Today in Ontario, Canada's legislature, a proposed law will be introduced for debate which would require auto drivers to leave a minimum distance when passing cyclists.
The law will propose different minimum distances depending on the speed of the overtaking vehicle: 3 feet for speeds under 50 km/h (31 mph), 4 feet for speeds between 50 and 80 km/h (50 mph), and 5 feet for speeds exceeding 80 km/h.
My gut reaction is that this is not likely to be widely enforced and will therefore be ignored. I'm interested in the experience of those who live in jurisdictions with similar laws. Has the introduction of such a law changed the behaviour of drivers where you ride? I'm particularly interested in the experience in Minnesota, Arizona and Wisconsin, which the Arizona Bike Blog says have had these laws for at least 5 years.
For those who don't have such laws where they ride, do you think such a law would be effective?