In Ontario, pavement markings are considered a guidance or advisory system that works in conjunction with regulations identified by signs and traffic signals. They are not an enforceable traffic device on their own.
Painted edge-lines have proven to be successful in reducing operating speeds on residential roadways by visually reducing the travelled width of the roadway making it less comfortable for motorists to increase their operating speeds. It is important to note that these edge-lines are not designated bicycle lanes, do not delineate a pedestrian pathway or on-street parking, nor do they impact the existing parking regulations on the roadway. Motorists are free to track over the lines while navigating the roadway, especially when passing an oncoming vehicle, provided it is safe to do so.
Painting of edge-lines are considered a “soft” traffic calming measure and a relatively inexpensive and effective first step in addressing local residential traffic safety concerns.