Work accident benefits denied if driver's gross negligence was the sole cause of the collision.

The Supreme Court dismissed the Social Insurance Fund's cassation appeal against a lower court ruling that granted work accident benefits to the claimant. The claimant argued that technical defects in his trailer, not his driving violations, contributed to the collision with a train. The court held that because the technical defects could have caused the accident, the driver's traffic law violations were not the sole cause, thus excluding the statutory bar on benefits.