The speed limits in Canada vary depending on the province or territory, as each has its own specific regulations. Generally, exceeding the speed limit is considered a traffic violation and can result in fines, demerit points on your driver's license, and potential license suspension or other penalties.
In most Canadian provinces and territories, there is a general rule that driving up to 15 km/h (9 mph) over the posted speed limit is typically tolerated before enforcement measures are taken. However, it's important to note that this is not a legally defined "buffer" or universally applicable rule. Law enforcement officers have the discretion to issue tickets for any amount over the posted limit, even if it is within the commonly tolerated range.
It is always advisable to adhere to the posted speed limits and drive at a safe and appropriate speed for the road and weather conditions. It's important to check the specific speed limit regulations in your province or territory, as well as any local variations or exceptions that may apply.