Crash on Grand Av at Rolling Knoll Rd, Diamond Bar, California

Wednesday, February 5, 2025 at 2:13 PM

Injury crash2 vehicles

Reporting agency: Los Angeles County Sheriff's Office
Report number: 925-00894-2925-471

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

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Where and when

Location: Grand Av at Rolling Knoll Rd
City, county: Diamond Bar, Los Angeles County
Collision type: Side Swipe
Motor vehicle involved with: Other Motor Vehicle
Weather: Clear
Light: Daylight
Road surface: No Unusual Conditions
Hit and run: No
People involved: 3
Injured: 1
Killed: 0

Vehicles and people

Damage area not recorded

Unit 1: 2018 Land Rover

Sport Utility Vehicle

Direction of travel: South
Maneuver: Proceeding Straight

Driver, maleRestraint: Occupant Lap Belt Used. Airbag: Air Bag Not Deployed
Not injured

Damage area not recorded

Unit 2: 2017 Toyota

Sport Utility Vehicle

Direction of travel: North
Maneuver: Making Left Turn

Driver, femaleRestraint: Occupant Lap Belt Used. Airbag: Air Bag Not Deployed
Not injured
Passenger, female, 75Restraint: Occupant Lap Belt Used. Airbag: Air Bag Deployed
Possible injury

Nearby and recent

17 crashes recorded on Grand Av in Diamond Bar in the last 12 months, 6 with injuries.

Feb 28, 2025, SR-60 W/B (Pomona Fwy) at Grand Ave3 vehicles, 1 injuredInjury crash
Feb 25, 2025, Grand Av at Rolling Knoll Rd2 vehicles, 2 injuredInjury crash
Feb 22, 2025, SR-60 W/B (Pomona Fwy) at Grand Ave2 vehicles, 1 injuredInjury crash
Feb 13, 2025, Grand Av at Montefino Av2 vehicles, 1 injuredInjury crash
Feb 13, 2025, Diamond Bar BL at Montefino Av2 vehicles, 1 injuredInjury crash

All Diamond Bar crashes, February 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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