AMENDMENT NO. 1
ENGINEERING AND TRAFFIC SURVEY FOR
SPEED LIMITS
June 4, 2024
ATTACHMENT 4
ATTACHMENT 4
City of Manteca June 2024
Amendment No. 1
Engineering and Traffic Survey for Speed Limits
3 AMENDEMENT NO. 1 ORGANIZATION
Amendment No. 1 is under headings that correspond with the main section headings of the ENGINEERING AND TRAFFIC SURVEY FOR SPEED LIMITS dated May 2, 2023, adopted under Resolution No. R2023-49.
The main sections heading is a heading shown in the table of contents of the adopted ENGINEERING AND TRAFFIC SURVEY FOR SPEED LIMITS.
Each revision below begins with a revisions clause that describes or introduces a revision to the ENGINEERING AND TRAFFIC SURVEY FOR SPEED LIMITS dated May 2, 2023, adopted under Resolution No. R2023-49.
3.0 RESULTS AND RECOMMENDATIONS
Replace Row No. 58 in Table No. 3 in the ENGINEERING AND TRAFFIC SURVEY FOR SPEED LIMITS dated May 2, 2023, adopted under Resolution No. R2023-49 with the following:
Table 3: Speed Survey Recommendations
No. Street Segment
Existing
Speed
Limit
(mph)
Recom
Speed
Limit
(mph)
85%
Speed
(mph)
Median
Speed
(mph)
10 mph
Pace
Range
(mph)
% of
Veh. In
Pace Justification
58 Moffat Boulevard
between Powers
Ave and Main St
40 35 41 37 34-43 81% A 5-mph reduction from the
85th-percentile speed due to
pace speed, uncontrolled
crosswalk, and pedestrians
crossing the road to access
transit center.
ATTACHMENT 4
City of Manteca June 2024
Amendment No. 1
Engineering and Traffic Survey for Speed Limits
4 Appendix
Replace Location No. 58 in The Appendix Section in the
ENGINEERING AND TRAFFIC SURVEY FOR SPEED LIMITS
dated May 2, 2023, adopted under Resolution No. R2023-49 with the following:
ATTACHMENT 4
City of Manteca
AMENDMENT NO. 1 Engineering and Traffic Survey
Location:
Direction: Recorder: FG/BD
Survey Date: Weather:
Begin Time: End Time:
Summary Statistics Speed Number Number
Total Observed 25 0 2
Speed Range 26 0 1
50th percentile speed 27 0 0
85th percentile speed 28 1 1
10 mph pace speed 29 5 0
% in pace speed 30 2 0
31 1 0
32 6 0
33 1 0
34 6 0
35 12 0
36 13 0
37 13 0
38 15 0
39 12 0
40 7 0
41 8 0
42 7 0
43 2 0
44 2 0
117
Segment Length(mi): ADT:
Number of Collisions: Time Period: years
Calc. Collision Rate = collisions per million vehicle-miles Street Width (ft): Driveway: Terrain:
Parking Conditions: Sidewalk:
EB 1 WB 1
No
Yes
Comments:
46 52
51 50
49 48
47 34 - 43 MPH
81%
TOTAL
58 59
60 61
57 56
55 54
53 VEHICLE SPEED DATA RECOMMENDED SPEED LIMIT
Speed
35 MPH
117
5/13/2024
Both
4:30 PM
45 5:30 PM
MOFFAT BOULEVARD - Powers Ave to Main St
Posted Speed Limit: 40 mph
Clear/Dry
A 5-mph reduction from the 85th-percentile speed due to pace speed, uncontrolled crosswalk, and pedestrians crossing the road to access transit center. 28 - 48 MPH
64 1.18 c/mvm
Varies
ANALYSIS INFORMATION
Flat
Both Sides
6,475
3 Yes
37 MPH
41 MPH
Number of Lanes: Adjacent Land Use:
Divided Median:
Uncontrolled Crosswalks
The 85th-percentile speed of 41 mph indicates a 40 mph speed limit. However, due to pace speed, uncontrolled crosswalk, and pedestrians crossing the road to access transit center, a downgrading of the speed limit by 5 mph is justified. The 10 mph pace ranges from 34 mph to 43 mph and the recommended speed limit falls within this range. Therefore, it is recommended that the posted speed limit is reduced to be 35 mph.
Speed Limit Change: Yes
Speed Justification:
63 62
0.73 3
0.58 47
Both Sides Bike Lanes:
Commercial/Medium
Density Residential/
Downtown/ Industrial
Expected Collisions Rate:
0 2
4 6
8 10
12 14
16 28 30 32 34 36 38 40 42 44 46 48
ATTACHMENT 4
LOCATION 58 - MOFFAT BLVD
BETWEEN POWERS AVE AND MAIN ST
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