In good Alberta, Canada, it's generally 50Kmh (30mph) in town, 90Kmh (56mph) on non-freeway out of town roads and 110Kmh (70mph) on freeways...but most people seem to travel at 10-20Kmh over the limit out of town. In the UK it's 70Mph on the Motorway (freeway) but most cars cruise at 80-85 and provided you don't go over 100 and you do slow down if you see the cops, you won't be bothered...however speed through road-works and you will be booked!!