Skid marks fade within days. Surveillance footage gets overwritten on a 72-hour loop. The event data recorder inside the other driver’s vehicle can have its crash data overwritten the next time someone turns the ignition. When a serious collision happens on I-5 near Redding or on one of Shasta County’s unincorporated back roads, the clock on preserving what matters starts before the tow truck arrives.
At Haslerud Law Office, A Professional Corporation, we’ve handled car accident claims against insurance companies for over 35 years. The cases that reach favorable outcomes almost always share one thing: the injured driver took the right steps early, before the evidence that proves fault disappeared or got explained away.
What follows is a practical breakdown of what evidence actually matters, which agencies have authority over your crash report depending on where in Shasta County the collision happened, and what you need to do before you hand anything over to an insurance adjuster.
What Actually Counts as Evidence After Your Crash
Most people think of photos first, and that instinct is right. But quality matters as much as quantity. Images captured from multiple angles before vehicles are moved, showing road conditions, traffic controls, point of impact, and visible injuries, carry far more weight than a few shots of the damage taken in a parking lot the next morning. Video walkarounds of both vehicles, with timestamps intact, are even better.
Witnesses are a resource most drivers underuse. Someone who saw the collision from a nearby parking lot or a following vehicle can confirm speed, lane position, and which driver ran the light. Get their names and phone numbers at the scene, because recollections fade within hours and people become hard to locate once they leave.
Physical evidence gets discarded without a second thought. Torn clothing, damaged personal items, pieces of a vehicle that broke off at the scene are not trash. They’re documentation. Photograph everything before moving it, and hold onto anything portable rather than throwing it away.
Getting the Right Report From the Right Agency
In Shasta County, which law enforcement agency investigated your crash determines where your official collision report comes from, and getting that wrong costs time you may not have.
Collisions inside Redding city limits are handled by the Redding Police Department at 777 Cypress Avenue. If your crash happened on a freeway, a state highway, or any unincorporated road outside Redding, the California Highway Patrol (CHP) Redding Area office has jurisdiction, including the routes connecting Anderson, Shasta Lake, and surrounding communities, as well as portions of Lassen County.
To request a CHP-investigated report, you’ll need to complete Form CHP 190 and submit it at any CHP office, or mail it with a photocopy of your driver’s license to the office that handled the crash. If the collision occurred in an unincorporated part of Shasta County outside CHP jurisdiction, records requests go through the Shasta County Sheriff’s Office Records Division at 300 Park Marina Circle in Redding.
California’s SR-1 Report of Traffic Accident is a separate filing requirement that surprises many drivers. Under California Vehicle Code section 16000, you must file an SR-1 directly with the DMV within 10 days of any crash that caused injury, death, or more than $1,000 in property damage. This obligation exists whether or not a police report was filed and regardless of who was at fault. Missing the deadline can affect your driving privileges.
The Evidence That Disappears the Fastest
The most fragile piece of evidence after a modern collision is data most drivers don’t know exists. Nearly every vehicle built in the last decade contains an event data recorder (EDR), sometimes called a black box, embedded in the airbag control module. In the seconds before and during a crash, the EDR captures speed, braking, throttle position, steering angle, and whether seatbelts were buckled. That data can independently confirm or contradict what any driver claims happened.
Subsequent ignition cycles, battery disconnection, and repair work can all overwrite EDR data, sometimes within days of the crash. Once a vehicle goes to a repair shop or salvage yard, that window closes. Preserving EDR data requires a written preservation demand directed to whoever controls the vehicle (the other driver, their insurance company, or a salvage operator) before any repair or disposal takes place. This is what attorneys mean when they refer to preventing spoliation of evidence: the destruction or alteration of material that a party knew or should have known was relevant to a claim.
Third-party footage has its own short shelf life. Businesses overwrite exterior cameras on rolling loops, often every 48 to 72 hours, and dashcam footage from other vehicles gets recorded over just as quickly. If there’s a gas station, a parking lot camera, or another driver who may have captured the crash, preservation requests need to go out within the first day or two.
Protecting What You’ve Already Gathered
Collecting evidence is only the first step. Keeping it intact and organized is what gives it value when negotiations start.
Back up your photos and videos to a second location (a cloud service, an email to yourself, or an external drive) so a lost or damaged phone doesn’t eliminate your documentation. Make sure the timestamps and location data embedded in the original files aren’t stripped out when you copy them.
A few practices that protect your claim going forward:- Don’t give a recorded statement before you’re ready. Insurance adjusters often call within hours of a crash, before you’ve organized your evidence or had a chance to review what happened. A recorded statement made at that stage can be used to limit what you recover.
- Hold off on vehicle repairs. Once the damage is repaired, the physical evidence of the collision is gone. Get a full photographic record and confirm that any EDR data has been extracted before authorizing repair work.
- Keep a written log. As soon as you’re able, write down everything you remember: road conditions, what the other driver said, where the vehicles ended up, what injuries you felt immediately and in the hours after. Memory is also evidence, and it’s time-sensitive.
California’s comparative negligence rules mean that evidence of the other driver’s fault directly affects how much compensation you can recover. A well-organized evidence file isn’t a minor detail. It’s often the difference between a lowball settlement offer and one that reflects the actual harm you suffered.
The days immediately after a collision are the window that matters most. Once it closes, no attorney can recover evidence that no longer exists. If you’ve been in a crash in the Redding area or elsewhere in Shasta County, we handle preservation letters and insurer communication directly for our clients. Reach us for a confidential consultation at (530) 968-4300.