Abstract: A yieldable roadway signing and delineating apparatus is disclosed. A standard is positioned at a safe distance from the roadway to avoid snowplows, mowers and other errant vehicles. A horizontal moveable arm extends toward the roadway and carries a sign at its free end, thus placing the sign or delineator at the required position near the roadway for viewing by passing vehicle operators. Means for moveably retaining the arm in a desired position, permitting its deflection by pressure, and returning the arm to the desired position upon release of pressure are provided. Thus, the sign can yield to pressure from snowplow and mower attachments with a minimum or no damage to the sign. A delayed action mechanism is provided wherein a sealed fluid filled canister is eccentrically positioned around a shaft to which a gate is pivotally attached.