A method of estimating driver readiness in a vehicle for performing automated driving includes analyzing a bio-signal and a behavior of a driver through collected driver information, determining a bodily sensory usage state of the driver from the behavior of the driver, deriving chances of task candidates that are probable to occur from the driver during driving from the bodily sensory usage state of the driver to infer a task, determining an intention of the driver on the basis of the inferred chances of the task candidates, and calculating driver readiness using the intention of the driver.