This R15-4a sign provides critical guidance for road users in areas with dedicated light rail transit lanes. Constructed from durable aluminum with high-intensity reflective materials, the sign meets all DOT and MUTCD federal and state standards for visibility and compliance. The sign clearly indicates that the right lane is exclusively for light rail transit vehicles, helping to prevent potential traffic conflicts and improve overall road safety. Its diamond grade reflective surface ensures maximum legibility during day and night, effectively communicating lane restrictions to drivers in busy urban and transit corridor environments.