Corner Breaker is a window breaker that is set in corner of the bus, which is the part of the vehicle that has the lowest chances of being hit. Its purpose is to help passengers break windows efficiently in an emergency. This is especially useful for the elderly or children who have less strength and Corner Break as a concept can save lives in a less hazardous and more efficient way. By pulling the handle, and then releasing it, the elasticity of the returning spring provides the strength to break the window. To make sure this mechanism is not carelessly used, an alarm sounds whenever the handle is pulled. In this way, breaking windows in an emergency is intuitive, safe and requires less effort.