Bilateral safeguard duration limits impose a short-term cap, allow rare extensions, and require an equivalent cooling-off period before reapplication. Bilateral safeguard measures must be limited to what is necessary to prevent or remedy serious injury and to facilitate adjustment; initial imposition is subject to a short-term cap, with possible exceptional extension on the Director General's recommendation, but the total duration including extensions is capped. Reapplication to the same originating good is prohibited for a period equal to the prior application, provided the intervening non-application lasts at least a one-year cooling-off period.