGNAL - MILES / AUGUSTA -PEBBLE BEACH / WESTWARD HO
AT MILES / AUGUSTA -PEBBLE BEACH / WESTWARD HO
FEW / YES
YES
NO PARKING ANYTIME
DESIGNATED BIKE LANES
ROADWAY FACTORS
LENGTH OF SEGMENT (MILES)
VERTICAL CURVE
HORIZONTAL CURVE
LATERAL VISIBILITY
ROAD CONDITIONS
SIDEWALKS/DRIVEWAYS
STREET LIGHTING
OTHER
0.50
SLIGHT UP -DOWNHILL GRADES
NONE
LIMITED SIGHT DISTANCE (slight)
GOOD
YES / NO
YES
RAISED MEDIAN ISLAND
ADJACENT LAND USE
RESIDENTIAL -GOLF COMMUNITY (NF)
RECOMMENDED SPEED LIMIT
45 MPH
SPEED LIMIT CHANGE
REDUCE - "SAFETY CORRIDOR" CVC 22358.7(a)(1)
JUSTIFICATION:
This segment of Jefferson Street is a six -lane divided roadway. The adjacent land uses are solely residential golf communities. The
speed data shows an 85th percentile of speed of 51.4 mph, which may suggest a speed limit of 50 mph. A review of the accident
history revealed that this segment had two (2) speed related accidents, one (1) fatality, one (1) involved a serious injury and one (1)
involved a bicyclist, which ranked it as one of the top locations in the City that involved fatality and/or serious injury accidents. In
accordance with CVC 22358.7(a)(1), this segment is designated as a "Safety Corridor" which allows the speed limit to be reduced by 5
mph. Collectively, this segment and other City streets designated as a "Safety Corridor" did not exceed more than 20% of City
maintained streets. Therefore, it is recommended that the existing 50 mph speed limit be reduced to 45 mph.
F + FRONTING - NF = NON -FRONTING
File: Jefferson 2024-86
HCI
RADAR SPEED DISTRIBUTION SHEET
CITY OF INDIO
JEFFERSON STREET
DATE: 1/9/2024
TIME: 9:00 AM - 10:20 AM
MILES AVE TO WESTWARD HO DR
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
SPEED
NUMBER OF VEHICLES
5 10 15 20
VEH.
PCT.
CUM.
PCT.
25
60
55
50
45
40
35
30
25
20
15
100.0%
100.0%
X
1
0.5%
100.0%
XX
2
1.0%
99.5%
XXX
3
1.4%
98.6%
X
X
X
X
X
X
6
2.9%
97.1%
X
XX
XX
X
6
2.9%
94.2%
X
X
X
X
X
X
X
X
8
3.8%
91.3%
XXXXXXXX
8
3.8%
87.5%
X
X
X
X
X
X
X
X
8
3.8%
83.7%
X
XX
XX
X
6
2.9%
79.8%
X
X
X
X
X
X
X
X
X
X
10
4.8%
76.9%
X
XX
XX
XX
XX
9
4.3%
72.1%
X
X
X
X
X
X
X
X
X
X
X
X
12
5.8%
67.8%
XXXXXXXXXXXXXXX
15
7.2%
62.0%
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
16
7.7%
54.8%
X
XX
XX
XX
XX
XX
XX
13
6.3%
47.1%
X
X
X
X
X
X
X
X
X
X
X
X
X
X
14
6.7%
40.9%
X
XX
XX
XX
XX
XX
X
12
5.8%
34.1%
X
X
X
X
X
X
X
X
X
X
X
11
5.3%
28.4%
X
X
X
X
X
X
X
X
X
X
X
11
5.3%
23.1%
X
X
X
X
X
X
X
X
X
9
4.3%
17.8%
X
XX
XX
X
6
2.9%
13.5%
X
X
X
X
X
X
X
7
3.4%
10.6%
X
X
X
X
4
1.9%
7.2%
X
1
0.5%
5.3%
X
X
X
X
X
5
2.4%
4.8%
X
1
0.5%
2.4%
XXX
3
1.4%
1.9%
0
0.0%
0.5%
X
1
0.5%
0.5%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
TOTAL VEHICLES
208
UPPER LIMIT 10 MPH PACE: 49 MPH
LOWER LIMIT 10 MPH PACE: 40 MPH
PERCENT OVER PACE: 23.1 %
PERCENT IN PACE: 59.1 %
PERCENT UNDER PACE: 17.8 %
85th PERCENTILE SPEED: 51.4 MPH
MEDIAN SPEED: 44.4 MPH
15th PERCENTILE SPEED: 38.4 MPH
File: Jefferson 2024-86
RADAR SPEED DISTRIBUTION SHEET
CITY OF INDIO
HCI JEFFERSON STREET
DATE: 1/9/2024
TIME: 9:00 AM - 10:20 AM
MILES AVE TO WESTWARD HO DR
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
SPEED
20
CUMMULATIVE PERCENT
40 60
80
100
60
x
59
x
58
x
57
x
56
x
-,NW4U1
x
x
x
x
x
50
x
49
x
48
x
47
x
46
x
45
x
44
x
43
x
42
x
41
x
40
x
39
x
38
x
37
x
36
x
35
x
34
x
33
x
32
x
31
x
30
x
29
x
28
x
27
x
26
x
25
x
24
x
23
x
22
x
21
x
20
x
19
x
18
x
17
x
16
x
15
x
UPPER LIMIT 10 MPH PACE:
LOWER LIMIT 10 MPH PACE:
PERCENT OVER PACE:
PERCENT IN PACE:
PERCENT UNDER PACE:
49 MPH
40 MPH
23.1 %
59.1 %
17.8
100.0%
100.0%
100.0%
99.5%
98.6%
97.1%
94.2%
91.3%
87.5%
83.7% - - -85PCT
79.8%
76.9% }PACE
72.1% }PACE
67.8% }PACE
62.0% }PACE
54.8% }PACE
47.1% }PACE - -MEAN
40.9% }PACE
34.1% }PACE
28.4% }PACE
23.1% }PACE
17.8%
13.5% - - -15PCT
10.6%
7.2%
5.3%
4.8%
2.4%
1.9%
0.5%
0.5%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
85th PERCENTILE SPEED: 51.4 MPH
MEDIAN SPEED: 44.4 MPH
15th PERCENTILE SPEED: 38.4 MPH
Jefferson 2024-86
CITY OF LA QUINTA
ENGINEERING & TRAFFIC SURVEY
STREET: Jefferson Street
DATE: 9/23/24
between Westward Ho
TIME: 11:35a
and Hwy.111
OBSERVER: Steve Libring
LOCATION: 33
PART I: HIGHWAY & ROADWAY CHARACTERISTICS
Sight Distance Obstructions?
(yes or no)
S/B
N/B
Notes
1. Horizontal
No
No
2. Vertical
Yes
Yes
3. Superelevation (%)
None
None
4. Shoulder Conditions (paved or unpaved)
Paved
Paved
5. Profile Conditions (grade,%)
6. Commercial Driveway Characteristics
(at grade, dustpan, etc)
At -Grade
At -Grade
Limited driveways on
each side of roadway
7. Pedestrian Traffic in the Roadway without
sidewalks (yes or no)
No
No
Sidewalks on both
sides
8. Adjacent Land Use
(residential, commercial, office, etc)
Residential &
Commercial
Residential &
Commercial
9. Intersection Spacing and Offsets
(spacing, feet offsets, yes or no)
No offsets
Roundabouts at
Avenue 52 and
Hideaway Club Drive;
all -way stop at
Avenue 54
10. Pavement Condition
(good, satisfactory, poor)
Good
Good
11. Truck Traffic (heavy, moderate, light)
Light
Light
12. Channelization (# of lanes, divided,
undivided, painted, or raised median)
3 lanes with bike/cart
lane, divided with a
raised median
3 lanes with bike/cart
lane, divided with a
raised median
14' raised median
13. Street Width and Alignment
(width, feet — straight or curved)
44'
44'
14. Street Length
0.49 mi. segment
15. Average Daily Traffic
24,330 total collected
in 2016
16. Traffic Flow Characteristics
(heavy, moderate, light)
Moderate
Moderate
17. Uniformity with the Community
(yes or no)
Yes
Yes
18. Heavy On -Street Parking Turnover
(yes or no)
No
No
No parking allowed
on both sides
19. Street Lighting
Only at signals
STREET: Jefferson Street
P
CITY OF LA QUINTA
ENGINEERING & TRAFFIC SURVEY
between Westward Ho
and Hwy 111
LOCATION: 33
Direction
Bi-directional
❑ Northbound *
❑ Eastbound *
❑ Southbound *
❑ Westbound *
RT II: PREVAILING SPEED MEASUREMENT
Location of Radar Measurement
Number of
Accidents
Midblock
10
Date of Radar Measurement
916/2024
Midblock
Accident Rate
(Acc/MVM)
Expected-Statewide/Year
Time of Radar Measurement (24 hour)
11:05 AM TO 11:35 AM
Actual
50%ile (mph)
85%ile (mph)
48
50
10 mph Pace (% of Vehicles)
42-51 (87%)
Posted Limit
Prevailing Limit
55 mph
55 mph
PART III: ACCIDENT RECORDS
Time Period Evaluated
1/1/2019 TO 12/31/2021
Number of
Accidents
Midblock
10
Midblock
Accident Rate
(Acc/MVM)
Expected-Statewide/Year
1.17 per MVM
Actual
0.76 per MVM
PART IV: ADDITIONAL REMARKS
Reduced due to bike lane presence as land that attracts high concentrations of pedestrians or biyclists
RECOMMENDED SPEED LIMIT
45 mph
* May be used in cases where two or more separate roadways are provided.
CERTIFICATION: I, Nicolle Spann do hereby certify that this Engineering and Traffic Survey within the City of La Quinta
was performed under my supervision and is accurate and complete. I am duly registered in the State of California as a
Professional Engineer (Traffic).
9/23/2024 TE 2933
Nicolle Spann Date State Registration Number
CITY OF LA QUINTA
DATE: 09/16/24 DAY: Monday TIME PERIOD: 11:05 AM TO 11:35 AM
FOR ROADWAY: JEFFERSON
SPEED
TOTAL VEHICLES SURVEYED
TOTAL
(MPH)
NORTHBOUND+SOUTHBOUND
NB
SB
VEHICLES
LIMITS (BTN): Westward Ho and Hwy 111
65
0
0
0
64
0
0
0
OBSERVATION POINT: n/o Vista Grande
63
0
0
0
62
X
0
1
1
61
0
0
0
POSTED SPEED LIMIT: 55 MPH OBSERVER: SL
60
0
0
0
59
X
1
0
1
COMMENTS: WEATHER: SUNNY
58
X
1
0
1
57
0
0
0
ROAD SURFACE: DRY
56
0
0
0
55
X
0
1
1
ROAD CONDITION: GOOD
54
X X
2
0
2
53
XX
1
1
2
DATA COLLECTION METHOD: RADAR
52
XXX
3
0
3
51
XXXXXX
4
2
6
50
XXXXXXXXXXXXXXX
6
9
15
49
XXXXXXXXXXXXXXXXXXXX
11
9
20
48
XXXXXXXXXXXXXXX
10
5
15
47
XXXXXXXXXX
4
6
10
46
XXXXXXXXXXXXXXX
6
9
15
45
XXXXXXXX
3
5
8
44
XXXXXXXX
2
6
8
43
XX
0
2
2
NORTHBOUND SOUTHBOUND NORTHBOUND+SOUTHBOUND
42
XXXX
3
1
4
41
0
0
0
40
XXX
1
2
3
85TH %: 51 50 50 M.P.H.
39
0
0
0
38
X X
1
1
2
50TH %: 48 47 48 M.P.H.
37
0
0
0
36
0
0
0
15TH %: 45 44 44 M.P.H.
35
0
0
0
34
0
0
0
*
10 MPH PACE: 45 - 54 42 - 51 42 - 51 M.P.H.
33
0
0
0
32
0
0
0
P
% IN PACE: 85% 90% 87%
31
0
0
0
A
30
0
0
0
C
% OVER PACE: 3% 5% 9%
29
0
0
0
E
28
0
0
0
*
% UNDER PACE: 12% 5% 4%
27
0
0
0
*
26
0
0
0
*
ARITHMETIC MEAN: 48 47 48 M.P.H.
25
0
0
0
24
0
0
0
SAMPLE VARIANCE: 14 13 14
23
0
0
0
22
0
0
0
STANDARD DEVIATION: 4 4 4 M.P.H.
21
0
0
0
20
0
0
0
VARIANCE OF THE MEAN: 0.23 0.22 0.12
19
0
0
0
18
0
0
0
STD. ERROR OF THE MEAN: 0.48 0.47 0.34 M.P.H.
17
0
0
0
16
0
0
0
15
0
0
0
59
60
119
W:\WE-CA\La Quinta, City of\Jefferson E&T Update - Sept 2024\Segment Sheets and Radar\Jefferson - Westward Ho to Hwy 111
HCI
ENGINEERING AND TRAFFIC SURVEY
CITY OF INDIO
JEFFERSON STREET
HIGHWAY 111 TO AVENUE 48
DATE: 2/22/2024
TIME: 11:40 AM - 11:51 AM
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
PREVAILING SPEED DATA
LOCATION OF SURVEY
DATE OF SURVEY
85th PERCENTILE
10 MPH PACE
PERCENT IN PACE
POSTED SPEED LIMIT
NORTH OF AVE 48
2/22/2024
51.7 MPH
44 - 53 MPH
65.5 %
55 MPH
ACCIDENT HISTORY
NO. OF MONTHS OBSERVED
SPEED -RELATED ACCIDENTS
FATALITY ACCIDENTS
SERIOUS INJURY ACCIDENTS
INVOLVING PEDESTRIAN(S)
INVOLVING BICYCLIST(S)
TOTAL ACCIDENTS
60
ACCIDENTS PER YEAR
3 0.60
0 0.00
0 0.00
0 0.00
1 0.20
14 2.80
ACC./ MILLION VEH. MILES
0.12
0.00
0.00
0.00
0.04
0.57
TRAFFIC FACTORS
AVERAGE DAILY TRAFFIC
LANE CONFIGURATION
TRAFFIC CONTROLS
CROSSWALKS
PEDESTRIAN/BICYCLES
TRUCK TRAFFIC
ON -STREET PARKING
OTHER
26,550
3 LANES PER DIRECTION
SIGNAL - HWY 111 / AVE 48
AT HWY 111 / AVE 48
FEW / YES
YES
NO PARKING ANYTIME & NO PARKING ANYTIME
DESIGNATED BIKE LANES
NO SHOULDERS / BUS STOPS
ROADWAY FACTORS
LENGTH OF SEGMENT (MILES)
VERTICAL CURVE
HORIZONTAL CURVE
LATERAL VISIBILITY
ROAD CONDITIONS
SIDEWALKS/DRIVEWAYS
STREET LIGHTING
OTHER
0.51
NONE
NONE
GOOD
GOOD
PARTIAL / NO (NB) - YES / ONE (SB)
YES
RAISED MEDIAN ISLAND
ADJACENT LAND USE
RESIDENTIAL (NF) / COMMERCIAL (at Hwy 111)
RECOMMENDED SPEED LIMIT
50 MPH
SPEED LIMIT CHANGE
REDUCE
JUSTIFICATION:
This segment of Jefferson Street is a six -lane divided roadway. The adjacent land uses are residential non -fronting to the roadway
and commercial shopping centers at Highway 111. Field notes state that there are signals at Highway 111 and Avenue 48, no
shoulders, No Stopping Any Time signs, bike lanes and bus stops. With speed data showing an 85th percentile speed of 51.7 mph
and a 10 mph pace range of 44 to 53 mph, it is recommended that the existing 55 mph speed limit be reduced to 50 mph.
F + FRONTING - NF = NON -FRONTING
File: Jefferson 2024-87
HCI
RADAR SPEED DISTRIBUTION SHEET
CITY OF INDIO
JEFFERSON STREET
DATE: 2/22/2024
TIME: 11:40 AM - 11:51 AM
HIGHWAY 111 TO AVENUE 48
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
SPEED
NUMBER OF VEHICLES
5 10 15 20 25
VEH.
PCT.
CUM.
PCT.
60
55
50
45
40
35
30
25
20
15
100.0%
100.0%
100.0%
X
1
0.9%
100.0%
X
X
2
1.8%
99.1%
X
1
0.9%
97.3%
X
X
X
X
X
5
4.5%
96.4%
X
X
X
X
4
3.6%
91.8%
X
X
X
X
X
X
X
X
X
X
X
11
10.0%
88.2%
X
X
X
X
X
X
6
5.5%
78.2%
X
X
X
X
4
3.6%
72.7%
X
X
X
X
X
X
X
X
X
X
X
X
12
10.9%
69.1%
X
X
X
X
X
X
X
X
8
7.3%
58.2%
X
X
X
X
X
5
4.5%
50.9%
X
X
X
X
X
X
6
5.5%
46.4%
X
X
X
X
X
X
X
7
6.4%
40.9%
X
X
X
X
X
X
X
X
X
9
8.2%
34.5%
X
X
X
3
2.7%
26.4%
X
X
X
X
X
X
X
7
6.4%
23.6%
X
X
X
3
2.7%
17.3%
X
X
X
X
4
3.6%
14.5%
X
X
X
3
2.7%
10.9%
X
X
2
1.8%
8.2%
X
X
X
X
X
5
4.5%
6.4%
X
1
0.9%
1.8%
X
1
0.9%
0.9%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
TOTAL VEHICLES
110
UPPER LIMIT 10 MPH PACE: 53 MPH
LOWER LIMIT 10 MPH PACE: 44 MPH
PERCENT OVER PACE: 8.2 %
PERCENT IN PACE: 65.5 %
PERCENT UNDER PACE: 26.4 %
85th PERCENTILE SPEED: 51.7 MPH
MEDIAN SPEED: 46.8 MPH
15th PERCENTILE SPEED: 40.2 MPH
File: Jefferson 2024-87
RADAR SPEED DISTRIBUTION SHEET
CITY OF INDIO
HCI JEFFERSON STREET
DATE: 2/22/2024
TIME: 11:40 AM - 11:51 AM
HIGHWAY 111 TO AVENUE 48
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
SPEED
20
CUMMULATIVE PERCENT
40 60
80
100
60
x
59
x
58
x
57
x
56
x
-,NW4U1
x
x
x
x
x
50
x
49
x
48
x
47
x
46
x
45
x
44
x
43
x
42
x
41
x
40
x
39
x
38
x
37
x
36
x
35
x
34
x
33
x
32
x
31
x
30
x
29
x
28
x
27
x
26
x
25
x
24
x
23
x
22
x
21
x
20
x
19
x
18
x
17
x
16
x
15
x
UPPER LIMIT 10 MPH PACE:
LOWER LIMIT 10 MPH PACE:
PERCENT OVER PACE:
PERCENT IN PACE:
PERCENT UNDER PACE:
53 MPH
44 MPH
8.2 %
65.5 %
26.4 %
100.0%
100.0%
100.0%
100.0%
99.1%
97.3%
96.4%
91.8% }PACE
88.2% }PACE
78.2% }PACE -85PCT
72.7% }PACE
69.1% }PACE
58.2% }PACE
50.9% }PACE
46.4% }PACE - -MEAN
40.9% }PACE
34.5% }PACE
26.4%
23.6%
17.3%
14.5% - - -15PCT
10.9%
8.2%
6.4%
1.8%
0.9%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
85th PERCENTILE SPEED: 51.7 MPH
MEDIAN SPEED: 46.8 MPH
15th PERCENTILE SPEED: 40.2 MPH
Jefferson 2024-87
HCI
ENGINEERING AND TRAFFIC SURVEY
CITY OF INDIO
JEFFERSON STREET
DATE: 1/11/2024
TIME: 1:30 PM - 2:14 PM
PREVAILING SPEED DATA
LOCATION OF SURVEY
DATE OF SURVEY
85th PERCENTILE
10 MPH PACE
PERCENT IN PACE
POSTED SPEED LIMIT
AVENUE 48 TO AVENUE 50 (EASTSIDE ONLY)
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
NORTHBOUND ONLY
SOUTH OF DEREK ALAN
1/11/2024
52.7 MPH
42 - 51 MPH
60.8 %
55 MPH (NB)
COLLISION HISTORY
NO. OF MONTHS OBSERVED
SPEED -RELATED COLLISIONS
FATALITY COLLISIONS
SERIOUS INJURY COLLISIONS
INVOLVING PEDESTRIAN(S)
INVOLVING BICYCLIST(S)
TOTAL COLLISIONS
60
4
0
0
0
9
COLLISIONS PER YEAR
0.80
0.00
0.00
0.00
0.20
1.80
COLL./ MILLION VEH. MILES
0.09
0.00
0.00
0.00
0.02
0.21
TRAFFIC FACTORS
AVERAGE DAILY TRAFFIC
LANE CONFIGURATION
TRAFFIC CONTROLS
CROSSWALKS
PEDESTRIAN/BICYCLES
TRUCK TRAFFIC
ON -STREET PARKING
OTHER
23,700
3 LANES PER DIRECTION
SIGNAL - AVE 48 / AVE 49 / AVE 50
AT AVE 48 / AVE 49 / AVE 50
FEW / YES
YES
NO PARKING ANYTIME
PAINTED BIKE LANES
ROADWAY FACTORS
LENGTH OF SEGMENT (MILES)
VERTICAL CURVE
HORIZONTAL CURVE
LATERAL VISIBILITY
ROAD CONDITIONS
SIDEWALKS/DRIVEWAYS
STREET LIGHTING
OTHER
0.99
NONE
NONE
GOOD
GOOD
YES / FEW
YES
RAISED MEDIAN ISLAND
ADJACENT LAND USE
RESIDENTIAL (NF) / COMMERCIAL (at Ave 50) / OPEN LAND
RECOMMENDED SPEED LIMIT
50 MPH
SPEED LIMIT CHANGE
REDUCE
JUSTIFICATION:
This segment of Jefferson Street is a six -lane divided roadway that is shared with the City of La Quinta. The adjacent land uses
are residential non -fronting to the roadway, light commercial and open undeveloped land. With speed data showing an 85th
percentile speed of 52.7 mph and a 10 mph pace range of 42 to 51 mph, it is recommended that the existing 55 mph speed
limit be reduced to 50 mph.
NF = NON -FRONTING
55 MPH SB - La Quinta Jurisdiction)
File: Jefferson 2024-88
HCI
RADAR SPEED DISTRIBUTION SHEET
CITY OF INDIO
JEFFERSON STREET
DATE: 1/11/2024
TIME: 1:30 PM -
2:14 PM
AVENUE 48 TO AVENUE 50 (EASTSIDE ONLY
SURVEY BY: NATIONAL DATA & SURVEYI
CHECKED BY: SCOTT MA
SPEED
NUMBER OF VEHICLES
5 10 15 20 25
VEH.
PCT.
CUM.
PCT.
70
65
60
55
50
45
40
35
30
25
20
15
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
X
X
2
2.0%
100.0%
X
1
1.0%
98.0%
X
1
1.0%
97.1%
X
X
2
2.0%
96.1%
X
X
X
3
2.9%
94.1%
X
X
X
3
2.9%
91.2%
X
X
X
3
2.9%
88.2%
X
1
1.0%
85.3%
X
X
X
3
2.9%
84.3%
X
X
X
X
X
X
X
X
X
9
8.8%
81.4%
X
X
X
X
X
X
X
7
6.9%
72.5%
X
X
X
X
X
5
4.9%
65.7%
X
X
X
X
X
5
4.9%
60.8%
X
X
X
X
X
X
X
7
6.9%
55.9%
X
X
X
X
X
X
6
5.9%
49.0%
X
X
X
X
X
5
4.9%
43.1%
X
X
X
XX
X
X
X
8
7.8%
38.2%
X
X
X
X
4
3.9%
30.4%
X
X
X
X
X
X
6
5.9%
26.5%
X
X
X
X
4
3.9%
20.6%
X
X
X
X
X
X
6
5.9%
16.7%
X
X
2
2.0%
10.8%
X
X
2
2.0%
8.8%
X
X
2
2.0%
6.9%
X
1
1.0%
4.9%
X
1
1.0%
3.9%
X
1
1.0%
2.9%
0
0.0%
2.0%
X
1
1.0%
2.0%
X
1
1.0%
1.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
UPPER LIMIT 10 MPH PACE:
LOWER LIMIT 10 MPH PACE: 42
PERCENT OVER PACE: 18.6
PERCENT IN PACE: 60.8
PERCENT UNDER PACE: 20.6
TOTAL VEHICLES
51 MPH
MPH
ok
ok
ok
102
85th PERCENTILE SPEED: 52.7 MPH
MEDIAN SPEED: 46.1 MPH
15th PERCENTILE SPEED: 39.7 MPH
File: Jefferson 2024-88
RADAR SPEED DISTRIBUTION SHEET
CITY OF INDIO
HCl JEFFERSON STREET
DATE: 1/11/2024
TIME: 1:30 PM - 2:14 PM
AVENUE 48 TO AVENUE 50 (EASTSIDE ONLY)
SURVEY BY: NATIONAL DATA & SURVEYING
CHECKED BY: SCOTT MA
SPEED
20
CUMMULATIVE PERCENT
40 60
80
100
70
x
69
x
68
x
67
x
66
x
65
x
64
x
63
x
62
x
61
x
Cn Cn Cn Cn 0)
O V OD CO0
x
x
x
x
x
55
x
54
x
53
x
52
x
51
x
50
x
49
x
48
x
47
x
46
x
45
x
44
x
43
x
42
x
41
x
CO CO CO CO A
0)
CO CO
x
x
x
x
x
W W W W W
W 4 01
x
x
x
x
x
30
x
29
x
28
x
27
x
26
x
25
x
24
x
23
x
22
x
21
x
20
x
19
x
18
x
17
x
16
x
15
x
UPPER LIMIT 10 MPH PACE:
LOWER LIMIT 10 MPH PACE:
PERCENT OVER PACE:
PERCENT IN PACE:
PERCENT UNDER PACE:
51 MPH
42 MPH
18.6 %
60.8 %
20.6 %
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
98.0%
97.1%
96.1%
94.1 %
91.2%
88.2%
85.3%
84.3% - - -85PCT
81.4% }PACE
72.5% }PACE
65.7% }PACE
60.8% }PACE
55.9% }PACE
49.0% }PACE - - -MEAN
43.1% }PACE
38.2% }PACE
30.4% }PACE
26.5% }PACE
20.6%
16.7%
10.8% - - -15PCT
8.8%
6.9%
4.9%
3.9%
2.9%
2.0%
2.0%
1.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
85th PERCENTILE SPEED: 52.7 MPH
MEDIAN SPEED: 46.1 MPH
15th PERCENTILE SPEED: 39.7 MPH
Jefferson 2024-88
LEGEND:
SPEED LIMIT MPH
25
30
35
40
45
50
55
= CITY LIMITS
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