Which traffic code provision governs left turns at signal-controlled intersections? Keller v. Martinez Explained

In Keller v. Martinez, the Utah Court of Appeals clarified which provision of the Utah Traffic Code applies when determining right-of-way duties for left-turning vehicles at signal-controlled intersections. This decision provides important guidance for practitioners handling traffic accident cases involving competing statutory provisions.

Background and Facts

Larry Keller and Gerardo Martinez collided in a signal-controlled intersection on Redwood Road in Taylorsville. Keller was traveling northbound through the intersection while Martinez was turning left from the southbound lane into a school parking lot. Both drivers claimed to have had the right-of-way. Martinez testified that he turned left on a green left-turn arrow, while Keller claimed he proceeded on a green light. The district court found Martinez’s testimony credible and dismissed both parties’ negligence claims.

Key Legal Issues

The central issue was whether Utah Code section 41-6a-903, which generally requires left-turning vehicles to yield to any approaching vehicle, or section 41-6a-305, which specifically governs signal-controlled intersections, controlled the right-of-way determination. Keller argued that section 903 required Martinez to yield regardless of traffic signal colors, while Martinez contended that section 305 applied and he had the right-of-way with a green arrow.

Court’s Analysis and Holding

The Court of Appeals applied the fundamental principle of statutory construction that specific statutes control over general ones. Section 305 specifically addresses signal-controlled intersections, while section 903 provides general right-of-way rules for situations not subject to more specific regulation. Because the accident occurred at a signal-controlled intersection, section 305 applied. Under that provision, a driver with a green left-turn arrow need only yield to traffic “lawfully using the intersection,” and a driver running a red light is not lawfully using the intersection.

Practice Implications

This decision emphasizes the importance of precise statutory analysis in traffic accident cases. Practitioners must carefully identify which specific provisions of the Utah Traffic Code apply to the circumstances rather than relying on general principles. The ruling also demonstrates how credibility determinations in bench trials can be outcome-determinative, particularly when traffic signal conditions are disputed.