The speed limit signs in Mississauga are given in km/h and are 40 km/h (24 mph) in school areas and 50 km/h (31 mph) in the city, unless indicated differently. When leaving the city, drivers can speed up to 80 km/h (50 mph) on most country highways and 100 km/h (62 mph) on freeways. Search rental cars on KAYAK