Quasi-Delict Liability in Vehicular Accidents: What the Supreme Court Ruling Means

The Supreme Court recently affirmed that a driver who overtakes another vehicle on the shoulder of a national highway can be held negligent and liable for damages arising from a vehicular collision. In Laza v. Standard Insurance Co., Inc. (G.R. No. 279772, June 29, 2026), the Court denied the petition of the driver and vehicle owner, upholding the findings of the lower courts that the driver's negligence was the proximate cause of the accident. The ruling is a useful reminder of how Philippine courts apply the law on quasi-delicts, negligence, and vicarious liability in motor vehicle accidents.

The Facts of the Case

The case stemmed from a collision on November 6, 2014, along the National Highway in Barangay Urayong, Bauang, La Union. Peter Paul Nang was driving a Honda CR-V southbound when he signaled to turn left across the northbound lane to enter a property. A Nissan Sentra on the opposite lane slowed down and blinked its headlights, signaling that it was giving way to Nang.

Meanwhile, Danilo Agpoon was driving a Toyota Innova northbound. Instead of staying in his lane, Agpoon overtook the Sentra on the right shoulder of the road at an accelerated speed. The Innova then hit the CR-V, causing damage to both vehicles.

Standard Insurance Co., Inc., which insured Nang's CR-V, paid PHP 270,509.42 for repairs. As subrogee of Nang's rights, the insurer filed a complaint for recovery of sum of money based on quasi-delict against Agpoon and Mark Laza, the registered owner of the Innova.

The Issue

The central issue was whether the Court of Appeals erred in affirming the Regional Trial Court's ruling that Agpoon was negligent and liable for damages, with Laza vicariously liable as the vehicle owner.

The Supreme Court's Ruling

The Supreme Court denied the petition, ruling that the issues raised—who was negligent and whether there was a traffic violation—were factual questions that the Court does not review in a petition for review on certiorari under Rule 45 of the Rules of Court.

The Court emphasized that a petition under Rule 45 must raise only questions of law. The petitioners failed to show that the lower courts acted capriciously or arbitrarily, or that they committed any grave abuse of discretion.

Applying the Law on Quasi-Delicts

The Court applied Article 2176 of the Civil Code, which provides that whoever by act or omission causes damage to another, there being fault or negligence, is obliged to pay for the damage done. To sustain a quasi-delict claim, three requisites must concur:

1. Damage suffered by the plaintiff;
2. Fault or negligence of the defendant; and
3. A connection of cause and effect between the fault or negligence and the damage—known as proximate cause.

The Court defined negligence as the failure to observe that degree of care, precaution, and vigilance which the circumstances justly demand for the protection of another person's interests. The test is whether the defendant used reasonable care and caution that an ordinary person would have used in the same situation.

Negligence Established

The Court found that Standard Insurance sufficiently proved all three requisites. The CR-V sustained damages from the incident. Agpoon himself admitted that he was overtaking a vehicle on the left and returning to his lane when Nang suddenly made a U-turn. The Court agreed with the lower courts that Agpoon's act of overtaking on the shoulder—a violation of Section 52 of Republic Act No. 4136 (the Land Transportation and Traffic Code)—constituted negligence that was the proximate cause of the accident.

The petitioners argued that Nang violated traffic rules by making a sudden U-turn. However, the Court rejected this argument. The evidence showed that Nang had already occupied a substantial portion of the opposite lane when making his turn, and a vehicle on the northbound lane had even blinked its headlights to give way. The petitioners' claims were self-serving and unsupported by evidence.

Vicarious Liability of the Vehicle Owner

The Court also affirmed Laza's vicarious liability as Agpoon's employer under Article 2180 of the Civil Code. This provision holds employers solidarily liable for damages caused by their employees acting within the scope of their assigned tasks.

Damages and Interest

The Court sustained the award of PHP 270,509.42 as actual damages, proven by documentary evidence of the actual repair costs. It also affirmed the award of PHP 30,000.00 in attorney's fees, noting that Standard Insurance was compelled to engage counsel to recover the amount due. Consistent with prevailing jurisprudence, the Court upheld the imposition of 6% legal interest per annum.

Practical Takeaways

• Overtaking on the shoulder is risky and can constitute negligence. Drivers who overtake on the right shoulder of a highway violate traffic regulations and may be presumed negligent under Article 2185 of the Civil Code.

• The right of way rule is not absolute. A vehicle making a U-turn that has already occupied a substantial portion of the opposite lane may have the right of way over an oncoming vehicle.

• Vehicle owners can be vicariously liable. Under Article 2180 of the Civil Code, employers and vehicle owners may be held solidarily liable for damages caused by their drivers.

• Insurers can recover as subrogees. After paying a claim, an insurance company may step into the shoes of the insured and file a recovery action against the negligent party.

• Rule 45 petitions are limited to questions of law. Factual findings of lower courts, especially when uniform, are generally binding on the Supreme Court.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.