Who’s at fault · Rear-end collision

What Happens After Being Rear-Ended

AccidentLawyerReview Editorial Team · Updated 29 August 2026

A rear-end crash generates a record in a fixed order: what the officer writes on the crash report, what the vehicles hold, and what state law requires a driver to file. Each part has a different lifespan. Event data recorders lock deployment events but may overwrite others, roughly a third of these vehicles are towed away, and statutory reporting windows run from the crash date, not from when anyone decides to act.

AccidentLawyerReview is not a law firm. This is general information about how this situation is usually handled — not legal advice about a specific crash.

A rear-end collision produces three separate records, made by different people at different speeds. There is the crash report a responding officer writes, the data held inside the vehicles, and whatever the state requires a driver to file. The useful thing to understand about the sequence is not the order in which they are created — it is the order in which they expire. This page sets out what each one contains and when it stops being obtainable, from the federal crash file and from the statutes we have read in full. It is a description of the process, not a direction to anyone in it.

What the scene record captures

Where an officer attends, the contents of the report are fixed by statute rather than left to the officer. Florida sets them out explicitly, and the list is a fair guide to what this class of document holds anywhere. A Florida Traffic Crash Report, Long Form must include the date, time and location of the crash; a description of the vehicles involved; the names and addresses of the parties, with each driver and passenger tied to the vehicle they were in; the names and addresses of witnesses; the investigating officer’s name, badge number and agency; and the names of the insurance companies for the respective parties (Fla. Stat. § 316.066(1)(b)). Each party must provide proof of insurance to the officer, and that too is recorded on the report.

Which of the two reports gets written is also statutory. The Long Form is required where the crash resulted in death or personal injury, or “any indication of complaints of pain or discomfort by any of the parties or passengers”; involved a violation of s. 316.061(1) or s. 316.193; rendered a vehicle inoperable to a degree that required a wrecker to remove it from the scene; or involved a commercial motor vehicle (§ 316.066(1)(a)). Below those thresholds the officer completes a short-form report or provides a driver exchange-of-information form (§ 316.066(1)(c)).

The wrecker threshold is worth reading against the crash data, because it is not a rare trigger. In CRSS 2023, at least one vehicle was towed from the scene in 31.5% of rear-end crashes.

What the vehicles hold, and for how long

Event data recorders are the part of the record most often assumed to be permanent and most often lost. Federal rules describe them precisely.

49 CFR Part 563 applies to passenger cars, multipurpose passenger vehicles, trucks and buses of 8,500 lb GVWR or less, and 5,500 lb unloaded weight or less, manufactured on or after 1 September 2012, if they are equipped with an event data recorder (§ 563.3). The rule does not require a vehicle to carry one; it says what one must record if fitted. In CRSS 2023, 63.8% of the vehicles in rear-end crashes that carried a usable model year were 2013 or later, so the majority of this fleet falls inside the rule’s reach.

What a covered EDR records is set out in Table I to § 563.7(a), and the pre-crash window is narrower than the phrase “event data recorder” suggests. Vehicle speed, engine throttle or accelerator position, and service brake status are each recorded over the interval −5.0 to 0 seconds relative to time zero, at two samples per second — ten readings of each — for any recorder built before 1 September 2031, which covers the fleet on the road today. Table I’s wider window, −20 to 0 seconds at ten samples per second, phases in from vehicles manufactured on or after 1 September 2028, starting at 25% of each manufacturer’s production (footnote 4 to Table I). Longitudinal delta-V is recorded separately, from 0 to 250 milliseconds at 100 samples per second. The owner’s manual statement mandated by § 563.11 puts the scale of it in plain words: the recorder holds data “for a short period of time, typically 30 seconds or less”.

Two provisions govern whether that data survives. Under § 563.9(a), the memory for an air-bag deployment event must be locked to prevent any future overwriting. Under § 563.9(b)(2), an event that did not deploy an air bag has no such protection: where no empty buffer is available, the manufacturer may overwrite the earlier non-deployment record with a later one. A rear-end impact below the deployment threshold therefore sits in memory that a subsequent event is permitted to erase. Separately, § 563.12 requires each manufacturer to ensure a commercially available retrieval tool exists no later than 90 days after the vehicle’s first sale — so the constraint on reading an EDR is normally physical access to the vehicle, not the existence of a tool. That is the link back to the tow figure above: roughly a third of these vehicles leave the scene on a truck.

Two further parts of the record have no federal retention rule at all. Brake-lamp condition is checkable at the scene and hard to establish afterwards. Footage from municipal and commercial camera systems is retained on whatever cycle the operator sets, which is a matter of local policy rather than of uniform law.

Getting hold of the crash report

Access to the report is itself regulated, and Florida is again the clearest worked example. Crash reports revealing the identity, address, telephone number or other personal information of the parties are confidential and exempt from the public records law for 60 days after the report is filed (§ 316.066(2)(a)). Within that window they may be released immediately to a defined list: the parties involved, their legal representatives, their licensed insurance agents, their insurers or insurers to which they have applied for coverage, law enforcement, victim services programmes, and government agencies (§ 316.066(2)(b)).

There is also a gatekeeping step that surprises people. As a condition of access, a requester must present a valid driver licence or other photographic identification and file a written sworn statement that the information will not be used for any commercial solicitation of accident victims, or knowingly disclosed to a third party for that purpose — sworn separately for each individual report requested (§ 316.066(2)(d)).

The clocks written into state law

Reporting duties are state law, and the thresholds differ. Below are the four we have read in full, plus the one federal deadline that touches the vehicle record. Other states set other numbers; this is a sample, not a national rule.

Statutory windows, each read from the primary source cited in Sources below. Thresholds and deadlines vary by state — these two are the jurisdictions verified for this page.

What the national file records about the aftermath

The CRSS sample describes what actually happens across 1.75 million rear-end crashes a year, which is a more reliable guide to the ordinary case than any single account of one.

Computed from the CRSS 2023 national file, MANCOL_IM = 1 (Front-to-Rear), weighted by WEIGHT; unweighted sample 12,679 crashes. Our weighting reproduces NHTSA's published total of 6,138,359 police-reported crashes exactly.

Three rows are worth reading together. The gap between 26.4% and 9.6% means that in most rear-end crashes where an injury was recorded at all, nobody was carried away by ambulance — so the medical record and the crash record commonly start in different places, days apart. The tow figure means the vehicle, and the recorder inside it, frequently leaves the scene before anyone has decided the data matters. And in 13.4% of these crashes a vehicle left the scene altogether, which removes the other driver’s identity from the record before any of the above applies.

Keyword set verified against live search results on 2026-08-29.