The Denver Post published an article on aging drivers and their support for mandatory retesting to renew driver’s licenses. It also states that In Colorado, drivers over the age of 65 must renew their license by mail.
Colorado: Survey Finds Aging Drivers Support Mandatory Retesting to Get License — Colorado (05/25/2011)Source: News
Kentucky: Driver License Information for Seniors — KentuckySource: Association
Caregiverlist.com states that there is no renewal test for seniors in the state of Kentucky. The renewal cycle is every four years and must be done in-person.