Running a stop sign or red traffic light is to driving as runway incursions are to flying. Each breakdown in situational awareness places lives at risk. Four runway incursions accidents alone have accounted for over 740 fatalities. Being in the wrong place at the wrong time is likely to end in disaster. Understanding clearances from ATC to taxi, hold short, or position and hold helps keep everyone on the same page while limiting the chances of a dangerous runway incursion.