When you approach an intersection with a red light, but you are making a right turn and there is no other traffic, are you obligated to stop before making your turn? The answer is yes. You are bound by law to stop at all traffic signals and stop signs.
When you come to a four-way stop sign and the driver to your right stops at the same time you do, who has the right-of-way? The rule of thumb is to always yield the right-of-way to the driver to the right.
When you are pulling out of a parking lot and you see other traffic stopped at a stop sign or traffic signal, who has the right-of-way? Even though the car at the stop sign or traffic signal is stopped they have the right-of-way. You are bound by law to treat exiting of a private drive, parking lot, gas station, convenience store, etc., to treat it as a stop sign and yield the right-of-way to other vehicles already in the roadway.