Throughout the state of Ontario, the speed limit in urban areas such as residential or commercial roads is 50 km/h (31 mph). Be wary of school zones as the speed limit decreases to 40 km/h (24 mph). Freeways can range from 80 km/h (49 mph) to 100 km/h (62 mph), depending on the location and lanes available, so it is best to always check the indicated signage. Search rental cars on KAYAK