Do you think motorcycles are required to just sit at a light all day long? Some lights these days are only triggered by large metal objects, motorcycles are often not detected. The light will never change if a car or truck doesn't come.

https://legalclarity.org/when-can-motorcycles-legally-run-red-lights/

This article only lists some states, but I know it's legal in Minnesota since 2002, so it's definitely not an exhaustive list.