The bus factor is a measurement of the risk resulting from information and capabilities not being shared among team members, derived from the phrase "in case they get hit by a bus". It is also known as the bus problem, truck factor,[1] or bus/truck number.[citation needed] The concept is similar to the much older idea of key person risk, but considers the consequences of losing key technical exper
![Bus factor - Wikipedia](https://cdn-ak-scissors.b.st-hatena.com/image/square/03ffe5e51f0f159c9f41d17e79f19c1036f92fbc/height=288;version=1;width=512/https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2F7%2F7e%2FA_bus_waiting_at_a_pedestrian_crossing_in_Lima.jpg%2F1200px-A_bus_waiting_at_a_pedestrian_crossing_in_Lima.jpg)