Runway safety−related events represent a potentially significant risk at airports around the world, but not all of the events are easily detectable. While runway excursions and wrong-surface landings are hard to miss, runway incursions may go unnoticed if they do not result in a serious incident or an accident. Still, it’s important to track incursion events so authorities and operators can identify issues and potential hot spots, determine root causes and develop risk-mitigation strategies.