ATHERTON POLICE DEPARTMENT
Inter-Department Correspondence
To: Chief McCulley
From: Commander Larsen
Date: March 270, 2024
Subject: 2023 ALPR Analysis
OVERVIEW:
During November of 2019, the Town Council approved the lease of 2 fixed ALPR cameras and those 2 ALPR cameras were installed in January of 2020. Since then, the Town's ALPR program continues to grow. Three new cameras will be installed during 2024, which will make a total of 51 cameras. These cameras were strategically placed to add a significant investigative option that assists the department in solving and deterring crime in Atherton's neighborhoods.
ALPR cameras provide law enforcement with a pointer system that can help identify vehicles associated with suspects, witnesses, or victims, and develop exculpatory information that assists with focusing investigative resources. ALPRs collect and store an image of the vehicle, the scanned license plate, and the location of where the image was taken for 30 days.
PLATE READ SUMMARY:
The Flock system retains data over a rolling 30-day period. During the dates of February 27h and March 27%, 2023, there were a total of 4,524,836 ALPR plate reads in the Town of Atherton.
If 4,524,836 is used as an average monthly total and multiplied by 12, there would be approximately 54,298,032 yearly ALPR plate reads in the Town of Atherton. This is an increase of 11,844,300 over the previous year.
Plate Reads Summary
Total Plate Reads: 1 DOWNLOAD SV Feb 27 - Mar 27 Devices (58) - 4,524,836
HOLBROOK PALMER PARK:
During the dates of February 27* and March 27th ", there were a total of 10,698 ALPR plate reads at the entrance of Holbrook Palmer Park. If 10,698 is used as an average monthly total and multiplied by 12, there would be approximately 128,376 yearly ALPR plate reads at the entrance of Holbrook Palmer Park. Flock does not have software that allows for review of ALPR plate reads by time of day.
Plate Reads Summary
Total Plate Reads: DOWHLOAD CSV Feb 27 - Mar 27 Devices (1) - 10,698
Plate Reads By Day
ALPR ALERTS:
During the 2023 calendar year, there were 274 ALPR alerts in Atherton. An ALPR alert is a message that advises users of a stolen vehicle, amber alert, wanted person, or subjects under investigation. Alerts for stolen license plates were turned off due to the high quantity of false stole license plate alerts.
SYSTEM QUERIES:
There was a total of 2,860 search queries of the ALPR system by Atherton PD personnel for the calendar year of 2023. The queries were for investigations into various incidents that included burglary, theft, vandalism, robbery, vehicle code violations, suspicious vehicles, suspicious circumstances, and missing persons.
SUCCESSES:
• On 01/06/23 at 2330 hours, officers responded to Watkins Avenue at El Camino Real regarding an ALPR stolen vehicle activation. Officers located the vehicle and through their investigation, learned the vehicle was recovered by the owner and was later removed from the Stolen Vehicle System (SVS). The vehicle was released to the owner. • On 01/16/23 at 1736 hours, officers responded to El Camino Real at Selby Lane regarding an ALPR stolen vehicle activation. Officers located the occupied stolen vehicle and arrested the driver for possession of stolen property. The vehicle was released to the owner.
• On 01/22/23 at 1600 hours, officers responded to an ALPR wanted vehicle alert. The vehicle was wanted for burglary. The occupied vehicle was located and during the officers' investigation, they located property stolen about an hour prior in a robbery from another jurisdiction. One subject was arrested for a felony warrant and one subject was arrested for misappropriation of property.
• On 02/07/23 at 1544 hours, officers responded to Middlefield Road at Jennings Lane for an ALPR stolen vehicle activation. Officers located the vehicle and through their investigation, they learned the stolen vehicle was fraudulently sold to the driver of the vehicle. The stolen vehicle was recovered and the owner was contacted and advised where they could pick up the vehicle. An outside jurisdiction was contacted to investigate the fraudulent sale of the stolen vehicle.
• On 02/08/23 at 1004 hours, officers responded to Alameda De Las Pulgas at Stockbridge Avenue on an ALPR stolen vehicle activation. Officers located the occupied vehicle and through their investigation, learned the vehicle was recovered by the owner and was later removed from SVS. The vehicle was released to the owner. • On 03/07/23 at 0859 hours, officers responded to Middlefield Road at Ravenwood Avenue on an ALPR stolen vehicle activation. Officers located the occupied vehicle and through their investigation, learned the vehicle was recovered by the owner and was later removed from SVS. The vehicle was released to the owner. • On 03/31/23 at 1457 hours, officers responded to El Camino Real at Walnut Avenue on an ALPR stolen vehicle activation. Officers located the occupied vehicle and detained the driver. An outside agency contacted APD and took over the investigation and arrested the driver.
• On 04/06/23 at 1447 hours, officers responded to El Camino Real at Selby Lane on an ALPR stolen vehicle activation. Officers located the occupied stolen vehicle and arrested the driver for possession of stolen property. The vehicle was released to the owner. • On 05/18/23 at 1220 hours, officers investigated a cold burglary. The ALPR system was used to locate and identify the suspects vehicle.
• On 05/02/23 at 1439 hours, officers responded to Alameda De Las Pulgas at Stockbridge Avenue on an ALPR stolen trailer activation. Officers located the trailer and through their investigation, learned the trailer was fraudulently sold. The stolen trailer was recovered and the owner was contacted and advised where they could pick up the trailer.
An outside jurisdiction was contacted to investigate the fraudulent sale of the stolen vehicle.
• On 05/31/23 at 2323 hours, officers responded El Camino Real and Selby Lane on an ALPR felony vehicle activation. Officers located the felony vehicle and through their investigation, arrested the driver of the vehicle for carrying a loaded concealed weapon, carrying a loaded firearm, and a felony warrant.
• On 06/28/23 at 0927 hours, officers responded to Fredrick Avenue at Ringwood Avenue on an ALPR felony vehicle activation. Officers located the vehicle and conducted a traffic stop. The agency requesting the felony want asked APD officers to identify the driver of the vehicle and release them from the scene.
• On 08/15/23 at 2225 hours, officers responded to El Camino Real at Selby Lane on an ALPR stolen vehicle activation. Officers located the occupied vehicle and through their investigation, arrested the driver of the vehicle for possession of stolen property and two warrants. The vehicle was released to the owner.
• On 09/18/23 at 1247 hours, officers responded to El Camino Real at Selby Lane on an ALPR stolen vehicle activation. Officers located the occupied vehicle and through their investigation, learned the vehicle was recovered by the owner and was later removed from SVS. The vehicle was released to the owner.
• On 12/02/23 at 1638 hours, officers responded to El Camino Real at Selby Lane on an ALPR stolen vehicle activation. Officers located the occupied vehicle and through their investigation, learned the vehicle was recovered by the owner and was later removed from SVS. The vehicle was released to the owner.
SYSTEM CHALLENGES:
The ALPR system only retains data for 30 rolling days, which limits searches to 30 days. If investigators are investigating a crime that occurred over 30 days prior, ALPR data will be lost.
The search feature does not allow searches for the quantity of vehicles traveling at a certain time.
CAMERA LOCATIONS:
1. Holbrook Palmer Park Entrance
2. Holbrook Palmer Park Exit
3. Northbound Middlefield Road at Ravenswood Avenue
4. Eastbound Watkins Avenue at El Camino Real
5. Westbound Fair Oaks Avenue at Middlefield Road
6. Southbound Middlefield Road at Jennings Lane
7. Northbound Alameda De Las Pulgas at Walsh Road
8. Northbound Frederick Avenue at Ringwood Avenue
9. Westbound Selby Lane at Oakwood Boulevard
10. Westbound Alejandra Avenue at El Camino Real
11. Westbound Valparaiso Avenue at El Camino Real
12. Northbound Camino Por Los Arobles at Valparaiso Avenue
13. Eastbound Atherton Avenue at Alameda De Las Pulgas
14. Westbound Atherton Avenue at El Camino Real
15. Westbound Selby Lane at El Camino Real
16. Eastbound Selby Lane at West Selby Lane
17. Eastbound Camino Al Lago at Alameda De Las Pulgas
18. Westbound Isabela Avenue at El Camino Real
19. Glenwood Avenue at Laurel
20. Westbound Marsh Road at Middlefield Road
21. Eastbound Stockbridge Avenue at Alameda De Las Pulgas
22. Eastbound Britton at Alejandra Avenue (Privately Funded)
23. Eastbound Emilie Avenue at Park Lane (Privately Funded)
24. Westbound Alejandra Avenue at Brittany Meadows (Privately Funded)
25. Westbound Winchester Drive at El Camino Real (Privately Funded)
26. Eastbound MacBain Avenue at Emilie Avenue (Privately Funded)
27. Inbound James Avenue (Privately Funded)
28. Inbound Linden Avenue (Privately Funded)
29. Eastbound Oak Grove at Manzanito (Privately Funded)
30. Westbound Oak Grove at Encino Road (Privately Funded)
31. Northbound Lloyden Drive at Fair Oaks Lane (Privately Funded)
32. Eastbound Lloyden Drive at El Camino Real (Privately Funded)
33. Eastbound Wilburn Avenue at El Camino Real (Privately Funded)
34. Westbound Alejandra Avenue at Brittany Meadows (Privately Funded)
35. Westbound Stockbridge Avenue at El Camino Real (Privately Funded)
36. Westbound Almendral Avenue at El Camino Real (Privately Funded)
37. Westbound Tuscaloosa Avenue at El Camion Real (Privately Funded)
38. Westbound Fletcher Drive at Alameda De Las Pulgas (Privately Funded)
39. Westbound Walsh Road at Alameda De Las Pulgas (Privately Funded)
40. Westbound Atherton Avenue at Alameda De Las Pulgas (Privately Funded)
41. Southbound Alameda De Las Pulgas at Stockbridge Avenue (Privately Funded)
42. Eastbound Polhemus Avenue at Alameda De Las Pulgas (Privately Funded)
43. Northbound Elena Avenue at Valparaiso Avenue (Privately Funded)
44. Northbound Santiago Avenue at Valparaiso Avenue (Privately Funded)
45. Northbound El Camino Real at Walnut Avenue, Lanes 1-2 (Privately Funded)
46. Northbound El Camino Real at Walnut Avenue, Lanes 2-3 (Privately Funded)
47. Southbound El Camino Real at Selby Lane, Lanes 1-2 (Privately Funded)
48. Southbound El Camino Real at Selby Lane, Lanes 2-3 (Privately Funded)
49. Westbound Walsh Road at Sargent Lane (Privately Funded & instillation in 2024)
50. Westbound Walsh Road at Reservoir Road (Privately Funded & instillation in 2024)
51. Westbound Walsh Road at Walsh Road (Privately Funded & instillation in 2024)
FLUUU PARK E
North TRIANGLE
Fair Oaks
Bay,
SOUTH
Midteficio LINDENWOOD
FAIR OAKS
PALM PARK
Oaks In Menl
Medi
REDWOOD OAR Fair
MENLO OAI
Menio-Atherton
High School
SOUT
Ateston Ave SEMINI
• DSIDE International:
AZA Headquarters VINTAGI
lassachusetts Ave
W Selby Ln Valporaiso Ave Menlo Park
Selby Ln LINFIELD OAKS
DOWNTOWN Alma St
Sacred Heart High School MENLO PARK DOWNT
Stockbridge Ave NOR
Alameda de las
ALLIED ARTS
• DSIDE General Lot 8(
GHTS
Quarry
West Iris & B. Gerald Cantor
WEST OF THE Center for Visual Arts
ALAMEDA Menlo Park
Campus Drive