Certainty is normal and it is not evidence
In most disputed collisions both drivers are entirely sincere. Each experienced the event from a different position, saw a different part of it, and reconstructed the rest afterwards in a way that is internally consistent. Genuine deliberate dishonesty exists but it is not the usual explanation for two irreconcilable accounts.
That is why liability is not resolved by asking who sounds more convincing. It is resolved by working out which account the physical evidence and the road layout can support, and by applying whatever the local law says about priority, duty of care and contributory conduct.
Insurers negotiate because litigation is expensive
The overwhelming majority of liability disputes are settled between insurers without a court ever being involved. Both sides are repeat players who handle thousands of similar files, both know roughly how a given fact pattern is treated, and both know that the cost of arguing can exceed the amount in dispute.
That produces pragmatic outcomes and it produces them faster than a court would. It also means the standard applied is a commercial view of how a case would probably be decided, rather than a decision itself. A policyholder who feels strongly that the outcome is wrong can usually push, and in some markets can complain to an ombudsman or pursue the matter personally, but the practical machinery is negotiation.
There is an asymmetry here that is worth naming rather than glossing over. The insurer is spending its own money and weighing the cost of arguing against the amount at stake, while the policyholder is weighing something else entirely — a no-claims record, a renewal price, and a strong sense of having been in the right. Those two calculations do not always point the same way, and the policy gives the insurer the final say.
The evidence that actually moves an outcome
Not all evidence is treated equally, and the ranking is fairly stable. An independent witness with no connection to either party is the strongest ordinary evidence. Camera footage, from a vehicle or from premises nearby, is stronger still where it captures the impact. Physical damage patterns are powerful because they are hard to argue with: the geometry of a contact says a good deal about angles and relative movement.
Below those sit road layout and signage, which establish who had priority; police reports where one exists; and the drivers’ own statements, which are the weakest because they are the ones in conflict. Telematics data can be decisive where a policy carries it, though what the insurer will disclose and use varies.
Split liability exists because the law usually allows it
Most legal systems permit blame to be apportioned rather than assigned wholly to one side. Where both drivers contributed — one pulled out, the other was travelling too fast for the conditions — an apportionment reflects that, and each insurer pays a share.
An even split is also the common landing point where no evidence resolves the dispute at all. That is not laziness so much as the logical result of two accounts of equal weight and nothing to separate them. It is unsatisfying for whoever is convinced they were blameless, and it is the strongest practical argument for gathering evidence at the scene, because evidence is the only thing that breaks a tie.
Non-fault and blameless are not the same word
The industry uses "non-fault" to mean a claim where the insurer recovered its costs from another party. It is an accounting description, not a moral one, and this causes real confusion. A driver who did nothing wrong but whose incident involved an untraced vehicle, or an uninsured one from which nothing could be recovered, may find the claim recorded as fault.
The label matters because it feeds directly into no-claims standing and into rating at renewal. If liability was genuinely not yours and the record says otherwise, it is worth asking the insurer on what basis the claim was closed and whether recovery was attempted. Records do get corrected, and a claim that later recovers can be reclassified.
What this means while it is happening
Liability decisions take time, sometimes many months, and the silence in between is normal rather than a sign of neglect. Meanwhile the vehicle is repaired or settled under your own cover, the excess is paid, and the recovery runs separately.
The useful posture is evidential rather than argumentative. Statements should be specific about what was observed and explicit about what was not. "I did not see the other vehicle until the impact" is a more valuable sentence in a file than a confident reconstruction that later turns out to be inconsistent with the damage.