Safeguard measures can be applied to curb imports that cause or threaten serious injury to domestic industry. The Central Government may, after enquiry, apply safeguard measures-including safeguard duty, tariff-rate quota, or other measures-where increased imports cause or threaten to cause serious injury to domestic industry; provisional measures may be applied pending final determination with time limits and duty refunds if injury is not established; tariff-rate quota levels and allocation may be regulated by rule; safeguard duty is in addition to other duties; measures normally cease after four years but may be extended within a statutory maximum, and notifications are subject to parliamentary scrutiny.