We do not have any restrictions as standard policy.
Driving restrictions are usually issued in the context of seizure activity. Either the patient has had a documented seizure (and is probably on an anti-epileptic) or the patient has a tumor in a location which has a higher risk for causing seizures such as the medial temporal lobe (and is probably on an anti-epileptic). In cases where patients are told not to drive and continue to drive anyway, we would have to report them to the DMV.