Many rules of the road that apply to highways and streets also apply to parking lots, such as right of way, speed, traffic control signs, following too closely, proper turn signals and backing.
Wherever traffic intersects in a parking lot and there are no yield or stop signs, it must be treated as an uncontrolled intersection.
For example, when approaching an uncontrolled intersection in a parking lot, you must always yield to the vehicle on the right. This rule applies even if you are travelling on what you believe to be the main roadway of the parking lot.
As well, a driver leaving a parking space must yield to a driver going through the lot.