The speed limit on Kentucky's multi-lane, limited-access parkways and interstate highways outside metropolitan areas is 65 miles per hour (104 kilometers per hour). On Kentucky's two-lane parkways, and the open road, the speed limit is 55 miles per hour (88 kilometers per hour) unless otherwise posted. Speed limits within city limits are 25 miles per hour (40 kilometers per hour) or 35 miles per hour (56 kilometers per hour) unless otherwise posted. School Zones are enforced during such time as the flashing yellow lights are displayed. Fines for speeding in works zones are doubled.