Crash on Pathfinder Rd at Brea Canyon Rd (E), Diamond Bar, California

Thursday, December 4, 2025 at 8:15 AM

Property damage only2 vehicles

Reporting agency: Los Angeles County Sheriff's Office
Report number: 925-07849-2927-472

From the CHP CCRS, record last updated October 25, 2026. No changes since first published.

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Where and when

Location: Pathfinder Rd at Brea Canyon Rd (E)
City, county: Diamond Bar, Los Angeles County
Collision type: Side Swipe
Motor vehicle involved with: Other Motor Vehicle
Posted speed limit: 40 mph
Weather: Clear
Light: Daylight
Road surface: No Unusual Conditions
Hit and run: No
People involved: 2
Injured: 0
Killed: 0

Vehicles and people

Damage area not recorded

Unit 1: 2025 GMC Hummer

Black Sport Utility Vehicle

Direction of travel: East
Maneuver: Other Unsafe Turning

Driver, female, 50Restraint: Occupant Lap Shoulder Harness Used. Airbag: Air Bag Not Deployed
Not injured

Damage area not recorded

Unit 2: 2020 Tesla 3

Gray Passenger Car Station Wagon Jeep

Direction of travel: East
Maneuver: Other Unsafe Turning

Driver, male, 54Restraint: Occupant Lap Shoulder Harness Used. Airbag: Air Bag Not Deployed
Not injured

Nearby and recent

14 crashes recorded on Pathfinder Rd in Diamond Bar in the last 12 months, 7 with injuries.

Jan 3, 2026, SR-57 N/B at Cold Springs Ln2 vehicles, 1 injuredInjury crash
Dec 31, 2025, SR-57 S/B (Orange Fwy) at Pathfinder Road1 vehicleProperty damage only
Dec 30, 2025, SR-57 N/B (Orange Fwy) at Diamond Bar Blvd2 vehicles, 2 injuredInjury crash
Dec 30, 2025, SR-60 E/B (Pomona Fwy) at Brea Canyon Rd2 vehiclesProperty damage only
Dec 24, 2025, SR-60 W/B to Brea Canyon Rd at Brea Canyon Rd2 vehiclesProperty damage only

All Diamond Bar crashes, December 2025

About this record

Source: CHP CCRS
Updates: Changes the state makes to this record are applied here when the source publishes them
First published here: October 25, 2026
Last updated: October 25, 2026, no changes recorded
What is left out: Names, addresses, plates, and license and insurance numbers are not in the public data and never appear here

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