The speed limit on the Conestoga Parkway is 90 km/h (55 mph). From its completion in the late 1960s its speed limit was 100 km/h, but the limit was lowered in the late 1990s due to collisions across the grass median (since replaced with Ontario tall-wall). Highway 7/8 between Courtland Avenue and Fischer-Hallman Road has an abnormally narrow median, and overpasses are single structures with simple curbs as median dividers instead of the usual Jersey barrier or Ontario tall-wall. The portion of Highway 7/8 (from Trussler Road to Wilmot Centre Road/Foundry Street) which was converted into a freeway in the 1990s does not have this deficiency, nor do the portions of the Parkway signed as Highways 7 and 85.