Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY
LOCATION: Alejandra Avenue SURVEY DATE: 8/12/2025
LIMITS: Between El Camino Real and Emile Avenue
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
61 85th PERCENTILE 32 MPH AVERAGE SPEED 27 MPH
60 59 10 MPH PACE SPEED FROM 23 MPH TO 32 MPH MPH
58 % UNDER PACE 8.0% % IN PACE 81.0% % OVER PACE 11.0%
57 56
55 ROADSIDE CONDITIONS
54 53
PREDOMINANT LAND USE
52 51 SINGLE FAMILY RESIDENTIAL
50 MULTI-FAMILY RESIDENTIAL
49 COMMERCIAL
48 OFFICE
47 INDUSTRIAL
46 SCHOOL L
45 PARK
44 PLACE OF WORSHIP L
43 ON STREET PARKING
42 41 HEAVY
40 MODERATE
39 LIGHT
38 1 NO PARKING
37 ROADWAY GEOMETRY
36 35 1 SEGMENT LENGTH (FEET): 2,250
1 WIDTH (FEET) 24'
34 33 MEDIAN: No
NUMBER OF LANES: 2
32 31 4 BIKE LANES No
30 12 AVERAGE DAILY TRAFFIC (ADT) 1,773
29 7
28 3
COLLISIONS
27 6
26 9 YEAR 2020 2021 2022 2023 2024
25 10 NUMBER 0
24 6 DUE TO SPEEDING 0 0
23 22 4
21 1 COMMENTS:
20 The 85th percentile speed of 32 mph indicates a speed limit of 30 mph, per CVC Section 22358.6(a) which requires rounding to the nearest 5 mph. Recommendation-No change in the existing speed limit is recommended. CVC 19 Section 22358.6(b) allows a reduction of 5 mph from the nearest 5 mph increment of the 85th percentile speed, in 18 compliance with Section 627 and 22358.5 and the California Manual on Uniform Traffic Control Devices, if the reasons 17 for the lower speed limit are documented. Recommendation - No change in the existing speed limit is recommended 16 given: 1)Driver's ability to see vehicles entering from side streets and set back driveways is limited by grade of roadway and/or existing landscaping; 2) substantial bicycle and pedestrian traffic in the roadway due to lack of sidewalks 15 Recommended Speed Limit: 25 mph
I certify this document is true and accurate
Signed: Date: 9/11/2025
11 Robert Ovadia, P.E.
85 Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY
LOCATION: Atherton Avenue SURVEY DATE: 8/20/2025
LIMITS: Between Alameda de las Pulgas and Stevenson Lane
VEHICLE POSTED
SPEED TOTAL SPEED 30 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
61 85th PERCENTILE 32 MPH AVERAGE SPEED 29 MPH
60 59 10 MPH PACE SPEED FROM 24 MPH 33 MPH MPH
58 % UNDER PACE 1.0% % IN PACE 90.0% % OVER PACE 8.0%
57 56
55 ROADSIDE CONDITIONS
54 53 PREDOMINANT LAND USE
52 51 SINGLE FAMILY RESIDENTIAL
50 MULTI-FAMILY RESIDENTIAL
49 COMMERCIAL
48 OFFICE
47 INDUSTRIAL
46 SCHOOL
45 PARK
44 PLACE OF WORSHIP
43 ON STREET PARKING
42 41 HEAVY
40 MODERATE
39 LIGHT
-- NO PARKING
38 37 ROADWAY GEOMETRY
36 35 SEGMENT LENGTH (FEET): 7260
34 WIDTH (FEET) 24'
33 MEDIAN: No
32 3 NUMBER OF LANES: 2
31 6 BIKE LANES No, but bike sharrows
30 15 AVERAGE DAILY TRAFFIC (ADT) 6,000
29 14
28 15
COLLISIONS
27 12
26 10 YEAR 2020 2021 2022 2023 2024
25 NUMBER 0 0
24 4 DUE TO SPEEDING 0 0
23 1
22 21 1 COMMENTS:
20 The 85th percentile speed of 32 mph indicates a speed limit of 30mph, per CV Section 22358.6(a) which requires rounding to the nearest 5 mph. Recommendation - No change in the existing speed limit is 19 recommended.
18 17
16 15
14 Recommended Speed Limit: 30 mph
13 I certify this document is true and accurate
12 Signed: Date: 9/11/2025
Rober
11 103 Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY
LOCATION: Atherton Avenue SURVEY DATE: 8/12/2025
LIMITS: Between Stevenson Lane and El Camino Real (SR82)
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
61 85th PERCENTILE 32 MPH AVERAGE SPEED 28 MPH
60 59 10 MPH PACE SPEED 24 MPH 33 MPH MPH
58 % UNDER PACE % IN PACE 86.0% % OVER PACE 11.0%
57 56
55 ROADSIDE CONDITIONS
54 53 PREDOMINANT LAND USE
52 51 SINGLE FAMILY RESIDENTIAL
50 MULTI-FAMILY RESIDENTIAL
49 COMMERCIAL
48 OFFICE
47 INDUSTRIAL
46 SCHOOL
45 PARK
44 PLACE OF WORSHIP
43 ON STREET PARKING
42 41 HEAVY
40 MODERATE
39 LIGHT
38 3 NO PARKING
37 2
ROADWAY GEOMETRY
36 35 3 SEGMENT LENGTH (FEET): 2280
34 3 WIDTH (FEET) 24'
33 4 MEDIAN: No
32 8 NUMBER OF LANES: 2
31 6 BIKE LANES No, but bike sharrows
30 13 AVERAGE DAILY TRAFFIC (ADT) 6,173
29 5
28 12
COLLISIONS
27 16
26 6 YEAR 2020 2021 2022 2023 2024
25 11 NUMBER 2
24 5 DUE TO SPEEDING 0 1-UNK, 0
23 3
22 21
20 18
17 given: 1)Driver's ability to see vehicles entering from side streets and set back driveways is limited by grade of roadwa 16 ind/or existing landscaping: 2) substantial bicycle and pedestrian traffic in the roadway due to lack of sidewalk 15 14 Recommended Speed Limit: 25 mph
13 I certify this document is true and accurate
12 Signed: Date: 9/11/2025
11 Rober Ovadia, P.E.
100 Atherton Public Works Director
Town of Atherton
Department of Public Works
93 Station Lane - Atherton, California 94027
Radar Speed Survey
SURVEY SURVEY
LOCATION: Elena Avenue DATE: 8/12/2025
LIMITS: Between Atherton Avenue and Valparaiso Avenue
VEHICLE POSTED
SPEED TOTAL sPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
69 85th PERCENTILE 33 MPH AVERAGE SPEED 28 MPH
68 67 10 MPH PACE SPEED FROM 25 MPH TO 34 MPH MPH
66 % UNDER PACE 15.0% % IN PACE 75.0% % OVER PACE 10.0% 65 64
63 ROADSIDE CONDITIONS
62 61 PREDOMINANT LAND USE
60 59 SINGLE FAMILY RESIDENTIAL
58 MULTI-FAMILY RESIDENTIAL
57 COMMERCIAL
56 OFFICE
55 INDUSTRIAL
54 SCHOOL
53 PARK
52 PLACE OF WORSHIP
51 ON STREET PARKING
HEAVY
48 MODERATE
47 LIGHT
46 NO PARKING
45 ROADWAY GEOMETRY
44 43 SEGMENT LENGTH (FEET): 4475'
42 WIDTH (FEET) 24'
41 MEDIAN: No
40 NUMBER OF LANES: 2
39 2 BIKE LANES No, but bike sharrows
38 AVERAGE DAILY TRAFFIC (ADT) 2876
37 36 5
COLLISIONS
35 3
34 5 YEAR 2020 2021 2022 2023 2024
33 6 NUMBER
32 8 DUE TO SPEEDING
31 5
30 29 4
28 10
27 13
26 5
25 10
4 from the 85th percentile speed.
24 Recommendation - No change in the existing speed limit is recommended given the proximity to Sacred Heart Schools 4 located on Elena Avenue, which is considered a facility generating high concentrations of bicyclists and pedestrians. 23 The total reduction from the 85th-percentile speed (33 mph) to the proposed speed limit (25 mph) is 8 mph, which is 22 within the allowable maximum reduction of 12.4 mph.
3 20 Recommended Speed Limit: 25 mph
19 I certify this document is true and accurate
100 Signed: Date: 9/11/2025
Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY SURVEY
LOCATION: Fair Oaks Lane DATE: 8/12/2025
LIMITS: Middlefield Rd to El Camino Real/SR82
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
69 85th PERCENTILE 30 MPH AVERAGE SPEED 27 MPH
68 67 10 MPH PACE SPEED FROM 23 MPH 32 MPH MPH
66 % UNDER PACE 5.0% % IN PACE 85.0% % OVER PACE 10.0%
65 64
63 ROADSIDE CONDITIONS
62 61
PREDOMINANT LAND USE
60 59 SINGLE FAMILY RESIDENTIAL
58 MULTI-FAMILY RESIDENTIAL
57 COMMERCIAL
56 OFFICE
55 INDUSTRIAL
54 SCHOOL
53 PARK
52 PLACE OF WORSHIP
51 ON STREET PARKING
50 49 HEAVY
48 MODERATE
47 LIGHT
46 NO PARKING
45 ROADWAY GEOMETRY
44 43 SEGMENT LENGTH (FEET): 3290
42 WIDTH (FEET) 24'
41 MEDIAN: No
40 NUMBER OF LANES: 2
39 BIKE LANES No, but bike sharrows
38 1 AVERAGE DAILY TRAFFIC (ADT) 4,839
37 36
COLLISIONS
35 34 4 YEAR 2020 2021 2022 2023 2024
33 3 NUMBER
32 3 DUE TO SPEEDING
31 30
29 COMMENTS:
28 15 The 85th percentile speed of 30 mph indicates a speed limit of 30 mph. CVC Section 22358.6(b) allows a 27 12 duction of 5 mph from the nearest 5 mph increment of the 85th percentile speed, in compliance wit ection 627 and 22358.5 and the California Manual on Uniform Traffic Control Devices, if the reasons 26 12 the lower speed limit are documented.
25 17 reies entering from ste stret and set back fleways is frited by grade of roway angir en ting 24 23 6
22 2
21 20 2 Recommended Speed Limit: 25 mph
19 1 I certify this document is true and accurate
100 Signed: Date: 9/11/2025
Robert Ovadia, P.E.
Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY
LOCATION: Frederick Ave SURVEY DATE: 8/13/2025
LIMITS: Greenoaks Dr & Ringwood Ave
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
69 85th PERCENTILE 27 MPH AVERAGE SPEED 23 MPH
68 67 10 MPH PACE SPEED FROM 18 MPH 27 MPH MPH
66 % UNDER PACE % IN PACE 83.0% % OVER PACE 15.0%
65 64
63 ROADSIDE CONDITIONS
62 61 PREDOMINANT LAND USE
60 59 SINGLE FAMILY RESIDENTIAL
58 MULTI-FAMILY RESIDENTIAL
57 COMMERCIAL
56 OFFICE
55 INDUSTRIAL
54 SCHOOL
53 PARK
52 PLACE OF WORSHIP
51 ON STREET PARKING
50 49 HEAVY
48 MODERATE
47 LIGHT
46 NO PARKING
45 ROADWAY GEOMETRY
44 43 SEGMENT LENGTH (FEET): 1350
42 WIDTH (FEET) 22
41 MEDIAN: No
40 NUMBER OF LANES: 2
39 BIKE LANES No
38 ADT 1102
37 36
COLLISIONS
35 34 YEAR 2020 2021 2022 2023 2024
33 NUMBER
32 DUE TO SPEEDING 0
31 30 5
29 COMMENTS:
28 The 85th percentile speed of 27 mph indicates a speed limit of 25 mph, per CVC Section 22358.6(a) which requires rounding to 27 the nearest 5 mph. Recommendation-No change in the existing speed limit is recommended. 26 25 11
24 10
23 16
22 8 Recommended Speed Limit: 25 mph
21 20 Signed: Date: 9/11/2025
19 18 5 Atherton Public Works Director
17 16
95 Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY SURVEY
LOCATION: Glenwood Avenue DATE: 8/12/2025
LIMITS: Between Laurel Street and Middlefield Road
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
69 85th PERCENTILE 32 MPH AVERAGE SPEED 28 MPH
68 67 10 MPH PACE SPEED FROM 24 MPH TO 40 MPH MPH
66 % UNDER PACE 5.0% % IN PACE 89.0% % OVER PACE 6.0%
65 64
63 ROADSIDE CONDITIONS
62 61
PREDOMINANT LAND USE
60 59 SINGLE FAMILY RESIDENTIAL
58 MULTI-FAMILY RESIDENTIAL
57 COMMERCIAL
56 OFFICE
55 INDUSTRIAL
54 SCHOOL
53 PARK
52 PLACE OF WORSHIP
51 ON STREET PARKING
50 49 HEAVY
48 MODERATE
47 LIGHT
46 NO PARKING
45 ROADWAY GEOMETRY
44 43 SEGMENT LENGTH (FEET): 2030
42 WIDTH (FEET) 24'
41 MEDIAN: No
40 1 NUMBER OF LANES: 2
39 BIKE LANES No, but bike sharrows
38 AVERAGE DAILY TRAFFIC (ADT) 4,826
37 :
36 COLLISIONS
35 34 YEAR 2020 2021 2022 2023 2024
33 7 NUMBER
1 0 0
32 4 DUE TO SPEEDING
31 7
30 12
29 11
28 14
27 11
26 12
25 Recommendation - no change in speed limit is recommended given: 1)Driver's ability to see vehicles entering from side 24 4
se destrian tate in thray due to ack of ideas way andior existig landscaping, 2) substantal beycle anc 23 3
22 2 Recommended Speed Limit: 25 mph
21 certify this document is true and accura
20 Signed: Date: 9/11/2025
19 Robert Ovadia, P.E.
100 Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY SURVEY
LOCATION: Greenoaks Drive DATE: 8/13/2025
LIMITS: Between James Avenue and Fredrick Avenue
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
61 85th PERCENTILE 26 MPH AVERAGE SPEED 24 MPH
60 59 10 MPH PACE SPEED FROM 18 MPH 27 MPH MPH
58 % UNDER PACE 2.0% % IN PACE 88.0% % OVER PACE 10.0%
57 56
55 ROADSIDE CONDITIONS
54 53 PREDOMINANT LAND USE
52 51 SINGLE FAMILY RESIDENTIAL
50 MULTI-FAMILY RESIDENTIAL
49 COMMERCIAL
48 OFFICE
47 INDUSTRIAL
46 SCHOOL
45 PARK
44 PLACE OF WORSHIP
43 ON STREET PARKING
42 41 HEAVY
40 MODERATE
39 LIGHT
38 NO PARKING
37 ROADWAY GEOMETRY
36 35 SEGMENT LENGTH (FEET): 3825
34 WIDTH (FEET) 22
33 MEDIAN: No
32 NUMBER OF LANES: 2
31 1 BIKE LANES No
30 AVERAGE DAILY TRAFFIC (ADT) 332
29 2
28 2
COLLISIONS
27 2
26 YEAR 2020 2021 2022 2023 2024
25 5 NUMBER 2
24 9 DUE TO SPEEDING 0
23 7
22 3
21 3 COMMENTS:
20 The 85th percentile speed of 26 mph indicates a speed limit of 25 mph, per CVC Section 22358.6(a) 2 which requires rounding to the nearest 5 mph. Recommendation - No change in the existing speed limi 19 is recommended.
18 3
17 16
15 14 Recommended Speed Limit: 25 mph
13 I certify this document is true and accurate
12 Signed: Date: 9/11/2025
11 Robert Ovadia, P.E.
50 Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY
LOCATION: James Avenue SURVEY DATE: 8/13/2025
LIMITS: Between Middlefield Road and Irving Avenue
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
61 85th PERCENTILE 32 MPH AVERAGE SPEED 29 MPH
60 59 10 MPH PACE SPEED FROM 24 MPH 33 MPH MPH
58 % UNDER PACE % IN PACE 87.0% % OVER PACE 7.0%
57 56
55 ROADSIDE CONDITIONS
54 53
PREDOMINANT LAND USE
52 51 SINGLE FAMILY RESIDENTIAL
50 MULTI-FAMILY RESIDENTIAL
49 COMMERCIAL
48 OFFICE
47 INDUSTRIAL
46 SCHOOL
45 PARK
44 PLACE OF WORSHIP
43 ON STREET PARKING
42 41 HEAVY
40 MODERATE
39 LIGHT
38 1 NO PARKING
37 ROADWAY GEOMETRY
36 35 SEGMENT LENGTH (FEET): 4,300
34 NNNAG WIDTH (FEET) 22'
33 MEDIAN: No
32 NUMBER OF LANES: 2
31 BIKE LANES No
30 13 AVERAGE DAILY TRAFFIC (ADT) 1,296
29 14
28 10
COLLISIONS
27 10
26 10 YEAR 2020 2021 2022 2023 2024
25 7 NUMBER
24 2 DUE TO SPEEDING 0 0 0 0
23 4
22 21 COMMENTS:
20 19
18 ower speed limit are documented.
17 Recommendation - No change in the existing speed limit is recommended given: 1)Driver's ability to see 16 vehicles entering from side streets and set back driveways is limited by grade of roadway and/or existing andscaping; 2) substantial bicycle and pedestrian traffic in the roadway due to lack of sidewalks 15 14 Recommended Speed Limit: 25 mph
13 I certify this document is true and accurate
12 Signed: Date: 9/11/2025
11 100 Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY SURVEY
LOCATION: Oak Grove Avenue DATE: 8/25/2025
LIMITS: Between Marcussen Drive and Middlefield Road
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
69 85th PERCENTILE 33 MPH AVERAGE SPEED 30. MPH
68 67 10 MPH PACE SPEED FROM 25 MPH TO 34 MPH MPH
66 % UNDER PACE 0.0% % IN PACE 94.0% % OVER PACE 6.0%
65 64
63 ROADSIDE CONDITIONS
62 61 PREDOMINANT LAND USE
60 59 SINGLE FAMILY RESIDENTIAL
58 MULTI-FAMILY RESIDENTIAL
57 COMMERCIAL
56 OFFICE
55 INDUSTRIAL
54 SCHOOL
53 PARK
52 PLACE OF WORSHIP
51 ON STREET PARKING
50 49 HEAVY
48 MODERATE
47 LIGHT
46 NO PARKING
45 ROADWAY GEOMETRY
44 43 SEGMENT LENGTH (FEET): 850
42 WIDTH (FEET) 24
41 MEDIAN: No
40 NUMBER OF LANES: 2
BIKE LANES Partial (not entire segment in both
39 directions)
38 ADT 7,065
37 36
COLLISIONS
35 34 6 YEAR 2020 2021 2022 2023 2024
33 6 NUMBER 2
32 12 DUE TO SPEEDING
31 12
30 18
29 13
28 13
27 26 8
25 24
23 22
21 20
19 109 Recommended Speed Limit: 25 mph
Signed: Date: 9/11/2025
Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY SURVEY
LOCATION: Oak Grove Avenue DATE: 8/25/2025
LIMITS: Between Greenoaks Drive and Middlefield Road
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
69 85th PERCENTILE 30 MPH AVERAGE SPEED 28 MPH
68 67 10 MPH PACE SPEED FROM 22 MPH 31 MPH MPH
66 % UNDER PACE 2.0% % IN PACE 92.0% % OVER PACE 6.0%
65 64
63 ROADSIDE CONDITIONS
62 61 PREDOMINANT LAND USE
60 59 SINGLE FAMILY RESIDENTIAL
58 MULTI-FAMILY RESIDENTIAL
57 COMMERCIAL
56 OFFICE
55 INDUSTRIAL
54 SCHOOL
53 PARK
52 PLACE OF WORSHIP
51 ON STREET PARKING
50 49 HEAVY
48 MODERATE
47 LIGHT
46 NO PARKING
45 ROADWAY GEOMETRY
44 43 SEGMENT LENGTH (FEET): 3350
42 WIDTH (FEET) 24
41 MEDIAN: No
40 NUMBER OF LANES: 2
39 BIKE LANES No
38 ADT 2,178
37 36 COLLISIONS
35 34 YEAR 2020 2021 2022 2023 2024
33 NUMBER 1 2
32 DUE TO SPEEDING
31 3
30 9
29 7 COMMENTS:
28 10 The 85th percentile speed of 30 mph indicates a speed limit of 30 mph. CVC Section 22358.6(b) allows a 27 4 set and 25 and the Cateria nual on into ali one eve it in reasons for me over speed. 26 6 limit are documented.
25 3
24 2
23 22
21 20 Recommended Speed Limit: 25 mph
19 I certity this document is true and accurate
50 Signed: R₴ Date: 9/11/2025
Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY
LOCATION: Polhemus Avenue SURVEY DATE: 8/15/2025
LIMITS: Between Alameda de las Pulgas and Selby Lane
VEHICLE POSTED
SPEED TOTAL SPEED. 25 WEATHER: Dry & Clear OBSERVER: DV (MPH) VEHICLE LIMIT:
61 85th PERCENTILE 32 MPH AVERAGE SPEED 28 MPH
60 59 10 MPH PACE SPEED FROM 23 MPH TO 32 MPH MPH
58 % UNDER PACE 18.0% % IN PACE 72.0% % OVER PACE 10.0% 57 56
55 ROADSIDE CONDITIONS
54 53
PREDOMINANT LAND USE
52 51 SINGLE FAMILY RESIDENTIAL
50 MULTI-FAMILY RESIDENTIAL
49 COMMERCIAL
48 OFFICE
47 INDUSTRIAL
46 SCHOOL
45 PARK
44 PLACE OF WORSHIP
43 ON STREET PARKING
42 41 HEAVY
40 MODERATE
39 LIGHT
38 1 NO PARKING
37 ROADWAY GEOMETRY
36 35 SEGMENT LENGTH (FEET): 4150
34 1 WIDTH (FEET) 24
33 3 MEDIAN: No
32 6 NUMBER OF LANES: 2
31 8 BIKE LANES No
30 4 AVERAGE DAILY TRAFFIC (ADT) 1,035
29 3
28 5
COLLISIONS
27 1
26 1 YEAR 2020 2021 2022 2023 2024
25 2 NUMBER 1 0 1
24 5 DUE TO SPEEDING Unknown
23 9
22 5
21 4
20 19
18 are documented.
17 Recommendation - No change in the existing speed limit is recommended given: 1) Driver's ability to see vehicles entering from side streets and set back driveways is limited by grade of roadway and/or existing landscaping; 2) 16 substantial bicycle and pedestrian traffic in the roadway due to lack of sidewalks. 15 14 Recommended Speed Limit: 25 mph
13 I certify this document is true and accurate
12 Signed: Date: 9/11/2025
11 vadia, P.E.
61 Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY
LOCATION: Selby Lane SURVEY DATE: 8/14/2025
LIMITS: Between El Camino Real and W. Selby Lane
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
61 85th PERCENTILE 30 MPH AVERAGE SPEED 28 MPH
60 59 10 MPH PACE SPEED FROM 23 MPH 32 MPH MPH
58 % UNDER PACE 0.0% % IN PACE 96.0% % OVER PACE
57 56
55 ROADSIDE CONDITIONS
54 53 PREDOMINANT LAND USE
52 51 SINGLE FAMILY RESIDENTIAL
50 MULTI-FAMILY RESIDENTIAL
49 COMMERCIAL
48 OFFICE
47 INDUSTRIAL
46 SCHOOL
45 PARK
44 PLACE OF WORSHIP
43 ON STREET PARKING
42 41 HEAVY
40 MODERATE
39 LIGHT
38 NO PARKING
37 1 ROADWAY GEOMETRY
36 35 1 SEGMENT LENGTH (FEET): 5280
34 3 WIDTH (FEET) 24
33 MEDIAN: No
32 NUMBER OF LANES:
31 BIKE LANES No, but bike sharrows
30 12 AVERAGE DAILY TRAFFIC (ADT) 4,047
29 14
28 15
COLLISIONS
27 14
26 18 YEAR 2020 2021 2022 2023 2024
25 8 1 1
24 5 DUE TO SPEEDING 1 1 0
23 3
22 21 COMMENTS:
20 The 85th percentile speed of 30 mph indicates a speed limit of 30 mph. CVC Section 22358.6(b) allows a 19 eduction of 5 mph from the nearest 5 mph increment of the 85th percentile speed, in compliance wit Section 627 and 22358.5 and the California Manual on Uniform Traffic Control Devices, if the reasons fo 18 the lower speed limit are documented.
17 rence enterin rom side fred and set ock reway me by are roadway antire to sing 16 15 landscaping; 2) substantial bicycle and pedestrian traffic in the roadway due to lack of sidewalks anc proximity to Adelante-Selby School located on Selby Lane. 14 13
12 Recommended Speed Limit: 25 mph
11 I certify this document is true and accurate
100 Signed: Date: 9/11/2025
Robert-Ovadia, pE
Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY
LOCATION: Selby Lane SURVEY DATE: 8/13/2025
LIMITS: Between West Selby Lane and Atherton Avenue
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
61 85th PERCENTILE 30 MPH AVERAGE SPEED 26 MPH
60 59 10 MPH PACE SPEED FROM 22 MPH 31 MPH I MPH
58 % UNDER PACE 8.0% % IN PACE 86.0% % OVER PACE 6.0%
57 56
55 ROADSIDE CONDITIONS
54 53
PREDOMINANT LAND USE
52 51 SINGLE FAMILY RESIDENTIAL
50 MULTI-FAMILY RESIDENTIAL
49 COMMERCIAL
48 OFFICE
47 INDUSTRIAL
46 SCHOOL
45 PARK
44 PLACE OF WORSHIP
43 ON STREET PARKING
42 41 HEAVY
40 MODERATE
39 LIGHT
38 3 NO PARKING
37 2
ROADWAY GEOMETRY
36 35 3 SEGMENT LENGTH (FEET): 2280
34 3 WIDTH (FEET) 24'
33 4 MEDIAN: No
32 8 NUMBER OF LANES: 2
31 6 BIKE LANES No, but bike sharrows
30 13 AVERAGE DAILY TRAFFIC (ADT) 6,173
29 5
28 12
COLLISIONS
27 16
26 6 YEAR 2020 2021 2022 2023 2024
25 11 NUMBER 0
DUE TO SPEEDING 1
24 5
23 3
22 21 COMMENTS:
20 The 85th percentile speed of 30 mph indicates a speed limit of 30 mph. CVC Section 22358.6(b) allows a reduction of 5 mph from the nearest 5 mph increment of the 85th percentile speed, in compliance with 19 Section 627 and 22358.5 and the California Manual on Uniform Traffic Control Devices, if the reasons for 18 the lower speed limit are documented.
17 Recommendation - No change in the existing speed limit is recommended given: 1) Driver's ability to see 16 vehicles entering from side streets and set back driveways is limited by grade of roadway and/or existing 15 landscaping; 2) substantial bicycle and pedestrian traffic in the roadway due to lack of sidewalks 14 Recommended Speed Limit: 25 mph
13 I certify th document is true and accurate
12 Signed: Date: 9/11/2025
11 Rober Ovadia, P.E.
100 Atherton Public Works Director
Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY
LOCATION: Stockbridge Ave SURVEY DATE: 8/13/2025
LIMITS: Between Alameda de las Pulgas and El Camino Real
VEHICLE POSTED
SPEED TOTAL SPEED 25 WEATHER: Dry & Clear OBSERVER: DV
(MPH) VEHICLE LIMIT:
69 85th PERCENTILE 32 MPH AVERAGE SPEED 27 MPH
68 67 10 MPH PACE SPEED FROM 23 MPH 32 MPH MPH
66 % UNDER PACE 10.0% % IN PACE 74.0% % OVER PACE 15.0% 65 64
63 ROADSIDE CONDITIONS
62 61 PREDOMINANT LAND USE
60 59 SINGLE FAMILY RESIDENTIAL
58 MULTI-FAMILY RESIDENTIAL
57 COMMERCIAL
56 OFFICE
55 INDUSTRIAL
54 SCHOOL
53 PARK
52 PLACE OF WORSHIP
51 ON STREET PARKING
50 49 HEAvY
48 MODERATE
47 LIGHT
46 NO PARKING
45 ROADWAY GEOMETRY
44 43 SEGMENT LENGTH (FEET): 2250
42 WIDTH (FEET) 24
41 MEDIAN: No
40 NUMBER OF LANES: 2
39 BIKE LANES No
38 0 ADT 897
37 2
36 1
COLLISIONS
35 1
34 1 YEAR 2020 2021 2022 2023 2024
33 1 NUMBER 1
32 2 DUE TO SPEEDING 0
31 4
30 2
29 3
28 4
27 4
26 10
25 2 from side streets and set back driveways is limited by grade of roadway and/or existing landscaping; 2) substantial bicycle 24 23 2
22 Recommended Speed Limit: 25 mph
21 I certify this document is true and accurate
20 1 Signed: Date: 9/11/2025
19 1 Robert Ovadia, P.E.
18 2 Atherton Public Works Director
17 1
47 Town of Atherton
Department of Public Works
80 Fair Oaks Lane - Atherton, California 94027
Radar Speed Survey
SURVEY
LOCATION: Walsh Road SURVEY DATE: 8/13/2025
LIMITS: Between Alameda de las Pulgas and Valley Road
VEHICLE POSTED
SPEED TOTAL SPEED. 30 WEATHER: Dry & Clear OBSERVER: DV (MPH) VEHICLE LIMIT:
61 85th PERCENTILE 31 MPH AVERAGE SPEED 27 MPH
60 59 10 MPH PACE SPEED FROM 23 MPH TO 32 MPH MPH
58 % UNDER PACE 3.0% % IN PACE 90.0% % OVER PACE 6.0%
57 56
55 ROADSIDE CONDITIONS
54 53
PREDOMINANT LAND USE
52 51 SINGLE FAMILY RESIDENTIAL
50 MULTI-FAMILY RESIDENTIAL
49 COMMERCIAL
48 OFFICE
47 INDUSTRIAL
46 SCHOOL
45 PARK
44 PLACE OF WORSHIP
43 ON STREET PARKING
42 41 HEAVY
40 MODERATE
39 LIGHT
38 NO PARKING
37 ROADWAY GEOMETRY
36 35 SEGMENT LENGTH (FEET): 5,200
34 1 WIDTH (FEET) 22
33 2 MEDIAN: No
32 4 NUMBER OF LANES:
31 11 BIKE LANES
30 AVERAGE DAILY TRAFFIC (ADT) 1,480
29 7
28 15
COLLISIONS
27 12
26 18 YEAR 2020 2021 2022 2023 2024
25 13 NUMBER
24 5 DUE TO SPEEDING
23 4
22 21 - - COMMENTS:
20 The 85th percentile speed of 31 mph indicates a speed limit of 30 mph. CVC Section 22358.6(b) allows a 19 reduction of 5 mph from the nearest 5 mph increment of the 85th percentile speed, in compliance with Section 627 and 22358.5 and the California Manual on Uniform Traffic Control Devices, if the reasons for the 18 lower speed limit are documented.
17 Recommendation - Reduce speed limit to 25 mph given: 1) Driver's ability to see vehicles entering from side 16 streets and setback driveways is limited by grade of roadway and/or existing landscaping; 2) substantial 15 bicycle and pedestrian traffic in the roadway due to lack of sidewalks. 14 Recommended Speed Limit: 25 mph
13 12 Signed: Date: 9/11/2025
11 Robert Quadia,
105 Atherton Public Works Director