Road Design Aids (RDAs) provide a quick and consistent way to share road design information with construction and design professionals across the state. While RDAs are not formal policy, they offer helpful guidance such as responses to frequently asked questions, good‑practice recommendations, and other topics relevant to roadway design. The goal is to reduce uncertainty about the Department’s preferences and support more uniform, high‑quality road plans statewide.
100 - General
103 - Plan Development
309 - Interchanges
