Zoe Haines v Ross Talbott

In assessing road-traffic liability, a driver who encounters drifting and thickening smoke in fading light must reduce speed sufficiently to react to an unseen hazard and take further action when warning signs develop. The sudden-emergency doctrine does not excuse a failure to respond where the driver has had such warning.

For contributory negligence, the court must assess the claimant’s conduct in the round, considering both blameworthiness and causative potency under the Law Reform (Contributory Negligence) Act 1945. An emergency remains relevant to blameworthiness even when the claimant’s earlier negligence created it. An inexperienced driver or vehicle owner is held to the same objective standard as an experienced one. The defendant bore 70% and the claimant 30% of the responsibility.

The claim concerned a collision on an unlit dual carriageway. The claimant’s car emitted dense smoke after she substantially overfilled its engine with oil, stopped partly in the inside lane, and exited through the driver’s door. The defendant’s van entered the densest smoke and collided with the open door and the claimant.

Liability was ordered to be tried as a preliminary issue. The central questions were whether the defendant responded reasonably to the developing hazard and whether the claimant was contributorily negligent in creating the smoke, stopping position, lighting, and manner of exit. The court also had to apportion responsibility under section 1(1) of the Law Reform (Contributory Negligence) Act 1945.

The court found Mr Talbott negligent and apportioned responsibility for the accident 70% to him and 30% to Ms Haines. Liability was determined as a preliminary issue.

1. Mr Talbott’s driving. Although experts identified ways in which the collision could have been avoided, the issue was whether he should have acted. He knew of drifting smoke and should have recognised its increasing density. The braking and movement of vehicles ahead into the outside lane were further warnings of a hazard in the inside lane. On an unlit road in fading daylight, a reasonable driver had to slow enough to react to anything picked out by the headlights and to reduce to a safe speed if visibility worsened. His assumption that the source would be a visible vehicle that could be overtaken was unreasonable, so the circumstances did not amount to a sudden emergency.
2. Ms Haines’ standard of care. Her substantial overfilling of the engine was negligent, and the resulting smoke and breakdown were foreseeable. The court rejected the submission that her youth, inexperience or alleged lack of funds justified a lower standard. The objective standard applied to safety-critical vehicle maintenance, as well as driving, by analogy with Nettleship v Weston [1971] 2 QB 691. An inexperienced owner unable to maintain a vehicle competently must obtain appropriate help.
3. Contributory negligence. Under section 1(1) of the Law Reform (Contributory Negligence) Act 1945, the court had to make a just and equitable assessment having regard to blameworthiness and causative potency. The emergency remained relevant to blameworthiness even though Ms Haines’ negligence had created it. Failure to use hazard lights and to leave the headlights and rear lights on was negligent but had no causative effect through the dense smoke. By contrast, failing to pull fully off the road and leaving through the driver’s door was not blameworthy in the circumstances, but was causally significant. The acts had to be assessed in the round.
4. Orders. The claimant therefore succeeded on liability, subject to 30% contributory negligence. Further submissions on consequential directions and permission to appeal were adjourned. Time for filing and serving any notice or application for permission to appeal was extended to 21 days after the decision on permission.

By an order sealed on 9 July 2025, Master Gidden ordered that liability be tried as a preliminary issue. No appellate history is stated.